Engine compression and release type brake and braking method thereof

Abstract

The invention discloses an engine compression and release type brake and a braking method thereof. The brake comprises a brake rocker arm, a rocker arm shaft and a brake executing mechanism, wherein the brake rocker arm is installed on the rocker arm shaft through a rocker arm shaft hole, the brake executing mechanism is connected to the brake rocker arm, and the brake further comprises a brake oil way control mechanism. The brake oil way control mechanism communicates with a brake oil way in the brake rocker arm, the brake oil way control mechanism comprises a sliding block and an elastic reset part, and the sliding block can slide in the direction perpendicular to the axis of the rocker arm shaft so as to compress or release the elastic reset part. The sliding block selectively opens a brake oil inlet leading to a hydraulic cavity of the brake executing mechanism and closes an oil drainage port leading to the outside of the brake rocker arm or closes a rocker arm oil inlet and opens the oil drainage port. According to the engine compression and release type brake and the braking method thereof, the braking oil way control mechanism is arranged in a rocker arm body around the rocker arm shaft, the size of the whole braking rocker arm is reduced, the arrangement space of the whole machine is saved, and light weight of an automobile can be achieved easily.

Description

technical field [0001] The invention relates to the technical field of engine braking, in particular to an engine compression release brake and a braking method thereof. Background technique [0002] Long-distance commercial vehicles need to use the brakes frequently when driving on long and gentle slope roads. However, continuous use of the wheel brakes of the foot brakes to reduce the speed of the vehicle. Using the wheel brakes for a long time will cause the temperature of the brake pads to rise too fast, which will cause If the temperature of the brake pads is too high, the braking effect may decrease or even fail, which will easily cause major irreparable personal safety hazards and property losses. This is also one of the important reasons why major traffic accidents often occur on mountain roads with complex terrain. Therefore, it is necessary to equip commercial vehicles with auxiliary braking devices. [0003] Common auxiliary brakes include hydraulic retarders, en...

AI Technical Summary

Problems solved by technology

[0004] The current integrated engine brake rocker in the industry has a heavy structure, complex structure, slow response, and low reliability. The heavy structure is not conducive to the realization of lightweight vehicles

The current control of the compression release brake adopts the top-mounted compression release brake system, which is bulky and expensive; there is also a structure that uses a separate hydraulic control valve mechanism placed on the rocker arm. Increase the weight of the rocker body, and the structure is complex, which is not conducive to the realization of lightweight vehicles

Images