What gear does an automatic transmission car use to go down a long slope?

Automatic transmission for long slopes with L gear.

The main purpose of the long slope automatic shift L gear is to keep the engine at low speed and play a role in pulling the brake, especially when stepping on the brake for a long time and hanging the D gear, it is easy to make the brake pads heat up, lose the braking effect, and seriously affect life safety. The method of the long slope is as follows: with L gear:

When the automatic transmission car stops on a long slope, the L gear is used if there is an L gear;

The operation essentials of downhill start: 1. Quickly press the clutch plate with the left foot, and hang the gear lever in 2nd gear with the right hand. 2. Turn on the left turn signal and honk the horn (except for the no-go zone).

3. Look in the rearview mirror and release the handbrake (at this point the car starts to slide down the slope). 4. Slowly lift the clutch pedal with your left foot to the top to start (no need to stop in the "half-hanging" position).

When an automatic transmission car goes down a long slope, if it is an automatic transmission car, it can hang D+ gear or D2 gear to go downhill. If it is a pure automatic transmission, you can go downhill with L1 or L2 gears. Because when the car is in low gear, the low-speed output of the gearbox can be maintained, which can effectively make the car go downhill safely and reduce the wear or damage of the car's braking system.

Precautions for vehicle driving downhill:

Downhill deceleration: Before going downhill, the vehicle should slow down in advance and engage in low gear when entering the downhill section. This allows for safe driving on downhill sections, reducing the number of braking cycles and avoiding failures caused by heating of the braking system.

Do not coast with empty gears:

When the vehicle is driving downhill, never use neutral gear to coast, be sure to take the appropriate gear, play the role of the engine, and reduce the driving speed of the vehicle. This is because coasting in neutral will speed up the vehicle, increase the strain on the braking system, and will most likely cause the braking system to fail.

Keep a safe distance from the vehicle in front:

When driving downhill, keep a safe distance if there is a car in front of you. If you are too close to the car, you cannot take emergency measures in time if there is an emergency ahead.

If it is a manual self-integration, it can be hung into D+, which is 1st gear, and then D+ is 2nd gear. This is generally a climb and a downhill gear. If it is a pure automatic gear, it will be hung to L1 or L2, which is equivalent to the 1st and 2nd gears of the manual gear.

Do not apply the brakes for a long time downhill, as this will cause the brakes to fail. So you have to engage in a low gear and let the gearbox force a low rev. So, whether it's manual or automatic, whether it's uphill or downhill, it's all about engaging in low gear.

The manual is 1st gear and 2nd gear, the automatic is L1 gear and L2 gear, and the manual automatic integration is to hang into D gear and then push it in the direction of D+ is D1, which is manual 1st gear. Push it to d+ again and it will be d2, which is the manual 2nd gear.

When the automatic gear goes downhill, you can select the gear that limits the upshift. Automatic cars don't just have D gears to move forward, there are also L gears, which are low gears, which can help with engine braking. There are also automatic transmission cars that are manual and can be selected to downshift through manual mode.

In addition, many SUV models also have an HDC steep hill descent configuration, in some steep slope sections, you can turn on this function, to achieve automatic deceleration, no need to step on the brakes, the car will pass at a very slow speed, the vehicle driver can only control the steering wheel.

When the automatic gear goes down the steep slope, it should be hung into the L gear, that is, the low-speed gear, after the gear is hooked, the vehicle will have a larger speed and strong traction, and the speed will also be reduced, which has a restraining force for the speed of the car, and can help play a certain auxiliary role when going down the steep slope. Automatic cars can also switch directly to manual mode when going down long slopes.

What to pay attention to when an automatic transmission car goes downhill?

1. Because the car will automatically accelerate when going downhill, it is necessary to reduce the speed when going downhill, especially when going down a long slope and down a steep slope, you can avoid the vehicle from losing control by controlling the speed, if the speed is too fast, it is a very dangerous thing.

2. When reducing the speed, do not use the brake frequently, otherwise the brake will overheat and cause brake failure, and the engine brake should be used if necessary.

3. When the slope is large, do not hang D gear when going downhill. When parking, the correct way should also be adopted, such as not being able to step on the brakes for a long time, which will make the interval between the brake disc and the brake pads larger, reduce the efficiency of the braking system, and easily cause the problem of brake failure, which can be slowly braked many times.

Automatic transmission downhill with L gear.

1. The L gear of the automatic transmission car is equivalent to the first and second gears of the manual transmission car, and the same as the automatic transmission car, it also needs to be decelerated first before the gear can be smoothly hung into the L gear.

2. If you don't do this, it will cause some damage to the gearbox of the car, and it is safer to use L gear to go downhill than D gear.

3. When we are driving in D gear, the car can automatically switch different gears according to the speed, if we encounter a steep slope is relatively long, long-term operation of the car's brake pads will cause heating, which will cause the brake system to lose control.

