Centralized exhaust cooling structure of outboard engine power assembly

Abstract

The invention discloses a centralized exhaust cooling structure of an outboard engine power assembly. The centralized exhaust cooling structure comprises an engine box body, an air cylinder head, a rectifier assembly and an exhaust pipe assembly, wherein the engine box body and the air cylinder head are each provided with a water cooling structure, the air cylinder head is provided with a centralized exhaust bin, a rectifier installation base and a plurality of exhaust valve bases, a cooling water path and an exhaust cavity are arranged in the exhaust bin, the rectifier assembly is mounted on the rectifier installation base, an exhaust passage is arranged at each exhaust valve seat, and a plurality of exhaust passages are converged into the exhaust cavity. According to the scheme, exhaust channels of the multi-cylinder engine are concentrated in the exhaust bin, unified exhaust is achieved through the exhaust pipe assembly, and the exhaust efficiency is improved; a water cooling structure of the engine is introduced into the structure of the centralized exhaust bin, so that an exhaust channel can be effectively cooled, and meanwhile, a rectifier can be cooled; and the exhaust pipe assembly with the optimized design can improve the exhaust effect and guarantee stable operation of an engine.

Description

technical field [0001] The invention relates to a centralized exhaust cooling structure for the power assembly of an outboard motor, belonging to the technical field of outboard motors. Background technique [0002] The powertrain of the outboard engine needs to design an exhaust structure to discharge the exhaust gas in the cylinder. Most of the existing methods are to set an independent exhaust pipeline at each exhaust valve of the multi-cylinder engine. The efficiency of the air way is low, and it is not conducive to exhaust heat dissipation; and the design of the exhaust pipeline is not reasonable enough, which affects the exhaust effect, and then affects the working stability of the engine of the outboard motor. Contents of the invention [0003] In view of the above-mentioned existing technical problems, the object of the present invention is to propose a centralized exhaust cooling structure for the power assembly of an outboard motor. [0004] The technical soluti...

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Problems solved by technology

[0002] The powertrain of the outboard engine needs to design an exhaust structure to discharge the exhaust gas in the cylinder. Most of the existing methods are to set an independent exhaust pipeline at each exhaust valve of the multi-cylinder engine. The efficiency of the air way is low, and it is not conducive to exhaust heat dissipation; and the design of the exhaust pipeline is not reasonable enough, which affects the exhaust effect, which in turn will affect the working stability of the engine of the outboard motor

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