How to gear a 12 gear truck, how to gear a car with 12 gears

There is a converter for high and low gears on the gear lever, and the first six gears of 12 gears are low gears, and the rear six gears are high gears.

First of all, you will see that there is a device on the gear lever that can go up and down, the 12th gear box is down to the low gear, and the upward gear is 7th to 12th gear.

Large trucks shift to see the speed and idling, empty car is easier, the gear to step on the clutch and then the gear, shift to the tower clutch first and then step on the clutch gear, now the car generally has a synchronizer, that is to say, a foot clutch can. To resist the high-end hanging, the speed must reach a certain speed ratio.

First put the high and low switch on the low speed and then start in first gear, until the sixth gear and then hit the switch to the high speed, step on the clutch and hook it into the seventh gear, which is the position of the first gear, and continue to hang up until the twelfth gear.

The gearbox is a very important component on the vehicle, which can change the transmission ratio and expand the role of the torque and speed of the driving wheel. With the development of modern science and technology, the gearbox has also been upgraded, from the initial manual gearbox, to the current continuously variable gearbox, from no synchronizer to synchronizer, the control is more and more convenient.

At present, diesel engines are widely used in construction machinery, and the range of torque and speed changes is small, and can not meet the requirements of the vehicle for traction and driving speed under various working conditions, and the gearbox needs to be used to solve this contradiction. The performance of the gearbox is the key to measure the power, economy and drivability of construction machinery. The current transmission system mainly includes:

Mechanical transmission, hydraulic transmission, hydrostatic transmission. The gearbox has manual shift and power shift, and the structure has fixed shaft type and planetary type.

How to hang 12 gears in a big truck, it depends on what the old driver said is right!

Operation of the 12-speed gearbox:

1. Put the pre-selection valve in the following position and push it into the first gear, in fact, this 1st gear is common with the 2nd gear, that is to say, the half gear, at this time, if you want to enter the half gear between the 1st gear and the 2nd gear, the high and low transfer switch will be reversed to the high-end position, and then directly step on the clutch;

No need to move the gear lever and lift the clutch again, you will enter half gear between 1st and 2nd gear, and so on can change to other gears.

2.Place the high ground conversion switch in the lower position and follow the symbol on the gear handle step by step until you reach the 6th gear position.

3.Then turn the high and low transfer switch down to the high gear position, then go from 6th gear to 7th gear, and continue to enter 12th gear step by step.

As shown in the figure, there is a fast and slow gear conversion lever on the side of the gear lever, when the conversion lever is in the slow gear, the corresponding gear is: r, when the conversion lever is in the fast time, the corresponding gear: r

This is a gear diagram, in addition there is a fast and slow gear conversion lever on the side of the gear lever, when the conversion lever is in the slow gear, the corresponding gear is: r, when the conversion lever is in the fast time, the corresponding gear: r

The gear is also called the grade. Abacus terminology. Refers to the block that has been given a unit of calculation, and now refers to the order of the step-by-step change. For example: the order of the gearbox of the vehicle and boat, the order of adjusting the unit of measurement in the measuring tool, etc.

Just like any other car, there is a high- and low-speed converter on the gear stem. Seven gears are on one gear.

It's easy! No-load 1 and 2 gears are basically not used! Heavy loads will only be used so much! Divide high and low speed! You don't understand that it's complicated!

You have to ask the designer of the car.

The gears of large trucks are generally 12 gears, and the gears of large trucks are not like family cars, which need to be overstepped. Generally, large trucks have high and low speed control, there is a device for toggling up and down on the gear lever, one to six gears belong to the low-speed gear, seven to twelve gears belong to the high-speed gear, when you need to switch the high-speed gear, you need to toggle the high-speed control device upward, and then hang the gear.

Under normal circumstances, the truck does not need to start in first gear when it is fully loaded, because the weight of the body is too heavy and the starting speed of the first gear is too slow, so the truck generally uses the second or third gear to start.

Gear shift requirements for large trucks: Gear shift requirements can be summed up in eight words: timely, correct, smooth and fast.

Timely: It is to grasp the right time when changing gears, and the shift cannot be too early or too late.

Correct: The clutch pedal, accelerator pedal, and shift lever work together.

Smooth: After shifting gears, relax the clutch pedal smoothly for a smooth ride.

Rapid: Shift gears quickly, shorten the shift time as much as possible, and reduce the loss of kinetic energy of the car.

The 12-speed box truck starts in 3 gears, and the empty car starts in 4 or 5 gears. When the Fast gearbox in Figure 1 switches between high and low gears, the high and low gear paddles are toggled when the vehicle is moving, the clutch is pressed, the gear is put into neutral, the clutch is released, the clutch is pressed again, and the corresponding gear is hooked, but there are also many drivers who are used to dialing the gear into neutral and then dialing the high and low gear switching paddles. But if it is a downshift, and then you step on the clutch and hang into neutral, you need to step on the accelerator in the air, and then retreat into the corresponding gear, as for the speed and throttle strength of retreating from a few gears to a few gears, this needs to be experienced in practice, and it is not clear at all.

Figure 2 of the high and low switch is to switch the high and low gear by swinging the left and right, to the left is the low gear position, to the right is the high-end position, the 4, 6 gear and 5, 7 gear position is the same, the shift gear and fast is almost the same, but also after the gear retreats into neutral gear, swing the lever to switch the high and low gear, and then step on the clutch to hang into the corresponding gear.

Big truck gear skills mantra, want to know how to gear to take a look.

