What is the reason for the release of the clutch after the car starts

1. Ensure a smooth start of the car.

This is the primary function of the clutch. Before the car starts, it is natural to start the engine first.

Whereas, when the car starts, the car accelerates gradually from a completely stationary state. If the drivetrain (which links the entire car) is rigidly connected to the engine, the car will suddenly rush forward as soon as the transmission is engaged, but it will not start. This is because when the car moves from standstill to forward, it generates a large inertial force, which causes a large drag torque to the engine.

Under the action of this inertial drag torque, the engine speed drops sharply to below the minimum stable speed (generally 300-500rpm) in an instantaneous time, and the engine is turned off and cannot work, and of course, the car cannot start.

That's why we need the help of the clutch. After the engine starts, before the car starts, the driver first presses the clutch pedal, disengages the clutch, disengages the engine and the drive train, and then puts the transmission into gear, and then gradually releases the clutch pedal to make the clutch gradually engaged.

In the process of engagement, the drag torque of the engine gradually increases, so the accelerator pedal should be gradually pressed at the same time, that is, the fuel supply to the engine should be gradually increased, so that the speed of the engine is always maintained at the lowest stable speed without stalling. At the same time, because the tightness of the clutch gradually increases, the torque transmitted by the engine to the driving wheel through the drive train gradually increases, and when the traction force is enough to overcome the starting resistance, the car starts to move from standstill and gradually accelerates 2, ensuring that the drive train works smoothly when shifting.

2: Achieve smooth shifting.

In the process of driving, in order to adapt to the changing driving conditions, the drive train often has to change different gears to work. To realize the gear shift of the gear transmission, it is generally to toggle the gear or other gear mechanism, so that a gear pair of the original gear is pushed out of the transmission, and then the gear pair of another gear is put into the work.

Before shifting gears, the clutch pedal must be stepped on, and the power transmission is interrupted, so that the meshing pair of the original gear can be disengaged, and the speed of the meshing part of the new gear meshing pair is gradually synchronized, so that the impact when entering the meshing can be greatly reduced, and a smooth shift can be realized.

3. Prevent overload of the drive train.

When the car is braking urgently, if there is no clutch, the engine will be rigidly connected with the drive train and reduce the speed sharply, so all the moving parts will produce a large moment of inertia (its value may greatly exceed the maximum torque emitted by the engine when working normally), causing more than its bearing capacity to the drive train, and causing damage to the parts. With a clutch, it is possible to rely on the relative movement that may occur between the active and driven parts of the clutch to eliminate this danger.

Therefore, we need a clutch to limit the maximum torque that the drivetrain can withstand and ensure safety.

Reasons for clutch pressure plates Have a mechanic check the clutch pressure plate clutch plates.

The clutch is lifted faster, thank you.

Clause.

1. When the car shifts gears, especially the manual transmission car, when the clutch is half-clutched, the car obviously feels a little faster, which you can feel when traveling in one gear on flat ground, the reason is;

Clause. 2. When the car is half-clutched, in order to prevent the car from stalling, the driving computer will slightly increase the speed of the car, resulting in a slight increase in the speed of the car;

Clause. 3. Your situation is when the clutch is loosened, that is, the range of this situation just occurs, if the phenomenon is not obvious, it is normal; If the phenomenon is violent, it is recommended to go to the car repair shop to overhaul it, see what is wrong with the clutch engine gearbox, and pay attention to the safety of people and vehicles.

Generally, the clutch should be loosened too quickly.

The foot should be clutched to avoid it.

There's nothing that a good bottle of oil can't solve.

The inertia of the car is not good, check whether there is a problem with the wheel bearing, whether there is a problem with the brake system.

When the car starts to step on the clutch, the first clutch can be stepped on, which locks the [manual transmission] model.

Stepping on the clutch is based on the following three reasons:

When the clutch is pressed, the power transmission can be interrupted to prevent the dangerous situation that may occur when the gear is ignited.

Protect car batteries and engine starters. Especially in winter, many car owners know to step on the clutch and then release the clutch after ignition, and they can obviously feel the sound of the engine being more strained. It shows that in neutral mode, the gearbox still has a certain load.

Then, if you do not step on the clutch in neutral gear, the starting load of the starter will increase, the starter current will increase sharply, the instantaneous discharge of the battery is much higher than that when stepping on the clutch start, the battery is easy to lose power, and the service life is reduced; At the same time, the starter is prone to overcurrent when igniting without stepping on the clutch, and the motor may be burned in extreme cases.

Compared with not stepping on the clutch to ignite, the engine starts more interrupted and the starter current is smaller in the previous case. The starter current is generally between 200A and 400A instantaneously, and the current is different for different displacements.

Through the above analysis, I hope that all car owners and netizens can clearly analyze the reasons why manual transmission cars need to step on the clutch even if they are ignition in neutral gears!

Whether the gear is neutral, whether the handbrake is down, whether the brake is clicked; If it is neutral, put the handbrake, do not point the brake, and release the clutch after ignition, the car will definitely go.