How does automatic wave drive?

Automatic wave automobile generally has the following gears: P (parking), R (reverse gear), N (neutral gear), D (forward gear), 3rd and 2nd speed gears and L (or 1) 1 constant speed gear. The correct use of these gears is very important for people who drive automatic cars. The main points are as follows:

Point 1: When parking, be sure to use P gear.

When the vehicle needs stationary parking, the selector lever of the automatic transmission must be set to the P position, so that the output shaft can be locked by the parking brake device inside the transmission, and the hand brake is tightened to prevent the vehicle from moving. Don't expect to park with the handbrake, otherwise it is easy to cause taxi collision when parking, especially in the case of uneven ground.

Point 2: Use R (reverse gear) and pay attention to the accelerator.

R is reverse gear. Engineer Chen said that because automatic cars can't slide in a semi-linkage way like manual cars, special attention should be paid to the control of the accelerator (accelerator pedal) when reversing. If you don't pay attention, it will be very easy to reverse too fast.

Point 3: gear N (empty) should be hung, and it can't be hung indiscriminately.

According to reports, the N-gear is equivalent to the neutral gear of the familiar manual gear car, which is generally used in auto start or trailer. Some drivers often try to save trouble when driving a automatic wave car and waiting for a signal or in traffic jams, thinking that this is the advantage of using a automatic wave car. Engineer Chen said that keeping the gear in the D position and stepping on the brake at the same time is harmful to the parts of the automatic wave-blocking car. The correct operation method should be to put the automatic gear into N gear after stepping on the brake, then tighten the hand brake and finally release the foot brake. Because if you keep the gear in the D gear, even if the car has braked, there will still be a weak forward driving trend of the automatic wave car. Holding down the brake for a long time is equivalent to forcibly stopping this trend, which will increase the oil temperature of the automobile transmission and make the oil easy to deteriorate. Especially when the air conditioner is working and the engine idle speed is high, it is even more unfavorable.

On the contrary, in order to save fuel, some drivers turn automatic wave's shift lever to N-speed or slide downhill, which is also easy to burn out the transmission. Never operate a automatic wave car like this. At this time, the output shaft of the transmission rotates at high speed, while the engine runs at idle speed, the oil supply of the oil pump is insufficient, and the lubrication condition deteriorates, which is easy to burn the transmission.

Fourth point: Proper use of D (forward) gear can reduce noise.

Driving an automatic wave-blocking car is not as simple as hanging a D gear. According to Chen Hezhang, when driving normally, the car can automatically shift gears between 1~4 (or 3) when the shift lever is set to D .. D position is the most commonly used driving position. Because the automatic transmission determines the gear according to the size of the accelerator and the speed of the vehicle, the operation method of the accelerator pedal is different, and the shift speed is also different. Step on the accelerator at the beginning, the shift will be late, and the acceleration will be strong. After reaching a certain speed, the accelerator pedal will be released quickly, and the car will immediately upshift, so that the engine has low noise and good comfort.

Use low gear

The driver drove the automatic wave all the way, and his right hand was not idle. According to reports, the low gear of automatic transmission should be used in time under special circumstances, otherwise the car will be obviously damaged. When going downhill, it is necessary to switch to the resistance position in time, and make full use of engine braking to avoid overheating of the braking system and reduction of braking efficiency caused by only controlling the speed with wheel brakes. However, Chen Hezhang also reminded that it should be noted that when shifting from D gear to low gear, the rotational speed should not be too high, otherwise the engine will vibrate strongly, resulting in a sharp rise in the oil temperature of the transmission and even damage to the transmission. Therefore, the correct operation should be to prepare for braking and deceleration before putting into gear at the right time.

In addition, in rainy and foggy weather, if the road surface adhesion conditions are poor, it can also be changed to a low gear and fixed at a low gear to avoid the car slipping. At the same time, it must be remembered that when slipping, you can push the shift lever to the N position to cut off the power of the engine and ensure driving safety.