Haval H6' s personal view on the increase of engine speed when the clutch is depressed. (repost)

First of all, it is normal that the engine speed slightly rises and changes when the clutch is depressed, because the hydraulic push rod separation mechanism of the clutch is connected to the vacuum booster pump to increase the driving force. Just as the brake hydraulic system depends on the vacuum booster pump, the vacuum booster pump is used to boost the power, and the vacuum tube of the vacuum booster pump relies on the suction connected to the engine throttle to generate the vacuum degree in the pump cavity. When the clutch is depressed, the vacuum pump changes the vacuum degree, increases the vacuum suction on the intake manifold, and slightly increases the mixed gas flow entering the throttle valve, but has little effect on the increase and change of engine speed, just like installing a secondary intake device. If your car is stepping on the clutch, the speed increase is quite obvious, which may be due to the following reasons: 1 You stepped on the accelerator too hard or didn't release the accelerator in advance before stepping on the clutch. When you step on the clutch, the clutch friction plate separates, and the engine instantly gets rid of the drag of the gearbox and the road transmission mechanism, so that the engine speed can be easily increased at the same throttle angle. (Similarly, when the compressor pump of refrigeration and air conditioning is turned on, the engine speed will automatically decrease under the condition of constant throttle, because the engine load increases when the refrigeration compressor works. ) 2. There is a phenomenon that the mechanical cable is stuck and the throttle cable is not lubricated, and then there is carbon deposition on the throttle plate, which leads to poor throttle alignment. 3. There is a motor idling problem, so it is necessary to clean and lubricate the motor shaft or replace the idling motor. 4. There is something wrong with the wiring, and the pin of the throttle position sensor connected to the engine computer is loose. I read what others have published in other forums. Turn around and show the riders! First of all, it is normal that the engine speed slightly rises and changes when the clutch is depressed, because the hydraulic push rod separation mechanism of the clutch is connected to the vacuum booster pump to increase the driving force. Just as the brake hydraulic system depends on the vacuum booster pump, the vacuum booster pump is used to boost the power, and the vacuum tube of the vacuum booster pump relies on the suction connected to the engine throttle to generate the vacuum degree in the pump cavity. When the clutch is depressed, the vacuum pump changes the vacuum degree, increases the vacuum suction on the intake manifold, and slightly increases the mixed gas flow entering the throttle valve, but has little effect on the increase and change of engine speed, just like installing a secondary intake device. If your car is stepping on the clutch, the speed increase is quite obvious, which may be due to the following reasons: 1 You stepped on the accelerator too hard or didn't release the accelerator in advance before stepping on the clutch. When you step on the clutch, the clutch friction plate separates, and the engine instantly gets rid of the drag of the gearbox and the road transmission mechanism, so that the engine speed can be easily increased at the same throttle angle. (Similarly, when the compressor pump of refrigeration and air conditioning is turned on, the engine speed will automatically decrease under the condition of constant throttle, because the engine load increases when the refrigeration compressor works. ) 2. There is a phenomenon that the mechanical cable is stuck and the throttle cable is not lubricated, and then there is carbon deposition on the throttle plate, which leads to poor throttle alignment. 3. There is a motor idling problem, so it is necessary to clean and lubricate the motor shaft or replace the idling motor. 4. There is something wrong with the wiring, and the pin of the throttle position sensor connected to the engine computer is loose. I read what others have published in other forums. Turn around and show the riders! 1.5T clutch replacement is described in the manual. If you don't believe me, you can try this: accelerate the refueling in the second gear, and the vehicle will not feel frustrated because of the oil loss within 3 seconds after the oil loss, and the engine speed will not increase after stepping on the clutch for 3 seconds. In fact, after the throttle is turned off, the instruction obtained by the idle motor is not the normal 800 rpm instruction. It is similar to the command of vehicle cold start: 1600 or so, 1~2 seconds, so the water temperature is normal, 1 100 rpm 1 sec, and it returns to 800 rpm in 0.5 seconds. This is a flaw in the ECU programming of this car owner control computer. Thank you! Yes, I understand that it depends on whether the car has a clutch switch, and this kind of combination of "inappropriate position of electronic throttle clutch switch" is prone to this phenomenon. The explanation is in place! @20 19