When going downhill, hang 2nd gear, and pin the car without ignition What is the principle?

This can be called "anti-drag". The engine was originally dragged by a starter, that is, an electric motor. This is because the engine has four working strokes, and only one of these four working strokes is workmanship, so the engine cannot start on its own like an electric motor.

It must be dragged up by an external force. And through the gear reverse towing is to use the inertia of the car to start the engine, which is an emergency starting method when the battery is out of power. Use the wheels to drive the transmission to rotate, and then use the transmission to drive the engine to rotate, and finally complete the engine start.

The automatic car can't be started in reverse tow because its transmission can't drag the engine to run!

Hehe, the principle is very simple, it's similar to a cart, and the higher the gear, the smaller the thrust required, the specific theory, is the reason for the transmission ratio. For a simple example, when the engine is at the same speed, the 2nd gear is faster than the first gear, which does not need to be said, that is to say, the transmission ratio of the 2nd gear is higher. So if it is the other way around, that is, when pushing the cart, the speed of the same cart and the speed of the engine with 1st gear must be fast, so the transmission ratio of 1st gear is high when pushing the cart.

The higher the gear ratio, the more laborious it is, the less easy it is to start, and the gear ratio is lower when pushing a high-grade cart, so it is easy to start at a high grade!!

It's easier to pin up if you hang 3rd or 4th gear.

The wheels drive the transmission to rotate, and the transmission then drives the engine to rotate and start.

It is equivalent to using the inertia of the car to bring the engine up.

The old driver also talked nonsense, think about it, no matter when the handgear car goes downhill, it is not allowed to hang neutral, which is a very serious problem. You must put on the gear corresponding to the downhill speed, and the right foot leaves the accelerator and stays on the brake, and you can press the brake at any time.

If you are afraid of towing a broken car, think about human life is not as good as a gearbox? If you're afraid of dragging the gearbox downhill, what about going uphill? Push it up.

You're right, don't pay attention to those old drivers, they're going to fucking kill people.

Manual transmission is very convenient when encountering downhill slopes, just press the clutch, hook the gear to neutral, and then adjust the speed of the car by controlling the brakes.

Hit the brakes and downshift! It's best not to be in neutral!

Because the gears in the gearbox are composed of gears, the engine speed cannot go up, and the speed output of the gearbox cannot go up, so the downshift can also control the speed of the car!

Step on the brakes on the line, according to your own speed, for example, downhill you want the speed is 60, then your gear is in the 4th gear position, and then do not step on the accelerator, the downhill wheels will drive the engine to rotate, the speed will be faster and faster, and then the speed is controlled with the brake, which can ensure that the engine is at about 2000 rpm, will not be too high to cause wear, and will also ensure that the engine will not stall and cause brake failure.

Not a professional, but with a lot of experience. In the case you said, if it's a small car, there's no need to be so troublesome, as long as you don't accelerate anymore. and then with the brakes.

It is also safe to drive in high-speed gear. If it's a large truck, what you're saying is doable. However, it is also necessary to cooperate with the brakes appropriately.

Otherwise, the engine will not be able to stand it.

The car can be properly matched with the high-speed gear! It's best to hang the second or third gear for the big car! This one isn't dead, how many gears you hang depends mainly on the load of the car and the speed you want!

What gear can be used to play the engine braking, but the braking capacity of 1st gear is greater than that of 2nd gear, and the braking ability of 2nd gear is greater than that of 3rd gear, as long as you do not make the speed too high when you hang into gear, you must remember to use it properly with the brakes.

Hello friends, I estimate that you are not very old in driving for this question, and you should be a novice.

In this kind of situation, don't be nervous about the first point, first reduce the gear (around the second gear) according to the road conditions on the scene, and the road conditions can be in the third gear if the road conditions are good. , control the speed can not exceed 50 miles, brake do not step on for a long time. It is best to tap the brake at a certain speed (such as the speed of the car reaches 60 miles), then you tap the brake to control it to 50 miles or 40 miles, and brake appropriately.

Don't learn the master's idle coasting, this requires skilled driving skills and there is a lot of safety. If you often drive in this road condition, check the brakes more.

Hang low gear (never neutral) and drive slowly! This way, it won't be too fast when going downhill and it's easy to brake.

Don't step on the brakes continuously, let alone slam on the brakes, so as not to overheat the brake pads and cause brake failure!

As long as you can control the speed of the car, you can do it in any gear.

It's not a very long slope, and it's okay when the road conditions are good.

