Vehicular hill-start parking automatic release unit

Abstract

The invention discloses a vehicular hill-start parking automatic release unit comprising a splined hub, a coupling, a one-way clutch, and a positioning block. Internal splines of the splined hub fit external splines of an output shaft of a transmission. The splined hub is axially fixed to the output shaft of the transmission through a snap ring. One end, facing to the coupling, of each external spline of the splined hub is chamfered. One end, facing to the splined hub, of each internal spline of the coupling is also chamfered. The chamfers of the internal splines and the chamfers of the external splines are fastened to each other. An inner end flange of the one-way clutch is fixedly connected with a transmission housing through bolts. The external splines of the one-way clutch fit the internal splines of the coupling. The one-way clutch is sleeved with the coupling. The vehicular hill-start parking automatic release unit is simple and reliable in structure, a critical point for driving force being larger than driving resistance can be obtained accurately, an automobile can be started with no delay or lag, and fast stable start is achieved.

Description

technical field [0001] The invention belongs to the technical field of vehicles, and in particular relates to an automatic release device for starting and parking on a half slope for a vehicle. Background technique [0002] When the traditional handbrake is started on a slope, it needs to rely on the driver to release the brake manually or skillfully cooperate with the accelerator and clutch to start comfortably, which makes the driver nervous and increases the physical exertion of the driver. The automatic release of the handbrake system came into being. pregnancy. Nowadays, more and more cars are equipped with electronic handbrake, which extends from the basic parking function to the automatic parking function AUTO HOLD. The automatic parking function is to measure the slope data through the slope sensor, and the controller will give accurate parking force according to the slope data. When starting, the parking control unit calculates the information provided by the clut...

AI Technical Summary

Problems solved by technology

[0003] However, ignoring changes in factors such as vehicle curb weight and road driving resistance, the accuracy of the calculation results is not high enough to determine whether the driving force is greater than the driving resistance through the information provided by numerous sensors, which makes the AUTO HOLD automatic parking function in the beginning. There is a period of adaptation when using it, especially when starting, when the accelerator is stepped on and the brake is not released in time, it is especially necessary to adapt

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