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Engine connecting rod mechanism with variable compression ratio

A technology of engine connecting rod and connecting rod structure, which is applied in the direction of engine control, machine/engine, connecting rod, etc., and can solve the problems of insufficient engine performance, knocking, large thermal load and mechanical load, etc.

Inactive Publication Date: 2014-09-24
王立华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The length of the connecting rod of the current engine is fixed, which is characterized in that the compression ratio of the engine cannot be changed through the connecting rod once it is designed. The thermal efficiency of the engine is low, and the corresponding comprehensive performance is poor, and when the load is high and the high speed is running, knocking is prone to occur and a large thermal load and mechanical load are generated, which shows that the current engine linkage mechanism needs to be improved.

Method used

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  • Engine connecting rod mechanism with variable compression ratio

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Embodiment Construction

[0005] After starting the engine, the engine control module (2) judges the engine speed through the signal of the engine speed sensor (1). Valve (7), cylinder body oil passage (5), crankshaft (9) oil passage, and check valve (11) enter the high-pressure chamber (12), so that the connecting rod inner upper cover (13) and the connecting rod inner lower cover (16 ) moves down along the guide groove of the outer assembly of the connecting rod body (10) and the connecting rod outer cover (17), and extends the working length of the connecting rod to increase the compression ratio of the engine, thereby increasing the low speed of the engine thermal efficiency and comprehensive performance, the one-way valve (11) is closed during the compression, work, and exhaust strokes so that the oil in the high-pressure chamber (12) cannot overflow, and the incompressibility of the oil makes the connecting rod of this invention The crankshaft is driven as a whole to rotate. During this process, ...

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Abstract

The invention discloses an engine connecting rod mechanism with a variable compression ratio. An existing engine connecting rod mechanism is characterized in that once the engine connecting rod mechanism is designed, the compression ratio of an engine cannot be changed through a connecting rod and the performance of the engine cannot be fully exerted due to a fixed compression ratio. According to the engine connecting rod mechanism with the variable compression ratio, the working length of the connecting rod is stretched out and drawn back through connecting rod structures of inner and outer combination bodies; the engine connecting rod mechanism is characterized in that the compression ratio of the engine can be changed and the performance of the engine can be fully exerted.

Description

technical field [0001] The invention is an engine connecting rod mechanism. Background technique [0002] The length of the connecting rod of the current engine is fixed, which is characterized in that the compression ratio of the engine cannot be changed through the connecting rod once it is designed. The thermal efficiency of the engine is low, and the corresponding overall performance is poor, and when the load is heavy and the high speed is running, it is prone to knocking and produces a large thermal load and mechanical load, which shows that the current engine linkage mechanism needs to be improved. Contents of the invention [0003] The purpose of the present invention is to change the compression ratio of the engine through the expansion and contraction of the working length of the connecting rod, so as to give full play to the performance of the engine. Improve the thermal efficiency and overall performance of the engine, and reduce the compression ratio of the e...

Claims

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Application Information

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IPC IPC(8): F16C7/06F02D15/00F02B75/32
Inventor 王立华
Owner 王立华
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