Variable valve structure of internal combustion engine

Abstract

The invention discloses a variable valve structure of an internal combustion engine, and belongs to the field of internal combustion engines. The variable valve structure comprises valve assemblies, springs, connectors and a first rotating shaft, a plurality of groups of valve assemblies are arranged, the number of the valve assemblies in each group is two, the first rotating shaft is sleeved with a plurality of cam groups, six first cams are arranged in each cam set, the cam sets are located above the valve assemblies, and each valve assembly comprises a valve rod, the spring, the connector, a control box and a hydraulic tappet. According to the variable valve structure of the internal combustion engine, the height of a movable block can be higher than that of a fixed block through adjusting devices in the connectors, and then the opening degree of the valve of the internal combustion engine can be controlled under the cooperation of the first cams and the movable block, so that air distribution of the internal combustion engine is more stable, and energy waste is reduced.

Description

technical field [0001] The invention relates to the field of internal combustion engines, in particular to a variable valve structure of the internal combustion engine. Background technique [0002] The function of the valve is to be responsible for inputting air into the engine and discharging the exhaust gas after combustion. From the structure of the engine, it is divided into intake valve and exhaust valve. The role of the intake valve is to draw air into the engine and mix it with fuel for combustion; the role of the exhaust valve is to discharge the burned exhaust gas and dissipate heat. Traditional engine valves do not have an adjustable function, and the opening size of the valves is fixed, and the size of the valves cannot be adjusted, which will lead to unstable gas distribution of the engine and cause energy waves. [0003] The Chinese patent discloses a variable valve lift structure (authorized notification number CN208669372U). The modified patent drives the c...

AI Technical Summary

Problems solved by technology

Traditional engine valves do not have an adjustable function, and the opening size of the valve is fixed, and the size of the valve cannot be adjusted, which will lead to unstable gas distribution of the engine and cause energy waves.

[0003] The Chinese patent discloses a variable valve lift structure (authorized notification number CN208669372U). The modified patent drives the crank through the driving device, and then the crank drives the swing bar to rotate, and then the swing bar drives the rocker arm to open different valve heights, but The patent requires the addition of a new drive to the engine, which places a heavy burden on the engine

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