Automatic transmission, no need to step on the brakes, you can be in gear, what s going on?

My car is Sega.

3-compartment automatic transmission.

A problem arises today. Only in the p seat can not be put on other gears without stepping on the brakes, and in other gears can be put on the gear without stepping on the brakes, is it not a gearbox.

Broken, huh? --otheranswer:--Dizzy, big brother, how did you drive your car? Automatic.

When the car brakes, the engine and the gearbox (protect the engine) must be separated, so your braking is equivalent to stepping on the clutch, and when you are in gear when you are in other gears, the gear is not really up at this time, but the clutch is selected, and then you have the accelerator, the engine and the clutch plate friction speed is matched, I don't believe that your car is not like this when you just bought it? -otheranswer:--Hurry up and fix it --otheranswer:

My car is a Sega 3-box automatic and I had a problem today. Only in the P seat you can't put on other gears without stepping on the brakes, and you can put on gears without stepping on the brakes in other gears, is the gearbox broken? Normal.

The automatic transmission is only available in P gear.

There is a brake locking mechanism in the position. Except for the P file. There is no need to apply the brakes in any gear to be in gear.

If you have to apply the brakes in other gears, you can only get in gear. So how does the vehicle change gears while driving? For example, some people are one to two hundred meters away from the red light.

Likes to push from D to N.

If you need to apply the brakes at this time, how to do it. Another example is uphill, some people like to drop from D gear. How do you lower if you hit the brakes?

In cars, there is no direct connection between the braking system and the gearbox, so there is no need to brake at all to change gears.

PS: Manual gear shift to step on the clutch, never step on the brake to shift gears.

The so-called automatic transmission, as the name suggests, does not require the driver to manually change gears, and the vehicle will automatically choose 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.

P - Parking, Parking, Starter Gear. When the parking is not in use, the gear is here, and the wheels are in a mechanical locking state, which can prevent slipping.

r - reverse, reverse. Used when reversing.

n - neutral, neutral. When stopping temporarily (e.g. at a red light), use this gear. Note that this gear indicates neutral gear, and to prevent the vehicle from slipping on slopes, be sure to apply the brakes.

D - drive, forward gear, also known as drive gear. It is to use this gear when moving forward.

L-Low, low gear. When going down a hill or going down a long-distance slope, hang the gear here, which can limit the gear of the car to automatically only be in the lowest gear (equivalent to the first gear of the manual transmission car), which can make the car use engine power to brake when going downhill, and the driver does not need to step on the brakes for a long time to cause the brake pads to overheat and cause danger.

S - Sport, which means sports mode, when this gear is engaged, the gear can be switched freely, but the timing of the shift is delayed, so that the engine can maintain high rev for a period of time, so that the power of the car increases. In this gear, it will cause fuel consumption to increase.

It may be normal and not broken, for the following reasons:

Actually, automatic.

Whether the car can be hung from N gear to D gear without stepping on the brakes depends on the manufacturer's settings. Some cars can't, some can't. But that's not because of the gearbox, it's because the manufacturer won't let you do it. Because for the gearbox, there is nothing wrong with not applying the brakes and hooking up from N to D.

We know manual transmission cars.

It is not allowed not to step on the clutch gear, because when the clutch is not pressed, the transmission input shaft rotates with the engine, and the two are hard connected. At this time, the gear speed difference is too large, and it is not easy to hang up. Second, even if you hang up the gear, the gear is hard, there is no buffer, and it is easy to break the gear.

And the engine suddenly adds a lot of resistance, basically the second stalls.

But automatic transmissions are different, and in theory they are automatic transmissions.

There is no problem with not hitting the brakes and gearing. But some cars can be hung from N to D without applying the brakes, and some cars cannot. For example, my car is in neutral.

Sometimes I wait for the red light and pull the handbrake directly in neutral, and when the red light is about to end, I don't step on the brake and hang the D gear directly, and then let go of the brake and go.

