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Stepper motor

What is a stepper motor?

The stepper is an important part of the car engine that is installed on the gas valve of the car. When the gas pedal is not pressed, the stepper, which is a mechanical electronic part, is responsible for regulating the amount of air entering the gas valve and also keeping the car on. The stepper, together with the throttle sensor, by receiving and sending information to the ECU, prevents the car from shutting down at low engine speeds.

Due to the presence of this part in the inlet part of the gas valve, there is a possibility of getting it dirty with suspended particles and oil soot. Contamination of the stepper causes its malfunction and it is necessary to clean this part so as not to cause serious damage to the engine.

Stepper motor components

This part, like any other electronic part, is made up of various components, the coordination of each of these parts together makes this part work flawlessly. Among the most important components of the stepper motor, we can mention the electric motor, holding spring, separating bush, stepper shaft and cap.

How the stepper motor works

As mentioned, this part is installed on the throttle and is controlled by the car’s computer or ECU. The stepper controls the amount of air intake by moving forward and backward, which is controlled by 4 transistors.

By receiving the engine temperature and other vehicle conditions, the ECU sends the necessary command to the transistors, and as a result, the stepper valve opens and closes. In fact, as the engine temperature increases, its valve opens and after the engine temperature decreases and reaches normal, the valve is closed again. Also, if the gas pedal is not pressed, due to the engine’s need for air, the valve will open to supply the air required by the engine.

The most important task of this part is to keep the car running at low speeds; But the stepper has other duties, which we will discuss further among the tasks of the car stepper motor, the following can be mentioned:

  •  When the engine is cold, the stepper plays the role of throttle; That is, when the engine is cold, by adjusting the needle, the car starts with the first start.
  • This part adjusts the engine speed when taking an extra load; For example, when you turn on the air conditioner in hot weather, you are actually imposing an additional load on the engine; At this time, the engine speed must be increased to respond to this additional load, which is the responsibility of the stepper.
  • Another function of the stopper is to regulate fuel and air at low revs. The meaning of low revolutions in the car is usually between 900 and 1100 revolutions per minute. When the car is parked and the car engine is working normally, fuel and air intake adjustment is done by the stepper.
  • When changing gears, this part adjusts the speed of the car. When the driver takes his foot off the gas pedal during a gear shift, the stepper adjusts the speed by preventing the air path from closing too quickly. It is worth noting that this issue also occurs when the driver suddenly takes his foot off the brake pedal.

Symptoms of stepper motor failure

Now it’s time to look at the symptoms of stepper failure. The most important task of the stepper is to prevent the car from turning off at low speeds; In other words, the engine speed at low revs is regulated by this part; Therefore, its failure can be detected at low speeds, and often when the engine is running, the engine speed is not stable and changes constantly. Diagnosing stepper motor failure is accompanied by other symptoms, which we will mention below:

  • Increasing the engine speed immediately after starting the car
  • Turning off the car by releasing the gas pedal
  • Reducing the engine speed in additional loads such as turning on the cooler
  • Unstable engine speed while working
  • Car gassing for no reason after starting the car
  • Increasing engine speed with increasing engine temperature

All the signs of stepper motor failure are related to the way the stepper itself works; Because its valve does not open and close properly and as a result, the amount of air entering the engine is disturbed and the above cases will appear.

Washing the stepper motor

Some of the symptoms mentioned above are caused by dirty stepper parts, which you can clean without going to a mechanic. Next, we will mention how to wash the stepper motor.

  • Turn off the vehicle and allow the engine to cool down sufficiently.
  • Identify the location of the stepper. For this, get help from the car guide.
  • Unscrew the relevant screws and disconnect the wires and other connections from the motor.
  • Wash the stepper piece carefully. For this, you can use diesel or injector spray.
  • Dry it using compressed air.
  • Check the stepper valve and make sure it is closed.
  • Put it back in place, connect the wires and tighten the screws.
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Sensors

A sensor means a sensor, and it is derived from the word sens, which means sensing, and it can convert quantities such as pressure, heat, humidity, temperature, etc. into continuous (analog) or non-continuous (digital) electrical quantities. Sensors are used in various measuring devices, analog and digital control systems such as PLC. The performance of sensors and their ability to connect to various devices, including PLC, has made the sensor an integral part of the automatic control device. Sensors send information to the controller system based on the type and task defined for them, and the system operates according to the defined program.

