Motorcycle engine piston cooling system and motorcycle engine

Abstract

The embodiment of the invention provides a motorcycle engine piston cooling system and a motorcycle engine, wherein the system comprises a main journal upper bearing seat, an oil spray valve assembly, a first spray nozzle and a second spray nozzle, wherein the main journal upper bearing seat is arranged on an upper crank case, the oil spray valve assembly is arranged on the main journal upper bearing seat, the main journal upper bearing seat is provided an oil passage for circulating engine oil, the oil spray valve assembly is provided with an oil inlet, the oil passage is connected with the oil inlet, the first spray nozzle and the second spray nozzle are respectively connected with the oil spray valve assembly, the engine oil in the oil spray valve assembly can respectively flows to the first spray nozzle and the second spray nozzle, the first spray nozzle corresponds to a first piston of the engine, and the second spray nozzle corresponds to a second piston of the engine. The motorcycle engine piston cooling system provided by the embodiment of the invention has the advantages that the arrangement structure is simplified, the engine oil pressure when the engine is at low speed is increased, and meanwhile, the self intensity of a connecting rod is enabled not to be influenced.

Description

technical field [0001] The invention relates to the technical field of engines, more specifically, to a motorcycle engine piston cooling system and a motorcycle engine. Background technique [0002] With the operation of the engine, the heat load on the piston of the engine will gradually increase; in order to effectively reduce the heat load on the piston and ensure the reliability of the piston, most engines are equipped with a piston cooling system at present, through which the piston cooling system can The piston is cooled to reduce the heat load of the piston. [0003] Due to the particularity of the twin-cylinder engine, two pistons are arranged in the twin-cylinder engine, so how to cool the two pistons in the twin-cylinder engine has become a problem of considerable concern. At present, the way to cool the pistons of twin-cylinder engines is to install a set of oil injection devices on the corresponding connecting rods of each piston of the twin-cylinder engines, an...

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a motorcycle engine piston cooling system and a motorcycle engine to solve the problem that the existing piston cooling system has complex structure, poor cooling effect, and the engine oil pressure is caused by spraying oil to the piston when running at low speed. It is low and affects the strength of the connecting rod itself

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