What controls the engine speed?

Question 1: How to control the engine speed of 1 The more friends give, the higher the speed.

2. Upshifting will definitely reduce the speed.

For example, an engine with a speed of 2000 rpm can go from 1 to 100, when the speed reaches 30 km/h, you can change to the second gear at this time, but it can reach the second gear after 80 revolutions at 30 km/h, and the engine speed will naturally decrease without increasing power.)

The output power and torque of each engine are different at different speeds, and the tachometer is to let the driver know the output of the engine.

Question 2: Engine speed control principle Throttle controls throttle, that is, controls intake air. The automobile has an air intake sensor, which makes the point injection device inject oil according to the air intake, and the combination of the two forms a combustible mixture which enters the cylinder. The more combustible mixers there are, the stronger the work is after ignition and the faster the speed is.

The maximum speed is artificial, and the main sensor is the sensor of air intake. When the air intake reaches a certain amount, the point spray device will not spray oil. So the speed will definitely not go up, and the speed will definitely not go up. This is the speed limit of the car.

Question 3: What controls the engine speed is related to the amount of work done per unit time or the effective power of the engine, that is, the effective power of the engine varies with the engine speed. Therefore, when explaining the effective power of the engine, it is necessary to indicate its corresponding speed at the same time. The effective power specified on the nameplate of the engine product and its corresponding rotational speed are called calibrated power and calibrated rotational speed respectively. The working condition of the engine at rated power and rated speed is called rated working condition. Rated power is not the maximum power that the engine can emit, but the maximum use limit of effective power based on the purpose of the engine. The rated power value of the same engine is different for different purposes. Effective torque also varies with engine operating conditions. Therefore, the automobile engine takes the maximum torque it can output and its corresponding speed as the index to evaluate the engine power performance.

Question 4: What controls the engine speed of a car? I wonder what car it is.

Question 5: What is the control of automobile tachometer? It is the schematic diagram of pulse electronic tachometer with capacitor charging and discharging. When the engine is working, the contacts of the distributor are constantly opened and closed, and the opening and closing times are directly proportional to the engine speed, that is, the contacts are opened and closed twice for each revolution of the crankshaft of a four-stroke four-cylinder engine; The contacts of the six-cylinder machine are switched on and off for three times, and the intermittent current is generated by the switching on and off of the contacts. After being shaped by the integrating circuits R 1, R2, C 1, it is sent to the transistor VT 1, thus obtaining a rectangular current with a fixed amplitude (current value) and pulse width (time). This current passes through the milliammeter mA, and when the contacts are closed, the transistor VT/. When the contacts are separated, the base potential of the transistor VT 1 approaches the positive pole of the power supply, and VT 1 changes from off to on. At this time, the charge charged by the capacitor C2 is discharged by the milliammeter, and its discharge loop is the anode of the capacitor C2-transistor vt 1- milliammeter-diode VD2 and then returns to the cathode of C2. The contacts are repeatedly opened and closed, and the above process is repeated. Diode VD2 provides a charging circuit for container C2, and VD 1 provides a discharging circuit for C2. Since the charge and discharge quantity Q of C2 is directly proportional to the capacitor C and the voltage U across the capacitor, that is, Q=CU, the average discharge current in each period (t) is: I = Q/T = Cu/T = CUF, where: F- is the opening and closing frequency of the contact. When the power supply voltage is stable, the charging time constant is R3C3, and C and U are fixed values, the average value I of the current passing through the milliammeter is directly proportional to the opening and closing frequency f of the contact, so the reading of the milliammeter can directly reflect the engine speed.

Question 6: What controls the engine speed? When the energy released by combustion increases, it will rotate faster (under the condition of constant load).

The shock absorber not only regulates the air, but also regulates the amount of combustible mixture entering the engine, that is, when more air enters, more oil enters.

If you try to improve the combustion quality, the speed will increase under the same other conditions, but the problem is that it is not so easy to improve the combustion quality.

Question 7: What controls the engine speed of a car? Throttle opening, air intake and fuel injection computer can all involve speed.

Question 8: How does the electronically controlled engine control the speed of 1? The more friends in the same file give, the higher the speed. 2. Upshifting will definitely reduce the speed (for example, an engine with 2000 rpm can take 1 gear to 100, and the speed will reach 30 km/h at this time. At this time, you can change the second gear, but the second gear can turn 80 times at 30 km/h, and the engine speed will naturally decrease without increasing the power. The power and torque output of each engine are different at different speeds. The tachometer is to let the driver know the output of the engine.

Question 9: How to control the engine speed of automatic transmission car? Ha ha! No matter at (automatic gearbox) or MT (manual gearbox), the engine speed is controlled by directly controlling the accelerator pedal.

Question 10: How to control the engine speed of EFI diesel engine? When stepping on the accelerator, the transmission mechanism compresses the pre-tightening force of the spring on the balance flying hammer inside the governor, and the governor outputs corresponding force to increase the oil quantity. This force then pulls the rack on the high-pressure oil pump through the transmission mechanism, and the rack drives the plunger in the high-pressure oil pump to rotate at an angle. The plunger head is spiral, and the oil supply is different with different plunger angles. When refueling, the sealing surface of the plunger head becomes longer, the fuel injection quantity increases and the rotation speed increases. On the contrary, the speed decreases. No matter how fast the diesel engine rotates, the speed of the piston is zero at the top dead center and bottom dead center. In the whole stroke of the piston, the speed is the highest at the midpoint of the stroke. Generally, the average speed m/s of the piston is used to express the moving speed of the piston. The fuel injection is large, the explosion force during combustion is large, more work is done and the piston moves down quickly.