Sensors are devices that measure the physical inputs of the environment and convert them into data to be interpreted by humans or machines and used in our daily life and various devices we work with. In this article, we have examined the types of car sensors and the duties of each.

Only in an average car, there are dozens of different types of sensors. For example, tire pressure sensors are for whether the tire needs more air or not.

There are also self-driving cars, such as Tesla’s products, which are equipped with ultrasonic sensors and use sound waves to measure the distance between the vehicle and other vehicles or other objects in the environment and inform the driver.

What is a sensor?

Sensors are devices that measure the physical inputs of the environment and convert them into data to be interpreted by humans or machines and used in our daily life and various devices that we face.

Due to the electronicization of all types of equipment and devices that we use, most of the sensors are electronic, but some are simpler, such as thermometers. Sensors are used to measure temperature, distance, smoke detection, pressure regulation, etc.

There are two types of electrical sensors :

  1. analogue
  2. Digital

Analog sensors convert physical data into analog signals and they never change suddenly and the changes are continuous.

In general, existing signals are inherently and naturally analog, and its digital type is man-made. Also, due to being continuous, analog sensors are much more accurate than digital sensors, which are limited to a limited set of possible values.

So, considering that analog signals are continuous, they can account for and record the smallest physical change in temperature, pressure, etc. But in digital signals, due to the fact that they follow the general trend of changes, they are limited to fixed data (one and zero).

What is a car sensor?

A car sensor or sensors in a car is an electronic device that controls a car from various aspects and sends information to the driver or ECU as an electronic control unit. According to the type of sensor and the type of data it sends, ECU-ECU automatically receives the settings of a specific part based on the information received from the corresponding sensor and sends the command.

In a modern car, sensors are present and used everywhere, from the engine to small electrical components. Sensors constantly monitor various aspects of the car from the moment the engine is turned on, and in fact, the sensors send signals to the ECU to make the best adjustments or to warn the driver what part or problem is in the car.

There is

Human sensory organs such as eyes, nose, mouth, tongue and hands are the best examples for understanding the function of sensors that sense things and give us the necessary warning. For example, when we touch a hot object, they send signals to the brain, and then the brain decides to separate the hand from the hot object in any way possible.

Sensors can cover and control different aspects of the car, these include:

temperature sensor, thermometer

Cooling system sensor

Engine sensor

Oil pressure sensors

Vehicle speed sensors

How does the car sensor work?

Considering that there are many sensors in a car that monitor various systems and the performance of their components, knowing the work of a sensor is not without grace and gives you a broad idea of ​​the performance of car sensors.

It is true that the function of car sensors is much wider than it is thought, however, the basic functions of the sensors are the same. That is, it sends the information related to the system that each sensor tracks to the ECU, then the data is adjusted through predefined algorithms based on the ECU. This is when an ECU cannot make the necessary changes and perform its task, so to speak, sending a warning to the driver.

Types of car sensors

Compared to the cars of a few decades ago, today’s modern cars have become a complex machine, so that a modern car today consists of many electrical components, because mechanical parts are being replaced by electronic equipment or That they are designed and made to help electronic devices.

In a way, in today’s era, sensors are considered one of the vital electrical components of the car. In the following, we will examine the types of sensors in the car and their different functions, which include:

  • Air flow and oxygen sensor
  • Engine knock sensor or Engine knock sensor
  • Engine speed sensor
  • Manifold Absolute Pressure (MAP) sensor
  • Throttle position sensor or gas pedal sensor
  • Vehicle voltage sensor and its function
  • NOx sensor
  • Fuel and water temperature sensor
  • Speed ​​sensor in the car and its function
  • Parking sensor or car parking warning sensor
  • Rain sensor

Air flow and oxygen sensor

To control and measure the density and volume of the air entering the combustion chamber, the air flow sensor and the oxygen sensor are also used for the exhaust gases.

