Novel valve mechanism for engine

Abstract

The invention discloses a novel valve mechanism for an engine, which comprises a cylinder body, a piston, a crankshaft, a connecting rod and a sparking plug, and the structure of an air inlet valve shaft and an exhaust valve shaft is adopted; the air inlet valve shaft and the exhaust valve shaft are provided with rotary valves, an avoiding notch as an airflow passage is arranged on one side of the rotary valves, and a time sequence of the air inlet rotary valve and the exhaust port rotary valve is respectively controlled by a drive mechanism, such that the air inlet rotary valve and the exhaust port rotary valve are periodically ventilated or closed. According to the novel valve mechanism, a plurality of hollow cylindrical arc surfaces of one hollow shaft are provided with openings as the air inlet and exhaust port, metal sealing rings are arranged on both sides of the rotary valves, metal sealing strips fitted with a cylindrical valve are arranged on left and right sides of a valve seat, and air inlet and exhaust passages are regularly opened and closed according to a firing order of the engine and working cycle requirements of respective cylinders, such that fresh air enters the cylinder timely, and exhaust gas is exhausted from the cylinder timely.

Description

technical field [0001] The invention belongs to the technical field of gas distribution systems of internal combustion engines, and in particular relates to a novel engine gas distribution mechanism with simplified structure and valve cooling function. Background technique [0002] The modern automobile engine valve train consists of two parts: the valve group and the valve train group. The valve group includes valves, valve seats, valve guides, valve springs, spring seats and lock plates, etc.; the valve train group includes timing gears, timing chains (belts), camshafts, tappets, push rods, adjustment screws, rocker arms , rocker shaft, etc. Its function is to open and close the intake and exhaust valves regularly according to the requirements of the engine ignition sequence and the working cycle of each cylinder, so that fresh gas can enter the cylinder in time, and exhaust gas can be discharged from the cylinder in time. [0003] Existing problems: 1. The intake and ex...

AI Technical Summary

Problems solved by technology

[0003] Existing problems: 1. The intake and exhaust efficiency is affected by the structure of the intake and exhaust valves, and the maximum intake and exhaust volume cannot be reached within the effective time

High temperature is also prone to knocking, which affects the further improvement of the engine compression ratio; 5. There are many transmission parts required for valve opening and closing, and its response speed affects the further increase of engine speed; 6. More valve group components increase the volume of the engine , weight; 7. When the timing gear is misaligned, it is easy to cause damage to the valve and piston

Images