Motorcycle engine

Abstract

The invention discloses a motorcycle engine, wherein the outerwall of a cylinder end cover is provided with a wavy radiating rib, and the inner wall of the cylinder end cover is provided with an oil duct; a heat-dissipation through hole is arranged beside an air outlet of a cylinder end, and is connected to the upper side of a mounting hole of a spark plug; an oil injection hole is arranged on a right tank and oriented to the top of an inner cavity of a piston; a driving chain wheel is arranged on a left crankshaft of a crankshaft; a crankshaft connecting-rod piston mechanism drives a top cam chain distribution structure for transmission through the driving chain wheel; a camshaft is arranged on the cylinder end and fixed by a camshaft cover; an oil hole is arranged on the camshaft cover and corresponds to an opening of the oil duct on the inner wall of the cylinder end cover; swinging arms of an inlet valve and an exhaust valve are fixed inside shaft holes of the swinging arms of the inlet valve and the exhaust valve of the camshaft cover through swinging arm shafts of the inlet valve and the exhaust valve respectively; a check plate is arranged on the camshaft cover and fixed through the swinging arm shafts of the inlet valve and the exhaust valve; and the swinging arm shafts of the inlet valve and the exhaust valve contact an inlet cam and an exhaust cam on the camshaft respectively. Because the motorcycle engine reasonably improves the heat dissipation, lubrication, transmission and so on, the engine has the advantages of strong dynamic property, low vibration, low noise and oil saving.

Description

technical field [0001] The invention relates to a motorcycle engine. Background technique [0002] At present, motorcycle engines on the market can be divided into the following two types according to their gas distribution structure: [0003] The first type is the lower cam ejector type motorcycle engine, which is known as the CG motorcycle engine in the industry. CG motorcycle engine has a history of 60 to 70 years since it came out. It is an early motorcycle engine structure, accounting for a considerable proportion of the market. Its main advantages are large product output, sufficient parts supply chain, and as a Very mature model, its transmission mechanism has reliable stability. However, the engine's poor power performance, high noise, high vibration, high fuel consumption and other defects have been perplexing people for a long time. [0004] The second type is the overhead cam chain motorcycle engine, which is the well-known CB motorcycle engine in the industry....

AI Technical Summary

Problems solved by technology

However, the engine's poor power performance, high noise, high vibration, and high fuel consumption have always plagued people.

Although the high-speed performance has been improved, its performance such as power and torque has not been significantly improved, and vibration and fuel consumption have not been reduced.

In addition, due to the insufficient lubrication and heat dissipation system of the cam and other air distribution parts installed on the cylinder head, the compression ratio of this model is low, and the phenomenon of camshaft burning often occurs

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