The lack of proper combination of oxygen and fuel in the combustion chamber and their combination causes the combustion to not be done properly and leads to subsequent problems such as air pollution due to excess fuel or increased fuel consumption. The oxygen sensor also measures the amount of oxygen in the exhaust gases. This sensor is near the exhaust manifold and after the catalytic converter.

This sensor checks to determine that the engine is using the right amount of fuel with the right combination of air and rich fuel and detects additional substances such as fat and… in it.

The causes of oxygen sensor failure are:

  • Candle failure
  • Accident and hitting the car
  • Poor quality fuel

Engine knock sensor or Engine knock sensor 

The engine knock sensor controls the engine knock caused by the correct mixture of air and fuel so that it ignites properly and the engine works. If abnormal knocks are made during ignition, the sensor sends a warning to the ecu.

If this sensor does not work properly and there is an engine shock, it will reduce the engine efficiency, which will lead to damage to the engine components in the long run.

Engine speed sensor

The engine speed sensor or crankshaft sensor, which is abbreviated as ess or Engine speed sensor, controls the speed of rotation and the position of the crankshaft. In injection cars, the engine speed sensor is installed on the flywheel, which sends frequencies to the ECU, and the engine speed is adjusted based on the conditions of the car.

Symptoms of failure of engine speed sensor or crankshaft sensor also include:

  • It shows wrong engine speed.
  • The fuel pump does not work properly when starting.
  • In case of breakdown, the car starts but does not turn on.
  • The odometer does not work properly or does not go higher than a number.

Manifold Absolute Pressure (MAP sensor

The Manifold Absolute Pressure (MAP) sensor monitors the engine load by measuring the difference between the manifold pressure and the external pressure. The fuel injection inside the cylinders is also adjusted based on this change in pressure, and in the event of a failure of the manifold pressure sensor (MAP), the ECU will not correctly detect the amount of incoming air, and the combination of fuel and air will also be done correctly. not done and combustion will not be done well.

Throttle position sensor or gas pedal sensor

The gas valve position sensor or gas pedal sensor, which is also called the pedal angle sensor, controls the gas valve. That is, according to the information received from the ECU, the gas pedal is pressed by the driver, the angle of the valve is changed, and by increasing and decreasing the air entering the engine, the right fuel mixture enters the cylinder and the car engine starts moving.

Vehicle voltage sensor

The voltage sensor is one of the types of sensors used in cars, and the main task of this sensor is to manage the speed of the car and ensure the increase and decrease of speed if needed. In a way, the function of the voltage sensor in the car is to increase or decrease the capacity of the engine.

NOx sensor

This sensor is the same as the oxygen sensor in the exhaust and gas outlet of the car, which measures the dangerous gases in the exhaust outlet and gives the necessary warning.

Fuel and water temperature sensor

The water temperature sensor is a resistance sensor that is connected to the ECU and amp to send a signal. In this case, if the car’s computer detects that the temperature is high and is harmful to the engine, it will turn on the fan and thereby control the engine temperature.

The fuel temperature sensor also controls the temperature of the fuel entering the engine. This means that the amount of fuel injected is sufficient or not. When the temperature is low, the fuel will burn slowly, and when the temperature is high, the speed of the fuel will increase, and the sensor will send these things to the ECU.

Speed ​​sensor in the car and its function

The speed sensor in the car controls the speed of the car by measuring the speed of the wheels or tires. The speed sensor is responsible for optimizing the acceleration of the car, fixing the idle speed of the engine and reducing the oscillations of the car engine.

Among the symptoms of Speed ​​sensor failures, the following can be mentioned, which are:

  • When braking, the car seems to shut down.
  • Your odometer and its hand will not exceed one limit.
  • Ripping the car

Parking sensor or car parking warning sensor

The parking sensor or the car parking warning sensor detects and gives an alarm for any obstacle in front or back of the car when it is parked.

Rain sensor

The rain sensor is installed on the windshield and detects rain and sends a signal to the ECU to activate the wipers.