4. Therefore, when we are going down a steep slope or a long slope, we should use the L gear to go downhill. The L gear uses the gearbox and engine to control the speed of the car, which can effectively liberate the brake system function of the brake pads, and it is also safer for us.

Introduction to automatic transmission cars

Automatic transmission, as the name suggests, does not require the driver to manually change gears, and the vehicle will automatically select the appropriate gear according to the speed and traffic conditions. There are six gears on a general automatic transmission car, from top to bottom: P, R, N, D, S, and L.

The car that drives the automatic transmission only uses the parking gear P gear, the reverse gear R gear, the neutral N gear, and the forward gear D gear can fully meet the needs of general driving, and if you encounter some special driving environments, you need to use other functional gears. Therefore, if you are able to choose the right way to control the controls, the car with an automatic transmission will perform better than the manual transmission.

What kind of gear is used for automatic transmission cars generally going down long slopes? The car with a wide and stupid dynamic gear is cautious or generally goes down a long slope with L gear, manual mode, S gear or D gear, and the automatic transmission car means that the driver does not need to manually change gears, and the vehicle will automatically choose the appropriate gear according to the speed and traffic conditions. The automatic transmission gears are:

1. P gear is a parking gear; 2, R gear for the reversing gear; 3. N gear is neutral; 4. D gear is the forward gear; 5. M gear refers to manual mode; 6. L gear is a low-speed gear; 7. S gear is the sports mode. The precautions for downhill are: 1. When going downhill, you can slide in neutral without gear; 2. During the downhill process, you need to hit the steering wheel lightly; 3. Test whether the braking performance is good before going downhill.

Automatic transmission for long slopes with D gear. The automatic transmission will always be in D gear when driving downhill, which is very correct. Hanging D gear can make the driving process safer, and some people will choose to hang N gear, which is actually equivalent to neutral gear.

They think it's more fuel-efficient to hang neutral. But it's also dangerous.

When driving on long downhill roads, slowing down by braking is a very wrong behavior. All car owners who know or have experienced this know that prolonged braking can cause a sharp increase in the temperature of the brake discs and brake pads. Civilian brake discs produce thermal attenuation at high temperatures.

In addition, high temperatures are delivered to the brake fluid, causing air resistance, resulting in long braking strokes and reduced braking force, which can easily cause safety problems. If you drive downhill, even if you don't refuel, the car will get faster and faster because of the force. If the angle of inclination is not long and not steep, shift to D + deceleration.

For example, we often have to go to the underground parking lot, which is not very steep and short slopes. Just shift to D gear + deceleration. What's the right thing to do?

In other words, we need to use the engine's running resistance to reduce the speed of the vehicle. The greater the resistance, the more obvious the deceleration effect. How to increase the running resistance of the engine?

It is to increase the speed of the engine. The higher the speed, the greater the resistance. Of course, we can't increase the speed by stepping on the throttle.

We need to fix this by downshifting. If it is a long and steep slope, brake discs and deceleration should be performed on the top of the slope in advance, and then the following appropriate operation process should be selected according to the details of the vehicle.

Engage low-speed L gear, and then cooperate with each other to brake. When you shift to L gear, the gearbox will control the car's gear in the middle of the 3rd gear, which is not easy to increase the gear. Therefore, it is the safest and most stable to use when going downhill.

Then, throughout the downhill process, the L gears can be used to coordinate with each other to control the speed. At present, the automatic transmissions used in family cars mainly include manual automatic transmissions (AT), continuously variable transmissions (CVT), dual-clutch transmissions (DSG, PDK, DCT) and electromechanical automatic transmissions (AMT).

In addition to P, R, N, D and S, the aforementioned gearboxes have a special gear marked with the + and - symbols. Once in gear, we will go into manual mode for the gearbox. At this point, the gearbox will remain in a specific gear.

Only when the engine revs too high or too low does the transmission force a upshift or downshift. What should we do when we put it in manual mode? We mentioned earlier that we need to lower the gear to increase the engine speed as much as possible, which increases the running resistance of the engine, which is a good way to reduce the speed when going downhill and reduce the use of brakes.

In general, on downhill sections, especially long downhill sections, we should try to reduce the speed as much as possible. If the slope is large, we should try to control the speed to about 20kmh. Since the steeper slope will cause the vehicle to accelerate, we need the engine to break through the maximum resistance, but since the speed is not very fast, only the low gear can get a higher engine speed, at this time, adjusting the gear to the first gear is the most suitable choice.

When the automatic transmission car goes down a long slope, it is best to hang it in the L gear, so that there will not be any damage to the car and the service life of the car can be extended.

It is best to hang into L gear, because L gear is a low gear, and the speed of the car is very low, which can reduce the wear and tear of the engine.

It is best to hang in D gear, which can reasonably control the speed and avoid the situation of engine overheating, which is conducive to ensuring the speed of driving.