We are already familiar with manual transmissiontransmissionThe method of using it is more handy.But for automatic transmissioncar, People often don’t know how to use it. In the use of automatic transmission vehicles, a considerable number of owners have insufficient knowledge of automatic transmissions, and continue to use manual transmission methods to drive automatic transmission vehicles, resulting in vehicle damage, reduced vehicle performance, and shortened service life.
The following are the common mistakes of driving automatic transmission vehicles, hoping to help the majority of car owners to get out of misunderstandings.
Misunderstanding 1: D gear is still on when parking for a long time
When a vehicle equipped with an automatic transmission is in a traffic jam, some car owners often just step on itBrake pedal, But the shift lever remains in D (driving gear) and does not change gears. If the time is short, this is allowed. However, if the parking time is long, it is best to switch to N gear (neutral gear) and tighten the parking brake. Because when the shift lever is in the D gear, the automatic transmission car generally has a weak forward movement. If you step on the brake pedal for a long time, it is equivalent to forcibly stopping this forward movement, causing the transmission oil temperature to rise, and the oil is easy to deteriorate, especially When the air-conditioning system is working, it is more unfavorable when the engine idling speed is high.
Misunderstanding 2: When driving at high speed or sliding downhill with N gear
In order to save fuel, some drivers slide the shift lever to N gear (neutral gear) when driving at high speed or downhill, which is likely to burn the transmission.Because the transmission output shaftRotating speedHigh, and the engine is idling, the transmission oil pump is insufficiently supplied, the lubrication condition is deteriorated, and the multi-piececlutchIn other words, even though the power has been cut off, its passive piece is driven by the wheels to run at high speed, which is likely to cause resonance and slippage, which will cause undesirable consequences. When it is really necessary to slide down a long slope, the shift lever can be kept in the D gear to slide, but the engine should not be stalled.
Misunderstanding 3: Start the engine in gears other than P or N
Some drivers start the engine in gears other than P or N gears, although the engine cannot run (because of the protection of the interlocking mechanism, it can only be started in P and N gears), but it may burn the transmission's neutral startswitch. Because the automatic transmission is equipped with a neutral start switch. The transmission can only start the engine in the P or N gear, so as to prevent the car from starting to move forward immediately when the other gears start by mistake. Therefore, before starting the engine, be sure to confirm whether the shift lever is in P or N gear.
Misunderstanding 4: The cart starts the engine
Automobiles equipped with automatic transmissions and three-way catalytic convertersAccumulatorIt cannot be started without power, and it is very wrong to start by pushing or dragging by other vehicles. Because the above method is not able to transmit power to the engine, but it will damage the three-way catalytic converter.
Misunderstanding 5: Increase the throttle to shift to high gear
Some drivers think that as long as they start in D gear, they can shift to high gear by increasing the throttle, but they don’t know that this approach is wrong. Because the shift operation should be "remove the throttle to upshift in advance, and step on the throttle to downshift in advance."That is, after starting in D block, keepThrottleOpen 5%, accelerate to 40km/h, quickly release the throttle to increase to a gear, and then accelerate to 75km/h, release the throttle to increase another gear. When lowering, press the driving speed and step on the accelerator slightly to return to low gear. But it must be noted that the accelerator cannot be stepped on to the end. Otherwise, it will be forced into a low-speed gear, which may cause damage to the transmission.
Since the electronic components of automatic transmission cars are more complicated than manual transmissions and semi-automatic transmissions, it is also more difficult and troublesome to repair and maintain. Here I will introduce the automatic transmission to you.car repairMaintain common sense, so that auto-drive cars can be used more healthily.
① Always check whether the oil level of the automatic transmission is normal.
The automatic transmission oil inspection method is different from the engine oil. The engine oil is inspected in a cold state, and the transmission oil needs to be preheated to about 50°C, and then the gear lever stays in each gear for 2 seconds After that, place it in the parking stop. At this time, the normal oil level of the oil dipstick should be between the highest and the lowest line. If it is not enough, add oil of the same quality in time.
② Change the gearbox oil correctly.
At present, the better oil change method is dynamic oil change, using a dedicated gearboxCleaning equipment, During the operation of the gearbox, fully circulate the old oil and add new gearbox oil after it is drained, so that the oil change rate is as high as 90 or more, ensuring a good oil change effect.
③Master the cycle of changing automatic transmission oil.
The internal control mechanism of the automatic transmission is very precise and the fit clearance is small. Therefore, most manufacturers recommend that the oil change interval of the automatic transmission is generally two years or 40,000 to 60,000 kilometers. In the process of normal use, the working temperature of transmission oil is generally around 120 degrees Celsius, so the quality of the oil is very high, and it must be kept clean. Secondly, after the transmission oil is used for a long time, grease will be generated, which may form sludge, which will increase the wear of the friction plates and components, and also affect the oil pressure of the system and affect the power transmission. Third, the sludge in the dirty oil will make the movement of the valve body in each valve body not smooth, and the oil pressure control will be affected, so that the automatic transmission will be abnormal.
Automatic gearcar maintenanceWhen repairing, you must strictly follow the instructions in the repair manual. If you don’t understand, don’t go to the repair shop and 4s shop to consult professionals. However, the best maintenance method is Use the car correctly in normal times and keep an eye on the overall condition of the car.
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