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Window Lifter Key

Window lifter key

With the progress of the automotive industry, many parts of today’s cars have changed from manual to electric. The window switch is one of the most important parts of the passenger’s comfort in the car. Today, no car is produced with a manual or manual window. Due to its widespread use. This option in the car, big companies improve it in different ways every day. So that nowadays the car glass is used as a display. The car window switch can be installed in different parts according to the car model and its overall design. For example, some cars are designed in such a way that there are window lifter keys on all four of their doors. At the same time, modern cars with a special design are offered to the market. These cars are designed in such a way that the driver can access one key and raise and lower all the windows. In addition, in some cars, we also see that the window lifter key for the rear windows is installed between the two front seats.

Signs of failure of the car window switch

When the car’s power window switch fails, it will show symptoms. For example, sometimes one of the keys is not able to raise and lower the glass properly. In addition, if the driver’s automatic key also fails, it may not be possible to raise and lower all the windows. Sometimes the child lock does not work and you see problems in this field.

In the meantime, you should know that there are various reasons that will cause the failure of this functional part. For example, sometimes people hit the power window buttons unintentionally. Then you will see that these parts cannot perform the desired process well. In addition, excessive use of low-quality keys will make you need to replace them in a short period of time. Sometimes the broken keys are also considered as one of the reasons that will cause the failure of this part.

There are various other reasons that cause disruption in the working process of the window lifter keys. However, sometimes the raising and lowering of the car windows may originate from the internal systems of the car. It is better to check other parts first before starting to replace the window switch. If you do not have expertise in this field, you can get help from an experienced person.

Using car window booster

Sometimes boosters can be used to increase the speed of the window lifter. This mechanism is built so that the driver can use an amplifier. Reinforcing the glass by using two relays and using positive and negative wires allows you to make the window lifter motors more powerful. We have come to the conclusion that the use of this solution can be effective to a large extent. However, don’t forget that it is important to use a fuse in this situation.

You may have a question about when you will need to use a booster for the car lift system? When the electric wires of the glass become weak and cannot perform properly due to wear and tear, you can use this mechanism. Spotting the platinums also causes the amplifier to be used.

Sometimes the window lifter key is weak or the type of key you want is not available in the market. For this reason, you can take help from this mechanism. Don’t forget that by using this system, you can avoid buying a high-priced window lifter key.

Functions of the window lifter key in new car options

With the addition of various options to the car, the power window switch has taken on a more colorful role and in the form of a complete electrical system, it has taken control of all parts of the door.
The different parts that the power window switch controls are as follows.

  • Control the door glass to move up or down
  • The possibility of automatic movement of the windows up or down
  • Central door lock control
  • Side electric mirror control and mirror heater
  • Door lights control
  • Electric folding mirror control
  • Open the trunk door
  • Connection of memory seat buttons

The mentioned items are only the typical tasks that a power window is responsible for and it changes depending on the type of car and the options.

Types of window lifter keys

In terms of operation and design, lifting glass keys are classified into two general types:

  • Electronic window switch or power window
  • Simple lift glass key

Electronic window switch or power window

The word “power window” is the Latin name of the electronic power window keys and it is different from the power window part that is used in the market to automatically raise the windows when the doors are locked. added at the time of locking the doors. But the manufacturers believe that the automatic raising of the windows can pose a danger to human life, especially children.

This new generation window lifter switch uses a very weak current to command the control unit. The control unit provides the power required by the window lifter motor by means of relays or high current drivers. In some cases, these relays and the electric drivers are located on the lifter window key set itself, and the information is transmitted to other doors using only two thin wires. Multiplex technology is used in some of these types of lifter window keys, and in others, point transmission is used. To the point. But the thing that sets this key apart from simple keys is the use of thinner wires to connect the doors.

Simple car window lifter key

In the past and in simpler cars, a normal window control key was used to move the car windows. The structure of this key is such that it consists of two double-sided platinum mechanisms together and a plastic button to control the car windows. used. In this switch, the platinums are always connected to the two output pins towards the lift window motor. When no force is applied to the lift window button, these two platinums are connected to the other two platinums which are negative, and this causes It is always negative at both ends of the lift glass motor. One of these platinums moves downwards with the movement of the lift glass button, and this time the main plate is connected to the positive plate and one of the legs of the lift glass motor becomes positive. By releasing the button The lifting glass pair of plates become negative again. But the second platinum moves when the lifting glass button is raised and connects to the positive plate. And this time the other base of the lifting glass motor becomes positive. Connecting and disconnecting these plates should be made of metal with low electrical resistance and resistant to corrosion and tarnishing.

