Cylinder head assembly of motorcycle engine

Abstract

The invention discloses a cylinder head assembly of a motorcycle engine. The cylinder head assembly of the motorcycle engine comprises a cylinder head body, a rocker arm bracket and a camshaft, wherein the cylinder head body and the rocker arm support are respectively subjected to casting molding; the rocker arm bracket is fixedly mounted on the upper surface of a cylinder head through bolts; corresponding arc-shaped grooves are respectively formed in the upper surface of the cylinder head body and the lower surface of the rocker arm bracket; and the camshaft is mounted in a circular channel formed by the upper arc-shaped groove and the lower arc-shaped groove in a surrounding manner and is transversely arranged just above a chain cavity. Water cavities are formed in the cylinder head body and are respectively positioned above two combustion chambers, a plurality of water inlets are formed in the lower surface of the cylinder head body and are positioned in the periphery of each combustion chamber, and a water outlet is formed in the middle of the side surface of the cylinder head body. The cylinder head assembly of the motorcycle engine not only is compact in structure and can be conveniently arranged on a whole motorcycle, but also has good heat dissipation effect; and through a separate casting reassembling mode, the cylinder head is easy to machine, and meanwhile, mounting of the camshaft is also facilitated.

Description

technical field [0001] The invention relates to a motorcycle engine, in particular to the structural improvement of a cylinder head of a motorcycle double-cylinder engine, and belongs to the technical field of motorcycle cylinder heads. Background technique [0002] The cylinder head is one of the very important key parts of the motorcycle engine. Its function is to form the working volume of the cylinder and guide the movement of the piston. It works under the conditions of high temperature, high pressure, poor lubrication, alternating load and corrosion. The cylinder head is provided with intake and exhaust passages for intake and exhaust. At the same time, the cylinder head is also equipped with a rocker arm bracket for installing a rocker arm and a spark plug for ignition. In order to increase the cooling area and ensure sufficient heat dissipation, many heat sinks are cast on its outer surface, and there are a large number of supporting ribs. For the cylinder head of a...

AI Technical Summary

Problems solved by technology

For the cylinder head of a large-displacement twin-cylinder engine, the engine is required to be compact so as to facilitate the arrangement of the engine on the frame. Increase the overall size of the engine, which is unfavorable to the installation arrangement

If the size of the heat sink is reduced, although it is helpful for the compactness of the structure, the heat dissipation will be affected

At the same time, the existing twin-cylinder engine cylinder head structure is relatively complex, and casting is very difficult

Because it is a twin-cylinder engine, the camshaft is relatively long, which also brings difficulties to the installation of the camshaft

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