Some characteristics of automobile automatic start-stop system

Function of automatic start-stop system

For example, driving in a crowded city, facing red lights and long queues, whether to keep the engine idling or turn off the engine, everyone will make different choices according to the situation at that time.

So people are also struggling: engine idling, one is fuel consumption, the other is emission pollution and thermal effect. However, if the engine is turned off, starting it again will consume the battery power and the life of the starter.

In view of crowded cities, many automobile manufacturers are equipped with automatic start-stop systems.

The origin of automatic start-stop system

The most traditional automatic start-stop system is based on the original car design, but the performance of starter, battery and generator has been enhanced, which can be adjusted and monitored in time.

At the same time, the program of the engine control unit is upgraded, and whether to stop automatically is judged by signals such as clutch pedal sensor, gear switch and brake switch.

Because the starter and generator in this start-stop system are designed separately, it is also called separated starter/generator start-stop system.

Development of automatic start-stop system

Compared with the single starter/generator start-stop system, an integrated starter automatic start-stop system for starting motors is developed, which is called integrated starter/generator start-stop system.

Leo developed the i-Stop-Start system, which was first applied to the e-HDi of PSA (Peugeot Citroen Group). The electronic control device of i-Start system is integrated in the generator. When the engine stops at a red light, the car will automatically start the engine as soon as it shifts gears or releases the brake pedal.

Mazda SISS intelligent start-stop system;

Mazda's SISS intelligent start-stop system (now called i-stop technology) mainly restarts the engine through the expansion force generated by direct fuel injection and fuel combustion in the cylinder. The traditional starter on the engine plays an auxiliary role when the engine starts.

According to official data, with SISS technology, the engine can be started within 0.35s at the earliest, which is twice as fast as the system using only starter or motor.