 

 

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PCB Board

 PCB board

PCB boards  are made  to speed up the manufacturing  of electronic boards . In the past, parts were used in a box and using a large number of wires to connect them, which caused many problems in electronic devices. Today, with the progress of the electronics industry, the need was felt to have a non-conductive plate on which electronic components such as capacitors and ICs can be placed and electronic connections can be established between them. Therefore,  printed circuit boards  with these features were designed and produced.

Before the pcb board came into existence , the parts were placed in a box and their bases were connected by wires. The communication paths between the bases of electronic components were long and many copper wires were used to connect the bases of the components to each other. This type of construction brought many failures, for example, the loss of the insulation of the wires due to rotting led to the failure of the device. Also, this work caused uncertainty in the circuit and increased complexity in the circuit. With the passage of time and the advancement of pcb board technology, it came into existence, which caused solder to be used instead of many wires to connect the parts.

PCB stands for printed circuit board. The printed circuit board consists of a non-conductive board that is covered by a surface of copper, which is used instead of wires for communication between the electronic components of the circuit.

Electronic components such as capacitors, resistors, ICs are installed on PCB and used in electronic equipment, this process is called electrical board assembly.

The role of electronic boards (PCB) in the car

Parts such as car sensors, GPS positioning system, lighting system, door switch modules, engine control section, audio system are all part of the main components of a car that deal with electronics and electronic circuits. Therefore, their functional mechanism depends on the use and design of electronic boards (PCB). PCB in the car has reached significant developments such as the following.

  • Improving the performance and efficiency of the fuel system
  • Reliable safety and security system that reduces traffic accidents. Electronic boards are abundantly found in systems such as airbag protection system, monitoring, cameras, obstacle detection sensors, etc.
  • The evolution of strategic and environmentally friendly programs has led to the production of electric and self-driving (driverless) cars

Different types of boards (PCB) in the car

Boards with high strength: (Rigid Board):  These boards are made of solid laminates such as FR4, Rogers, etc. You can see such boards in the car in the displays and rear camera.

Flexible boards (Flex Circuit):  These types of circuits have a flexible structure for installing electronic components used on them. These boards can be bent and twisted, so they will be suitable for corners and curved places. This type is also used in the car for display and broadcasting system.

Boards (Rigid-Flex) : Rigid-Flex boards give the ability to have the two features mentioned above in one board. For example, it will be useful in the lighting system.

PCB boards for LED :  In today’s modern cars, high-power LEDs, of course, need bright boards and PCBs that have a high heat exchange. A metal structure such as aluminum is used in these boards. Examples of these boards are used in brake lights, headlights and turn signals.

Boards with a lot of copper  the inner and outer layers of these boards contain 3 ounces or more of copper. These hand boards are used in vehicle safety systems and sending signals.

Key points in PCB design with automotive applications

The PCB designed by you must comply with the relevant standards in order to have acceptable quality and accuracy. Undoubtedly, following the exact process in accordance with the standard and key points of PCB design will prevent serious problems during the production and operation of the board. Therefore, be sure to include the following important points in your design.

1- Direction and placement of parts 

The position and placement of parts on the board has a significant impact on the reliability, production and performance of the board. Therefore, it is necessary to follow the procedure below.

  • Place similar pieces in the same direction. This will make routing and assembling parts easier.
  • For wave soldering, the parts must be created parallel to the wave. This prevents the connection from opening and not soldering properly.
  • Do not forget the proper distance between the inductors on the board.
  • To avoid crosstalk, place the inductors at right angles to each other.
  • Arrange your largest and most important pieces first.
  • Separate analog and digital parts in different parts of the board.
  • Avoid placing and arranging long components such as electrolytic capacitors in the vicinity of smaller and shorter capacitors. This prevents the soldering from becoming defective and loosening.
  • Place parts that consume more power as far as possible from other parts. This will cause more thermal damping from the board.