Hang in low gear and use the engine to brake.

Low-gear operation Less press on the accelerator and brake.

This depends on personal experience, the relatively high slope is generally 1 to 2 gears, and the downhill slope can be any few gears, as long as the clutch is pinched, and the brakes are properly controlled to slow down.

Motorcycles can use one, second and third gears to go uphill according to the different power of the car and the number of people carried; The downhill is generally in third gear or above.

The method is as follows: 1. When going uphill, refuel and rush up, if it is a small slope, it will rush up all of a sudden, if it is a long steep slope and feel that the engine is struggling, drop a gear, if it is still struggling and continue to downshift, of course, the action must be fast, otherwise it is easy to stall.

2. The lower the gear, the more powerful the engine, the first gear is the most powerful, if you can't do it when you can't move down quickly, depending on the steepness of the slope to 2nd or 3rd gear in advance.

3. When going downhill, if the road is good, the slope is not particularly steep, hang the neutral gear to slide or pinch the clutch with gear, put your hands and feet on the front and rear brakes and be ready at any time, and brake the car to slow down if you feel too fast.

Hehe, I rode a bit of a motorcycle.

I think you use 2nd gear and 3rd gear when you go uphill, depending on the slope, if it's steep, it's better to lower gear. When going downhill, if you don't have the front brake, I recommend that you use 3 or 4 gears, and don't put the gas pedal on the gas pedal, and then lightly press the rear brake, so that the gear will automatically reduce the speed of the car.

The automatic gear should be slowed in, 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.

The continuously variable transmission is composed of two sets of transmission wheels and a transmission belt, which is a kind of automatic transmission, but it can overcome the shortcomings of ordinary automatic transmission, such as "sudden shift", slow throttle response, and high fuel consumption.

Compared with the traditional automatic transmission, the structure is simpler, the size is smaller, it can change the transmission ratio freely, so as to achieve the whole process of continuously variable speed, so that the speed of the car changes smoothly, without the traditional transmission when the "pause" feeling.

Slow. The automatic gears are P stop, R reverse, N neutral, and D forward. In normal driving, if you want to brake, you only need to step on the brake, if you want to continue driving, hang the gear in D, release the brake and refuel.

During driving, D gear and S gear can be switched freely, no need to step on the brakes, in addition, when switching between the gears, be sure to step on the brakes, turn the gear lever to the correct gear and then release the brakes. Releasing the brakes early will shift the wrong gear.

The speed of automatic gear is based on the feel, and the following is an introduction to the skills of gearing:

1. When driving an automatic transmission car, the driver should automatically change gears in a timely manner and abandon the concept of a "D" to the end. For example, when the car climbs a steep slope with a large slope, and you feel that the power is insufficient when using D gear, you should step back one gear and climb the slope in low gear, which is not only powerful, but also more brisk. Avoid dragging the vehicle in a higher gear, as the engine is dragged too much, the chance of damage is greater, and the fuel consumption increases, and the engine carbon deposit will also increase.

2. When going downhill, the brake should not be used to control the speed all the time, and the brake and low-gear cross should be used to reduce the wear and tear of the brake. When the car is driving on the congested road in the urban area, the gear can be placed in the 2nd or 3rd gear, which can accelerate quickly and avoid the generation of carbon deposits; When the speed exceeds 60 km/h, driving in D gear not only saves fuel, but also does not impair acceleration.

3. Don't hang up often in N gear.

In the case of traffic jam or waiting for people for more than 1 minute, it is best to hang the gear on the N gear, which can not only reduce fuel consumption but also avoid overheating the transmission oil, so as to protect the gearbox. If the parking time is more than 3 minutes, it is best to hang on the P gear, which is fuel-efficient and environmentally friendly. When you need to stop, you subconsciously move the gear from D to N, but it is not necessary to do so.

When temporarily stopping, just press the brakes, and frequent use of N gear will shorten the life of the automatic gearbox.

Automatic car don't think about what d, l or something, just hang the d gear directly, that gear is just a range value, that is, you hang that gear you just want to go in that range, if you hang a low gear, then you want to be fast when you are exercising normally? Don't you have to hang up the high-speed gear, don't you hang back and forth and become manual again?

As for the impact when shifting gears, it's not a matter of what gear you hang, that should be the problem of your gearbox, you see what you wrote Are, such a good car, just find a better place to check and check, to see if it is a normal impact or something wrong with the gearbox.

p-parking, which stands for parking gear.

