Engine cylinder head guard and engine assembly

Abstract

The invention discloses an engine cylinder head protective cover which comprises a shell (11). The shell (11) comprises an oil gas inlet and an oil return opening. The engine cylinder head protective cover further comprises a backflow preventing mechanism located at the oil return opening. The backflow preventing mechanism comprises at least one of an upper hood (12) and a lower extension portion, the upper hood (12) is arranged above the oil return opening in a covering mode, a space communicated with the oil return opening is formed in the upper hood (12), a seal structure can be formed on the top of the upper hood (12), and an oil groove which is formed in one side of the upper hood (12) and communicated with the oil return opening is formed in the shell (11). One end of the lower extension portion is communicated with the lower portion of the oil return opening, the other end of the lower extension portion is provided with an oil outlet end, and the cross sectional area of the oil outlet end is smaller than that of the oil return opening. The engine cylinder head protective cover can relieve the problem that oil consumption of an engine is too high, and the invention further provides an engine assembly.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an engine cylinder head shield. The invention also relates to an engine assembly. Background technique [0002] The role of the engine cylinder head guard of the car is to seal the crankcase and bear the breathing function of the crankcase. With the development of engine technology and the continuous strengthening of people's environmental awareness, the requirements for the amount of engine oil carried are becoming more and more stringent, which requires Separation of blow-by gases in the crankcase. [0003] In the traditional technology, an oil-gas inlet and an oil return port are arranged on the engine cylinder head guard, and an oil-gas separation device is integrated in the engine cylinder head guard, and the blow-by gas in the crankcase enters from the oil-gas inlet, and after the action of the oil-gas separation device, the The oil in the blow-by gas is separated from th...

AI Technical Summary

Problems solved by technology

[0004] However, since the oil return port is directly connected between the inner cavity of the engine cylinder head guard and the inner cavity of the crankcase, the blow-by gas in the crankcase enters the inner cavity of the engine cylinder cover through the oil return port, causing it to enter Too much oil in the engine cylinder head guard, making the engine's fuel consumption too high

[0005] Therefore, how to solve the problem that the fuel consumption of the engine is too high has become a technical problem to be solved urgently by those skilled in the art

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