2- Management of arrangement of parts to avoid coupling 

Unprincipled arrangement can affect the magnetic coupling and may cause mutual inductance. The following rules can be used to prevent these effects.

  • Avoid placing leads close to each other.
  • Place the return flow path close to the main flow path with minimum radiation. By doing this, the current loop path can be reduced.

3- Routing of signal paths in car PCBs

Use 2 to 4 vias per layer to connect layers that have a high current. This will increase reliability, reduce resistance and induction losses, and improve heat exchange. You can use the following rules for routing signals.

  • Place the power and GND planes in the inner layers.
  • Protect sensitive signals from noise sources with a plan and ensure impedance control for the transmission line.
  • Use the shortest and smoothest cracks as possible.
  • Use the path of cracks in two-layer boards on one side vertically and on the other side horizontally.
  • Use the vertical and horizontal paths mentioned earlier alternately for laminated boards.

4- Optimum heat management

Use proper thermal management techniques for heat dissipation for components that absorb more than 10mV or conduct more than 10mA. The following points can be used for better temperature control.

  • Choose copper planes and signal vias as thermal paths to increase heat exchange.
  • Place the signal vias near the component with surface pins or under SMD components.
  • Use a heat sink for high power components.
  • Place thermal copper pads under the hot parts of the board.
  • Vaya can be used to transfer heat from thermal surface pads to the ground.

5- Repeated review of design rules

Use the Design Rule Check or DRC to find errors in your design that may not meet your requirements. These can include the following.

  • Check proper component spacing for the entire circuit and PCB and individual layers.
  • Leave a gap between the power supply and the ground wires and plenty of space between the ground tracks.
  • Check for proper ground connection for digital and analog side circuits.
  • Make the layout connections in the schematic and PCB correctly.
  • Check signal integrity, power integrity, electromagnetic interference and safety requirements.

6- Car design standards

A compact PCB helps to implement information systems, communication, safety, driver assistance systems, engine, etc. As automotive technology continues to advance and move toward driverless cars, the complexity of automotive PCB design also increases. Therefore, for a basic and durable design for electronic boards of cars, follow the standards of IATF 16949, AEC-Q100 and ASE J3016_201401.

7- Grounding the pad of THD parts

The installation holes must be covered and ground. Poor impedance of various circuits is one of the problems. This is mainly due to different electronic components and their connections. Therefore, the following points can be used for the design of electronic boards (PCB) in the car.

  • Place the inductance pieces in the sensitive areas near the through holes.
  • Use suitable filters that depend on the passing holes.
  • Use thinner copper on layers. This reduces the effect of parasitic inductance through the hole on the PCB.
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Rira Project(K125)

Rira technical specifications

This product has an EF7P TC engine, which is a 1.7-liter turbocharged engine and is considered the newest engine of Iran Khodro and the most powerful domestically produced engine; In addition, this product will be equipped with a new generation six-speed automatic transmission (6AT) with an electronic gear shift lever.

The maximum power of the Rira engine is 160 horsepower with a maximum torque of 240 Nm, and the power transmission system of this car is six-speed automatic and has optimal fuel consumption in this class. Currently, the engine and gearbox of this car are going through the final stages of calibration. Rira is a segment B crossover, which is considered the most popular group of crossovers. This car has length, width and height equal to 4334, 1808 and 1638 mm and the distance between its two axles is 2590 mm.

Rira has electric parking brake (EPB), automatic brake system (Auto Hold), hill start assist system (HSA), hill start assist system (HDA), electronic stability control (ESC), traction control (TCS), brake system Anti-lock brakes (ABS) and electronic brake force distribution (EBD), front and rear disc brakes, brake assist system (BAS). This product also has an electric steering wheel with the ability to adjust the column in four directions and control keys on the steering wheel. Dual display (12-inch digital amp display and multimedia system with 12-inch smart touch screen with 9 speakers), hidden lighting with the ability to change color in the interior trim, sunroof, cruise control, speed limiter, light and rain sensor, entry without The key, 12V power outlet in the trunk, foot sensor to open the trunk (Kick sensor), electric trunk door, electronic gear shift lever, 360 degree vision camera and blind spot radar are other features of this product.

