Hydraulic valve mechanism for internal combustion engine

Abstract

The invention is a kind of rotation valve hydraulic distribution mechanism for internal combustion engine; it is used to replace the piston engine cylinder head part. There has in / off value, valve cover, oil piston in the distribution valve. The in / out air discharging valve rotates synchronously, it control the oil piston to move reciprocally through the in / out oil channel and channel in valve, promotes the discharging door to open or close. The rotation valve can rotate with a fixed angle when in brake, thus the compressed air in the cylinder generate resistance force to the piston, realizes the brake of engine.

Description

technical field [0001] The invention relates to an internal combustion engine valve valve mechanism. Background technique [0002] At present, the valve mechanism of the internal combustion engine all adopts the mechanical transmission device in which the cam directly or indirectly drives the valve. The cam drives the valve through the push rod and the rocker mechanism. In order to eliminate the gap during rigid transmission, some hydraulic tappets are added in the middle to eliminate the gap. However, due to the difficulty of processing, the complexity of the structure, the mechanical wear during operation, the influence of the camshaft rotation clearance, and the existence of radial runout, there is inevitably the noise of the valve impact, the valve is not closed tightly and the work is unreliable, and The advance angle and lag angle of the intake (exhaust) air are affected by the geometric shape and machining accuracy of the cam, and it is difficult to correct it conven...

AI Technical Summary

Problems solved by technology

However, because the rotating ball valve and shaft valve are directly impacted by the high-temperature and high-pressure gas of the internal combustion engine, the problem of easy damage and air leakage cannot be solved, so they cannot replace the existing cam-shaped gas distribution mechanism.

In order to prevent the vehicle from slipping and running off when the drum brakes, both at home and abroad have begun to consider using engine braking to cooperate with braking, and this technology is referred to as "JAKE". , needs to be realized by adding complex devices on the engine, the ratio of cost to target is large, and it is difficult to achieve the target, so it cannot be widely used

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