Do you need to step on the clutch when the car is ignited?

Step on the clutch when the car is ignited. When the car is ignited, one of the biggest functions of stepping on the clutch is that the car can start normally.

If the clutch is not depressed:

First, the engine starts at a low speed, so the driving force cannot be transmitted quickly through the transmission shaft, and the car is easy to stall.

Secondly, if you don't step on the clutch, the engine load will be greater and the battery will output more current. This will not only affect the ignition effect of the engine, but also easily lead to the damage of the engine and battery.

Especially in the cold winter in the north, if you don't step on the clutch, it is difficult to ignite and the engine load increases, which makes the running sound of the car particularly loud. I believe that friends who drive in the north should have noticed that when the temperature reaches below 0 degrees in winter morning or when the ignition is started after snowing, it takes several seconds for the key to be inserted into the keyhole, and sometimes it takes several times to ignite.

Extended data

The working process of the mechanical ignition system is that the crankshaft drives the distributor shaft to rotate, and the cam on the distributor shaft rotates, so that the primary contact of the ignition coil is turned on and off, resulting in high voltage electricity.

This kind of ignition high voltage electricity is sent to the spark plugs of each cylinder in turn through the ignition head on the distributor shaft according to the working requirements of the engine, and the spark plugs emit electric sparks to ignite the gas in the combustion chamber. The distributor housing can be manually rotated to adjust the basic ignition advance angle (that is, the ignition advance angle when idling), and there is also a vacuum advance device to provide different advance angles according to the change of the vacuum degree of the intake pipe.

Electronic ignition system is completely different from mechanical ignition system. It has an electronic control device for ignition, which contains the ignition control MAP required by the engine under various working conditions.

Through a series of sensors, such as engine speed sensor, intake pipe vacuum sensor (engine load sensor), throttle position sensor, crankshaft position sensor, etc. Judge the working state of the engine, find the required ignition advance angle of the engine in this working state on the map, and ignite according to this requirement.

Then, according to the knock sensor signal, the above ignition requirements are corrected to make the engine work at the best ignition time.

Electronic ignition system can also be divided into closed-loop control and open-loop control: the electronic control system with knock sensor that can correct the ignition advance angle in time according to whether the engine knocks is called closed-loop control system; Without the knock sensor, the ignition advance control is only controlled according to the program set in the electronic control unit, which is called an open-loop control system.