One of Ray Ra’s interesting points is the Cornering Lights or Turn Light, which turns on another light when the steering wheel is turned and makes the road ahead brighter for the driver. In addition, Ray Ra has a welcome light under the front doors and the Follow system. Me Home is the light in the parking lot when locking. With the changes made on Ray’s engine, in addition to reducing fuel consumption, power and torque have increased, he said: The engine of this product was produced based on internal knowledge and designed by Ipco, and it can be said that it is one of Ray’s strengths. , is its driving force. Also, one of the attractive features of Ray Ra is the 18-inch two-tone rims, which are used for the first time in Iran Khodro products. These tires, in addition to the sporty appearance that is suitable for crossover cars, are suitable for road conditions. It is also Iran.

Rira is a car that has the largest volume of changes in the direction of development in the history of the country’s car industry. This product has all the automotive tests in its development process, because it is a reborn product with a new platform, parts and equipment, on this product until the commercialization stage, about 200 tests, including tests with requirements Legal and industrial, will be done. The most equipped electrical and electronic features have been used in Ray’s car. Jetco company, which is one of the valuable knowledge-based companies in the field of electrical and automotive electronics in Iran, was responsible for the design and development of the computer control system for automotive electrical and electronic devices (BCM), which was done for the first time in the history of the Iranian automotive industry. Is. For the production of this car, the world’s most advanced technologies have been used, and in the field of safety and security, this car has passed numerous tests and has many standards in this field.

Rira Iran Khodro uses the most powerful engine of this company, namely the EFP engine or the EF7 plus turbo engine, which was previously installed on the Dena Plus of the Youth. This 16-valve engine can deliver 160 horsepower and 240 Nm to the front wheels with an AT6 automatic transmission. In addition, gear shifting is done electronically and there is no physical mechanism for the gear lever in this car.

Rira’s acceleration is equal to 10.4 seconds and its maximum speed reaches about 195 km/h, which is an acceptable number for this 1425 kg crossover. The Rira tank volume is equal to 50 liters and its combined consumption is about 7.3 liters per 100 km.

Body design specifications

The design style of Iran Khodro Rira is a relatively modern design style, which is mostly used in Chinese and Korean cars. In the front view, the daytime running lights are in the form of strips on the top, and the main lights are placed in the bumper, and the large front window of this car is placed between the main lights. The use of splitter is one of the efforts of the designers of this car to create a new face in this car. There are two design lines on the Rira hood that help make this car look sporty.

In Rira’s side views, the design language is simpler than the rest. There is a design line in this view that starts from the front bumper and ends at the rear bumper. The use of 18-inch aluminum rims, roof rack or decorative bar, two-color trim are among the features that can be seen in this view. In the rear view, but like the design of the front part, I don’t see a bold design. The headlights of this car have a good design and relatively beautiful. Also, the use of two-color trim is felt more in this view. The use of chrome-colored exhaust outlets inside the bumper has also added to the attractiveness of Iran Khodro Rira. In general, in the design of the k125 project, we see a new and different design compared to domestic cars, which can be said that the design style of domestic cars has progressed to some extent.

Cabin design and facilities

The design style of Iran Khodro’s national crossover, like the design of the car body, is a relatively modern design compared to other domestic products. Upon entering the cabin of Iran Khodro Rira, what attracts attention is the connected screens of this car. In this section, two 12-inch screens are used, one of which is used as a digital cluster and the other as a touch screen of the multimedia system. The steering wheel of this car is of die-cut type and the access keys are installed on it. Also, the steering wheel of this car can be adjusted in 4 directions, which is considered a good feature for this car.

The design of Iran Khodro Rira’s dashboard is a good and unique design compared to other domestic products. On the dashboard part of this car, a soft fabric is used, which gives the feeling of luxury to the passengers. In the middle of the dashboard, there is a chrome strip that runs across the dashboard. The Rira control switch section is placed under the central ventilation valve and the ventilation system panel is also installed in its lower part.

