Shifting skills of heavy duty vehicles
发布时间：2016.09.20 新闻来源：邢台远拓汽车零部件制造有限公司
Manual gear shift skills, the first step: step on the clutch (device), loosen the throttle
This step could have an impact. The reason for the shock is that the clutch is loose and the order of the accelerator is not correct. If the first loose throttle step on the clutch, the engine and the clutch not to stop the oil separation, may be "anti drag" engine braking phenomenon, which will have a "setback" impact. After stepping on the clutch and loosening the throttle, the engine speed began to decrease.
Manual shift gear shift second step: shift
This is a substantial step in the entire gear change process. Normally, the gear will not be impacted because of the synchronizer. After the speed is synchronized, the two gear will mesh smoothly, so this step will not produce any impact. Not only that, when the shift operation (such as force size, exchange time) properly, will produce similar shift lever is automatically sucked in place of the feeling of the driver, as good as a pleasure".
Manual shift gear shift third steps: lift clutch, refueling
This is one of the most likely stages of shock, and clutch control is critical. The timing of the clutch is when the clutch is lifted and the clutch is switched into the semi clutch. When the clutch is pressed and the transmission handle is replaced with a new gear, the speed of the two gear to be meshed in the transmission is smoothly meshed after being synchronized by the synchronizer. After the gear shift, the speed of the clutch plate changes accordingly under the condition of the new gear ratio, which varies with different gear switching and different speed. According to the characteristics of the gearbox ratios, can be summed up in two of the clutch speed change: gear, clutch shift speed is reduced, reduction gear, clutch shift speed is increased before; whether the upshift or downshift, stall speed is lower, the change range is big.
The actual driving conditions of the road, the driver to operate the myriads of changes, in the subtle shift shock caused by all kinds of it, there may be some other reasons, it is impossible to tell. In short, no matter what the cause of the operation, as long as the engine speed and clutch speed is not synchronous, it may cause the impact of lifting clutch. Tracing the source, the clutch is not synchronized is the culprit".
Manual gear shifting techniques to resolve the setback
When lifting the clutch, the engine speed does not match the speed at that time, that is, there is a difference between the speed of engine and the speed of clutch plate. In most cases is the engine speed is lower than the clutch speed, produced a shift abort.
As long as the change in the new position, to lift the clutch linkage to the semi when the engine speed is equal to or slightly higher than the clutch speed, can effectively prevent the setback. First, the clutch is lifted to a half clutch when a slight pause (this is a passive absorption speed difference); second, lift the clutch in the process of a press accelerator, appropriate to add some oil (which is active to reduce the speed difference). Although the process of lift off very quickly, but it will take some time, to this period of time the engine speed in the fall, so lift the clutch should be slightly ahead, don't just wait until the speed dropped in place to lift, or behind.