And some cars can't, you can't move without stepping on the brake lever in N gear. This is because the manufacturer has set up a locking mechanism in the gear lever, and they think that not stepping on the brakes and directly hanging the gear will cause the vehicle to start suddenly, which will affect safety, so they set the lock gear lever in neutral mode, and step on the brake first when you need to be in gear, and release the gear lever lock when the system receives the brake signal, and you can shift freely.

Therefore, the automatic transmission supports no brake gear from the hardware point of view, but some manufacturers will restrict you from stepping on the brake gear in the shift logic.

Transmission positioning locking device

Self-locking device. To prevent it from automatically generating an axial direction.

Movement causes automatic gear and automatic dismounting, and ensures that the transmission gear (engagement gear ring) of each gear is meshed with full tooth length, and a self-locking device needs to be arranged in the transmission control mechanism so that the axial positioning and locking of each gear fork shaft can be carried out.

Three deep holes are drilled at the front end protrusion of transmission cover 3, and are positioned at the direct top of three fork axles 6, and self-locking steel ball 1 and self-locking spring 2 are loaded in the holes. Each fork shaft has three grooves on one side facing the steel ball 1 (the depth of the groove is less than the radius of the steel ball), and the middle groove is in the neutral position when it is aligned with the steel ball, and it is in a certain working position when the left or right groove is aligned with the steel ball.

The distance between adjacent grooves is equal to the distance by which the adapter sleeve (or sliding gear) is shifted from neutral to the corresponding gear (ensuring full tooth length engagement). The self-locking steel ball is pressed into the corresponding groove of the fork shaft by the self-locking spring, which plays the role of locking the gear and preventing automatic shift and automatic disengagement.

When shifting, the driver exerts a certain axial force to the fork shaft through the gear lever, and the force overcomes the pressure of the spring and extrudes the self-locking steel ball from the fork shaft groove and pushes it back into the hole, and the fork shaft slides through the steel ball for axial movement, and drives the fork and the corresponding coupling sleeve (or sliding gear) to move axially.

When the fork shaft is moved to its other groove and aligned with the steel ball, the steel ball is pressed into this groove, and the engagement sleeve (or sliding gear) driven by the fork is dialed into neutral or another gear.

Hello, if you don't step on the brakes, you can hang the gear, you can first do the computer test to see if the system is faulty, you also need to check whether there is a problem with the brake switch, and whether the shift lock solenoid valve is normal.

When starting, I am afraid that the vehicle will rush forward, so I have to step on the brakes and hang the gear, for the sake of safety, there is an interlock mechanism, and the brake lock is lifted. An automatic transmission uses a planetary gear mechanism to shift gears automatically depending on the degree of accelerator pedal and vehicle speed changes. The driver only needs to control the speed of the vehicle by manipulating the accelerator pedal.

When the car starts to go, only by pressing the brake pedal can the gear lever be removed from P or N gear and into driving gear. Release the brake pedal and the car will be slow. The reason why the brakes should be applied in advance is also for the safety of the driver and the car.

Otherwise, after the engine is started, the car will move if the forward gear is engaged, and if the driver does not react enough, it is easy to collide.

Cars with automatic transmissions need to apply the brakes except for coming out of P gear.

Other normal driving gears do not need to be braked.

Just switch gears and you're good to go.

Because of the automatic transmission car, the starting brake is equivalent to the clutch, so the brakes must be applied when the gear is in gear.

Hello Automatic.

The car generally has two sets of gears.

Locking mechanism: a set is the one pressed by the thumb, when moving the gear lever from a specific gear to another gear round bridge, it must be hidden to press this button, otherwise the gear lever can not move. Of course, not all lever movements need to be pressed, such as Japanese cars.

From N to D, you can move directly without pressing this button, which varies slightly depending on the model.

Another set is the brake linkage locking mechanism: when the ignition switch is turned on, the brake switch is also turned on, the computer will turn on the gear locking solenoid valve (located in the gear guard under the gear lever), the solenoid valve is energized, that is, the gear linkage locking mechanism is opened, and the gear lever can be moved from P to other gears.