When you reach your destination, hang the gear in P gear when you stop the engine, and the wheels and gearbox are locked at this time, which can prevent the slope from slipping.

r-reverse stands for reverse gear.

There's not much to say about this gear, just put it in R gear when you need to reverse. When hanging the reverse gear, pay attention to stabilizing the speed of the car first, and never suddenly hang the reverse gear when accelerating straight ahead.

n-neutrial, which represents a vacancy.

Gear can be hung in N gear for short stops, such as when waiting for a red light. Of course, you need to apply the brakes at this time, otherwise there is a risk of slippage.

D-drive, which is the most used forward gear.

As the name suggests, when driving forward, you can put in D gear and then step on the accelerator.

Nowadays, car lovers like to buy automatic transmission, and everything is simple to drive, and the automatic transmission car is more complex in configuration, and the cost of maintenance is higher, so you can't be too casual when you usually drive, especially the gear can not be used indiscriminately.

1. The "P" on the stall is actually a contraction of parking.

Write;That is, the parking gear, hanging this gear, you can use the vehicle's auxiliary braking device to achieve parking.

2. The "r" on the gear is actually the abbreviation of reverse;That is, when the vehicle needs to reverse, only when the gear is hung can the reverse be realized, but it must be put into R gear after the vehicle is stopped.

3. The "n" on the gear is actually the abbreviation of neutrial;That is, neutral, when the vehicle is in neutral, the power system connection between the engine and the gearbox will be cut off. When the vehicle is going downhill, it is not recommended to slide in neutral gear, otherwise there will be certain safety hazards.

4. The "D" on the gear is actually the abbreviation of Drive;That is, the forward gear, which is undoubtedly the most used gear, especially the automatic transmission model, "D gear to go the world" is the driving mode that many drivers are keen on.

Introduction to automatic transmission gears, what does P, R, N, D, S mean?After reading it, I understand it in seconds!

First of all, the gears of the car are divided into two types: manual transmission and automatic transmission. Manual gear: generally divided into 1st gear, 2nd gear, 3rd gear, 4th gear, 5th gear, and R gear.

Among them, 1 and 5 gears are all forward gears, and R is the reverse gear (R gear is hung before reversing). R is an abbreviation for Reverse.

Automatic gear: The common gears are generally as follows: P, N, R, D, L, S, M, etc.

The R gear of R gear and manual transmission has one meaning, and they are both reverse gears.

P gear, short for Parking, parking gear. It is generally used when the engine is turned off and parked.

n gear, an abbreviation of neutral in English, neutral. It is generally used when stopping for a short period of time, such as when waiting for a traffic light.

D gear, an abbreviation for DRIVE, is a forward gear. L gear, the abbreviation of English low, low-speed gear, also called climbing gear, is commonly used when climbing.

Cart starting is another commonly used emergency starting method, but this is a means of unavoidable, because this has a certain amount of damage to the engine and clutch, so it can not be commonly used, and automatic transmission vehicles can not use this method to start. What should I do when I need to start the cart?

1) First of all, you should pay attention to safety. Observe whether the road conditions of the vehicle's parking position are suitable for the cart to start, for example, you can increase the speed of the vehicle with the help of a downhill road, if the front of the car is an uphill road, then it will be very tiring to push the cart forward, and it is difficult to increase the speed, so you should turn the head of the vehicle to push the cart in the downhill direction. Try not to start the cart on a road section with a lot of vehicles and pedestrians, so as to avoid accidents caused by improper response by the driver after the vehicle is started.

2) The ignition should be turned on before the vehicle is pushed, and after reaching a comparable speed, the transmission should be put into 2nd gear, and then the clutch pedal should be quickly released and refueled. Once the engine starts, you should quickly press the clutch pedal, control the throttle at the same time, do not let the engine turn off, and then stop slowly.

Some people may wonder about the cart start: why is it difficult for some vehicles to start with a starter, but easy to start with a cart starter? This phenomenon is especially obvious for older cars.

This is due to the fact that the engine cylinder pressure of the vehicle is insufficient, and the performance of the battery is much worse. When starting normally, the power consumption of the starter is very large, if the performance of the battery is poor, its voltage will drop a lot, the voltage and current of the ignition system will be insufficient, resulting in insufficient spark plug jumping energy, it is not easy to ignite the combustible mixture in the gas cylinder. When the cart starts, although the voltage of the battery is relatively low, it can all be used for the ignition system, so it is easy for the engine to start under the condition of relatively strong ignition energy.