Engine with high compression ratio

Abstract

The invention discloses an engine with high compression ratio, which comprises a piston (3), a connecting rod (4) and a crankshaft, wherein the piston (3) is connected with the connecting rod (4); the connecting rod (4) is connected with a crankshaft connecting rod shaft neck (8) of the crankshaft through a connecting rod large end hole (5); and an eccentric structure is formed between the connecting rod large head hole (5) and the crankshaft connecting rod shaft neck (8). By adopting the technical scheme, the invention starts from improving the compression ratio of the engine, solves the problem of knock due to high compression ratio and thereby improves the overall efficiency; and the traditional connecting rod bearing bush is produced into an eccentric part, so that a piston hole center of the engine, the center of the connecting rod large end hole and the center of a crankshaft main shaft hole are not positioned on the same straight line, thereby forming a turning force arm, avoiding the shake and the impact caused by explosion, prolonging the service life of the engine, improving the thermal efficiency and having low cost, reliable performance and easy implementation.

Description

technical field [0001] The invention belongs to the technical field of engines, and relates to a power transmission structure of an automobile engine. More specifically, the invention relates to a high compression ratio engine. Background technique [0002] As we all know, whether it is a gasoline engine or a diesel engine, the working principle is the four-stroke working cycle of intake-compression-combustion work-exhaust to realize the repeated operation of the engine. When the engine inhales the fuel mixture gas, at the end of the compression stroke, due to the low ignition point substances mixed in the fuel, the gas mixture will automatically deflagrate before the spark plug ignites, and the mixture gas is easy to burn in advance somewhere in the combustion chamber, and the spark plug burns When the pressure waves meet, the pressure in the cylinder increases sharply, causing the cylinder to vibrate, which is called knocking. [0003] Knocking is extremely damaging to th...

AI Technical Summary

Problems solved by technology

As the engine is limited by knocking, the current gasoline engine compression ratio is basically below 10.5; the low compression ratio affects the thermal efficiency of the whole machine, and its economy and power are also affected; and for the current development status of fuel quality and engine compression ratio, it is very difficult It is difficult to continue to increase the compression ratio; the current design of the engine is to achieve a balance between the compression ratio and the fuel, combined with electronic control, to achieve the maximum compression ratio; that is, there are the following technical problems in the prior art: factors such as objective knocking, which cause the engine The compression ratio cannot be greatly improved, and only relying on auxiliary means has little effect

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