Sixteen gears of large trucks adopt fast and slow bridges, there is a fast and slow bridge switching lever, through which the gear mode conversion can be realized, and then the gear conversion in each mode is carried out through the gear lever, and the specific operation steps are as follows:

1. Open the door on this side of the cab.

2. Press the brake pedal.

3. Turn the key to start the engine.

Fourth, the fast and slow bridge switching is realized through the fast and slow rod.

Fifth, hang up and drive through the gear lever.

Generally, Fast and ZF gearboxes are accurate to say that they are eight-gear and sixteen-speed, which is regarded as eight gears, but each gear has a half-gear, and when you need to use it, you need to use the half-gear paddles up and down and then clutch with one foot.

Which is the fast and slow bridge converter?

1: Some cars are divided into high and low grades, low gear 1-8, and change to high grade is 9-16.

2: The general fast and ZF gearbox in the group is precisely eight gears and sixteen speeds, which are regarded as eight gears, but each gear has a half-gear, and when you need to use it, use the half-gear paddles up and down and then with a foot clutch.

3: Refer to Fast's hanging method:

1.The main box with synchronizer: when the main box is in gear, first take off the gear to neutral, step on the clutch to the end, and directly hang the corresponding gear, pay attention to the speed is not too fast, and the gear should be soft;

2.The main box does not have a synchronizer: when the gear is in gear, the method of two-foot clutch is adopted, and the speed of the vehicle and the engine speed are mastered.

3.Shift Gear shift refers to the transmission, which is used to change the torque and speed of the engine crankshaft to meet the needs of the different driving requirements of the driving wheel traction and speed under different driving conditions such as starting, accelerating, driving and overcoming various road obstacles.

4: The transmission has a sub-box of the sub-box gear method:

For single-H operation, it is necessary to pre-select first, then take off the gear to N gear, pause slightly in neutral for 1s, and then push the gear lever to hang the corresponding gear; For double H operation, first take off the gear to N1 neutral, push to N2 neutral, pause slightly for 1s, and then push the gear lever to hang the corresponding gear.

French special twelve-speed gearbox, it is actually six when in addition to the reverse gear, it is changed through a high and low speed switch, this to the high-end, the first to the sixth gear belongs to the low gear, the seventh to the twelfth gear belongs to the high-end.

Generally, to drive this kind of car, you have to learn to jump gears, there is a device on the gear lever that can go up and down, the 12-gear box is the low gear downward, and the upward gear is 7 to 12 gears. From the first gear to the 6th gear, when the seventh gear is hung, there is a high and low switch at the head of the gear to dial the switch to the top is high-end, and then the position of the 1st gear is the seventh gear, and so on.

Gear shift operation essentials:

1.Add and speed block.

1) Gear up essentials. Before the car shifts, it should step on the accelerator pedal smoothly according to the road and traffic conditions, and gradually increase the speed, which is called "rushing". When the speed is suitable for shifting into a higher gear, immediately lift the accelerator pedal, step down the clutch pedal, and shift the gear lever into the next gear; Then slowly press the accelerator pedal while lifting the clutch pedal to keep the car running smoothly.

Use the same method as the situation to switch into a higher gear. The key to smooth gear is the size of the "punch", the "punch" distance should be determined according to the level of the gear, the higher the gear, the longer the "punch" distance.

When rushing the car, the accelerator pedal should be steady and fast to the medium speed. When the gear is added, after shifting into a higher gear, the clutch pedal is quickly lifted to the semi-linkage position, and it should be stopped for a while and then slowly lifted to make the power transmitted smoothly and avoid causing the vehicle to "rush forward" after shifting.

2) Timing of the shift. When the car is moving, as long as the road conditions and traffic conditions allow, it should be changed into a higher gear code rubber in time. Before the gear, you must first accelerate the "rush" to ensure that there is enough power to make the car continue to drive smoothly after the gear.

"Rush" (vehicle speed) is too small (low), which will cause insufficient power and shaking after shifting; If the "rushing" time is too long, the engine will run at high speed for a long time, which will aggravate wear and tear, and the economy will decrease.

Therefore, the "rush" should be appropriate, the gear should be timely, and the timing of the gear should be determined according to the engine sound, speed, and power. If you press the accelerator pedal after shifting, the engine speed drops and the power is insufficient, it means that the time to shift is too early.

Action points: Rush to accelerate and listen to the sound, step on the clutch and pick up neutral; Wait for the sound of oil to be heard, and then step on the clutch and add a gear.

2.Downshift. 1) Downshifting essentials.

Relax the accelerator pedal, quickly step on the clutch pedal, move the gear lever into neutral, then relax the clutch pedal, quickly step on the accelerator pedal with your right foot (add "empty oil"), and then quickly step on the clutch pedal, move the gear lever into a lower gear, and relax the clutch pedal according to the essentials of fast-stop-slow, so that the car continues to drive in the new gear.

2) Downshift timing. During driving, when you feel that the engine power is insufficient, and the speed gradually decreases, it means that the original gear can no longer maintain the normal driving of the car, and you should change to the lower gear in time and quickly. If the speed of the vehicle is significantly reduced, it can be overstepped.

Operation sequence: reduce to low gear when you get to gear, don't panic when you see the speed; One step picks up two lifts, and three steps hang the oil to keep up.

Action points: clean up the throttle and pick up the neutral gear, and empty the fuel according to the speed of the vehicle; While the sound of oil has not disappeared, the clutch is put into low gear.