Camshaft valve mechanism, engine and vehicle

Abstract

The invention discloses a camshaft valve timing mechanism, an engine and a vehicle. The camshaft valve timing mechanism comprises a camshaft assembly. The camshaft assembly comprises a shaft body. The camshaft valve timing mechanism further comprises an eccentric weight. The eccentric weight is installed on the shaft body in the mode that the eccentric weight can generate acting force for suppressing vibration of the engine when rotating along with the shaft body synchronously. The integrated camshaft assembly not only has the function of driving an air valve but also has the function of generating acting force for suppressing vibration of the engine, the number of parts is decreased, the arrangement space on an air cylinder cover is larger, and the included angle arrangement of the air valve is reduced advantageously; and in addition, the distance between the camshaft and a crankshaft is decreased, the overall structure is more compact, and the engine can be arranged on a finished automobile advantageously.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a camshaft gas distribution mechanism, an engine and a vehicle. Background technique [0002] When the engine was in working condition, the piston reciprocated linearly between the top dead center and the bottom dead center (hereinafter referred to as "top and bottom dead center"), and the moving speed of the piston was very fast and very uneven. At the top and bottom dead centers, the speed of the piston is zero, but at the middle position between the top and bottom dead centers, the speed reaches the highest. Since the piston performs repeated high-speed linear motions in the cylinder, a large inertial force will inevitably be generated on the piston, piston pin and connecting rod. Although counterweights on the linkage effectively balance these inertial forces, only one part of the moving mass is involved in linear motion and the other part is involved in rotation. There...

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Problems solved by technology

[0004] However, the above-mentioned camshaft is far away from the center line of the crankshaft, so the timing transmission mechanism is relatively complicated, and it is also difficult to disassemble and assemble the cylinder head. It also increases the overall height of the engine, and the layout is not compact, and it is unfavorable to the overall layout of the vehicle.

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