When does a car have to press the clutch?

It is best to use the brake when you start, and if you don't use it, the brake will turn off in the end, do you know what the clutch is for? The clutch, as the name suggests, is to play the role of disengaging and closing. That is, it plays a role in the separation of the engine and the wheel transmission device.

That is to say, when you press the clutch, then the transmission of the engine is disconnected from the wheels, and the power of the engine is not transmitted to the wheels to drive the car.

When you release the clutch, the transmission of the engine is connected to the wheels, and the power is transmitted to the wheels, and the car will naturally move.

So why separate the power from the wheels? Because the engine at different speeds has to be shifted, this problem is more complicated, I will ominously elaborate, in short, the transmission device of the engine at different speeds should transmit different speeds to the wheels, and at this time, it is necessary to separate the slow gears from the wheels, and engage the wheels with high-speed gears, and the clutch will be used for this part.

Understand the working principle of the clutch, so let's combine it with reality. When your car is starting, the wheels are stationary, if you want the car to change to a moving state in a stationary state, the thrust required at this time is very large, much greater than when the car is in motion, at this time step on the clutch, hang a gear, and see what happens? When you step on the clutch, that is, you are ready to drive the wheels with gears, hang up the first gear, that is, send the slow gear to the transmission, when you release the clutch, the slow gear will lean on the transmission gear of the wheel, you lift fast, it depends fast, you lift slowly, it depends slowly, then the car starts.

If you lift the clutch very quickly, then the two gears are immediately engaged, because the car is stationary, it needs a lot of thrust, and the power output of the engine is not enough to make the car reach the speed of first gear at once, then the car will suddenly move, and then turn off. As soon as the car moves, it is clear that the power of the engine has been transmitted to the wheels, but because the force to be overcome is greater than the output of the engine, that is, the engine cannot push your car, so the gears are jammed and the engine stalls.

The fuel pedal can increase the power output of the engine, and the slow lifting of the clutch will reduce the drag, so that the engine can overcome the static friction force and make the vehicle start smoothly. When the car moves, the clutch can be slowly and fully lifted, because after the car moves, the dynamic friction force is much smaller than the static friction force when the car is stationary. That's why it's in.

The reason why the clutch can be lifted a little faster in second, third and fourth gears without stalling.

Similarly, it is necessary to increase the throttle when starting on a small slope, and the clutch should be tightened for this reason, because the resistance on the uphill slope is greater than that of the plane.

When the speed is very low, the clutch is shifted to prevent stalling, and the clutch is also stepped on when the speed is low to prevent stalling, and the stop is also stepped on because the gear is changed.

When driving down, you don't need to step on the clutch as long as you don't step on the brakes, but you need to step on the clutch when you step on the brakes at low speeds, otherwise it will stall. To sum up, the clutch is only used in three situations: starting, shifting, and braking at low speeds (so as not to stall).

In general, the speed is reduced without stepping on the clutch. In case of emergency, the clutch brake should be applied at the same time.

1. Step on the clutch before starting: Many drivers are used to stepping on the clutch and brake before starting the car, which is mainly a long-term habit, and it is also to start it will be safer. 2. Prevent accidents:

At present, some models on the market must step on the clutch or brake before starting the car, otherwise the vehicle cannot start normally, so the design is also from a safety point of view to prevent accidents from starting the car without taking off the gear. 3. Reduce the load on the engine: Stepping on the clutch can also reduce the load on the engine and make it easier for the car to ignite.

The footbrake and handbrake linkage are the basis for safe driving.

The clutch needs to be pressed before starting, and it needs to be pressed before shifting, emergency braking, and stopping. The clutch is the transmission mechanism between the engine and the gearbox, and its function is to connect the power transmitted from the engine to the gearbox.

When the clutch is pressed, the power is cut off and the car becomes coasting in neutral gear; When the clutch is released, the power is reconnected, and the car can run forward again.

The main purpose of stepping on the clutch is to shift gears or to maintain the smoothness of the power. When the car starts, the driver slowly lifts the clutch pedal to gradually engage the engine of the clutch with the gearbox, and at the same time, gradually depresses the accelerator pedal to increase the output power of the engine, so that the power of the engine can be transmitted to the gearbox from small to large.

For the sake of safety, it is best to step on the clutch before starting the engine, because this can effectively prevent the car from rushing forward when starting, especially on the ramp, the clutch must be stepped on, otherwise it is easy to cause the car to slip backwards due to lack of power.

In addition, pressing the clutch before starting the engine reduces the load on the battery, the engine and related components. Because if you don't step on the clutch to start, part of the power of the engine will be consumed by the output shaft and other components of the collapse of the combinator, which will increase the load of the starter, and the current of the starter will also increase, and the battery is easy to lose power after a long time.

In addition to the above-mentioned starting engine, the manual transmission car needs to be clutched when starting, shifting, and braking at low speeds.

1. Start: The role of stepping on the clutch at the start is to connect the power output, after stepping on the clutch, the wheels and the engine will be connected by the clutch base, otherwise no matter how big the accelerator is pressed, the clutch will not go without stepping on the car.

2. Gear shifting: When shifting gears, you need to step on the clutch to disconnect the power system, which can reduce the impact during meshing, so as to achieve smooth gear shifting.

3. Short-distance braking: when the speed is low, and the car is not pressed when the accelerator is braked, the engine is easy to stall when the brake is stepped on, and the clutch can be effectively prevented from happening by stepping on the clutch to interrupt the power connection.

The clutch is applied when shifting gears, stopping and starting. The role of the clutch is to start the car smoothly, achieve smooth shifting, and prevent the drive train from overloading.

Make sure the car starts smoothly.

Ensuring a smooth start is the primary function of the clutch. The engine needs to be started before the car can start. The car starts at a complete standstill and accelerates gradually.

If the drivetrain is rigidly connected to the engine, as soon as the transmission is put into gear, the car will suddenly rush forward, but it will not start, and at the same time the engine will stall and will not work, and of course the car will not start.

The function of the clutch is to disengage the engine and drive train before starting, and then put the variable rubber speed on the gear, and then gradually release the clutch pedal, so that the clutch gradually connects to this merge without stalling, as the traction overcomes the friction, the car will start moving from a standstill and gradually accelerate.

2.Achieve smooth gear shifts.

In order to adapt to the changing driving speed of the car, the drive train often has to change different gears to work. Before shifting, 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, so as to achieve a smooth shift.

3.Prevent overload of the drive train.

When the car is braking urgently, the clutch can be used to reduce the load on the drive train and protect the parts.

Extended information] The automobile clutch is located in the flywheel housing between the engine and the variable slip side gearbox, and the clutch assembly is fixed on the rear plane of the flywheel with screws, and the output shaft of the clutch is the input shaft of the gearbox.

Clutches can be divided into: friction clutches, or the use of liquid as the transmission medium (i.e., fluid couplings), or the use of magnetic transmission (i.e., electromagnetic clutches).