Your car may be the second set of mechanisms broken, no need to power, the locking mechanism is open, you can go to the repair station to disassemble the gear lever guard to see, and in the case of the ignition key open, repeatedly step on the brakes, listen to and observe whether the solenoid valve clicks, and then let the professionals gradually eliminate it.

This situation may be caused by a brake light switch problem or a wiring problem.

When an automatic car is in gear, you need to apply the brakes. 1.The gears of automatic vehicles are:

P Park, R Reverse, n Empty and D Forward. Analyze why you need to apply the brakes one by one. 2.

First, when the car starts at a standstill, it will shift from P gear to other gears. In this case, the brakes must be applied and the lock button on the gear lever must be pressed to start. This is primarily a safety precaution.

As we all know, if you turn on a manual transmission and start from a hail block without stepping on the clutch, the car will rush forward, and the automatic transmission solves this problem very well. As long as you don't step on the brake to start, don't think about the fire instead, when parking, when the other gears are in P gear, you also need to step on the brake and press and hold the lock button. Secondly, when the other pants are in large gears, you also need to press the brake and lock buttons at the same time.

Contrary. However, if it is D gear to S gear or L gear, in this case, you can freely switch gears without pressing the brake or lock button. However, it should be noted that if it is D or S, please pay attention to the speed when switching from high speed to low speed L.

In the absence of high speed, directly switch the gear to low speed, which will have a certain impact on the gearbox, and the speed will be instantly increased. Some people may ask, is it possible to shift to R gear while driving? Theoretically, this is not allowed.

However, there are experiments that have been done. When the vehicle is in R gear at a speed of 60 km/h, the vehicle does not reverse and drives straight forward, but a reversing image appears on the center display. It is possible to change gears, but the trip computer will think that this is wrong logic.

I think you're wrong, so you won't execute the reverse command, but the speed will increase right away. In addition, whether it is parking or reversing, when the vehicle stops, be sure to change into the corresponding gear, P gear or R gear to prevent the transmission gear from being stuck. Also, it is not recommended that you slide into N gear, which does not save fuel.

As long as the car's engine is running, it injects fuel to keep the car running. Shifting to n gear and not using the engine traction brake will reduce braking power. This is a wrong view.

N files are only used in certain situations. For example, when you need to tow a car or wait for a red light, you can release your right foot by engaging in N gear and pulling down the handbrake.

Generally speaking, because there is a locking mechanism in the gearbox of the automatic transmission, the automatic transmission car cannot be put into gear without stepping on the brakes, which can effectively avoid accidents caused by the driver's operation error.

The gears of the car are locked by a solenoid valve. If it needs to be unlocked, the controller must signal to unlock the solenoid valve. That's why most automatic transmission models have a special button on the knob to unlock it.

For safety reasons, automatic transmission models must shift gears at a standstill (except for changing D and S gears). If you change gears while driving, the gears of your car's gearbox may wear out, which in turn will affect the lifespan of the gearbox.

Pin cover classification for automatic transmissions:

As of July 2019, the automatic transmissions on the market include pure automatic transmissions (5-speed automatic and 6-speed automatic transmission), automatic manual transmission (5-speed automatic manual transmission and 6-speed automatic manual transmission), dual clutch transmission (7-speed dual-clutch transmission), CVT continuously variable transmission (analog 8-speed and analog 10-speed transmission), AMT (similar to manual transmission and automatic transmission, there is no clutch in the travel room, but manual addition and reduction of gears are required), etc. The advantages and disadvantages of different types of automatic transmissions are also different, and car owners can choose according to their own needs.

Millions of car purchase subsidies.

It's so normal, I often don't step on the brakes and go straight to D. I am a friend of Feiyin Sensitivity, if it is helpful to you, please click to reply to Zao Hong's below, thank you!