The middle console section of this car has a somewhat different design style. The start key of this car is placed next to the pilot gear handle of this car, and below it are the keys to access facilities such as activating or deactivating the downhill traffic control system. The use of electric parking brake and auto hold are among the other features that are available in this car, which is not a strange option considering that this car holds the title of the most fully optioned Iranian car. The seats in the front row of Iran Khodro’s national crossover are electrically adjustable and their top is made of leather and fabric.

RIRA Pedestrian Protection Standard

Iran Khodro’s Rira product succeeded in receiving the ECE R127 pedestrian safety standard in the prestigious European test centers. This success is a sign of Iran Khodro’s attention to the development of competitive products with the latest standards of the world in order to have more chances for success while selling in the country’s market. in export markets. Rira, like Tara, has received this safety standard due to its design compliance with the world standards, which is a big development in the field of design and development of new, high-quality and standard products in the Iran Khodro industrial group.

Due to the advanced design and in accordance with today’s standards, the Rira car will pass the 85 standards well. The current products of Iran Khodro Industrial Group, including Soren, Peugeot 207, Rana and Dena, have also succeeded in receiving the pedestrian protection standard by applying changes, and the standard upgrade of this number of products within the last one year is a historical record in the country’s automobile industry and shows It is the effort of this company to produce products with higher safety than in the past and today’s standard.

Features and options of Rira Iran Khodro

According to the latest available news, Rira will be offered in three different types; EF7PTC engine is considered for all three types. This engine is actually the plus and advanced EF7 turbocharged version, which has 160 horsepower and 245 Nm of torque. For basic to full models, 6-speed manual, 6-speed automatic gearboxes similar to Tara and Dena Plus Turbo automatic gearboxes are used, respectively.

Features and equipment of the base version of Rira include electric parking brake, ESP electronic stability control system, TCS traction control and BAS auxiliary brake, light and rain sensor, rear sensor, front and rear disc brakes, front and side airbags, start assist system Uphill movement and downhill speed control, TPMS tire pressure control system, 12-volt power outlet in the cargo area, air vents for rear passengers, automatic ventilation system, 6 speakers including 2 tweeters, 10-inch touch screen, electric steering wheel, keyless starter. , sunroof, leather and fabric seats, electric side mirrors and digital display behind the steering wheel.

In addition to the mentioned features, the full version includes items such as internal electrochromic mirror, front sensor, curtain airbags, blind spot warning, electric folding mirrors, heated and cooled front seats, two-tone aluminum rims, welcome lights, panoramic sunroof and full leather seats. 

The first Iranian car with a smart mirror

According to the latest information available in Rira’s car equipment list, this new product of Iran Khodro is the first Iranian car with “smart mirror”. This news was informed by Shafaq Dana, the manufacturer of Rira mirror, and for this reason, during the 17th auto parts exhibition, which was held in November 1401, it also unveiled the first version of the Rira smart mirror.

Rira’s smart mirror is electrically adjustable and its armrests are also electric, but its most important feature is the installation of a side camera under the mirror, which allows the driver to get a 360-degree view of Rira’s surroundings with the help of the front and rear cameras of the car. to view In its most complete version, the Rira car is also equipped with a blind spot radar or BSD option, whose warning indicator is also installed on this smart mirror.

The reason for naming Rira Iran Khodro

The CEO of Iran Khodro finally announced the K125 crossover brand at the end of June; This new product is going to enter the market of our country under the name of “Rira Iran Khodro”. But what is the meaning of “Rira”?

In the Mazandarani language, Rira or Rira has many meanings, one of the most important of which is “rain”. In addition, in the Mazni language, Rira is also the name of “a bird smaller than a sparrow and fast-flying”. Therefore, it can be considered a symbol of life, greenery, beauty and speed.

After setting up the paint line and completing the press line, a large part of the Rira car is produced at the site of Iran Khodro Mazandaran (Babol), and for this reason, its name is rooted in the culture and literature of the northern region of our country (the birthplace of this car). Also, Rira’s name, which will be engraved in Persian on this new product, is the name of one of Nimayoshij’s works.

After products such as Rana, Dena and Tara, now “Rera” is the fourth product of Iran Khodro that has phonetic similarity with its other brothers.