Multi-connecting-rod eccentric circle type engine variable-compression-ratio mechanism
A technology of variable compression ratio and eccentric circle, which is applied in the direction of engine control, machine/engine, connecting rod, etc., can solve the problems of complex structure of parts, difficulty of processing and manufacturing, and increase of cost, so as to achieve good power performance, improve stability, reduce The effect on fuel consumption
Inactive Publication Date: 2021-07-13
LIAONING TECHNICAL UNIVERSITY
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Problems solved by technology
[0010] 3. Make the structure of the parts more complex, greatly increase the difficulty and cost of processing and manufacturing
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[0029] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings. As a part of this specification, the principles of the present invention will be described through examples. Other aspects, features and advantages of the present invention will become clear through the detailed description. In the referenced drawings, the same reference numerals are used for the same or similar components in different drawings.
[0030] Such as Figure 1-6 As shown, the multi-link eccentric circular engine variable compression ratio mechanism provided by the present invention includes an eccentric member 1, a first connecting rod 2, a second connecting rod 3, a piston rod 4, a support frame 5, a shock absorbing spring 7, and a spring base 8, block cover 9. The eccentric part 1 and the support frame 5 form an adjustment mechanism, which is mainly used to control the change of the effective length of the connecting rods a...
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The invention discloses a multi-connecting-rod eccentric circle type engine variable-compression-ratio mechanism. The mechanism comprises an eccentric piece which is provided with a crankshaft bearing hole and connected with a crankshaft, a first connecting rod which is provided with an eccentric piece bearing hole, a second connecting rod pin bearing hole and a supporting frame fixing bolt hole, a second connecting rod which is provided with two pin bearing holes and is connected with the first connecting rod and a piston rod, the piston rod and a piston; a supporting frame is fixed to the first connecting rod through the supporting frame fixing bolt hole; a sliding groove is formed in a rod body of the second connecting rod and allows the supporting frame to slide; a pin bearing hole is formed in the end, connected with the second connecting rod, of the piston rod, and an axial piston connecting hole is formed in the other end; a trapezoidal threaded hole connected with the piston rod is formed in the bottom of the piston. According to the mechanism, the cost for producing a reciprocating piston type internal combustion engine can be reduced, and the engine has good dynamic property and fuel economy under different load working conditions by changing the compression ratio of the engine.
Description
technical field [0001] The invention belongs to the technical field of engines, and in particular relates to a variable compression ratio mechanism of a multi-link eccentric circular engine. Background technique [0002] The compression ratio is an important parameter of the engine, which indicates the degree of compression of the gas, and refers to the ratio of the cylinder volume when the piston moves to the bottom dead center to the cylinder volume when the piston moves to the top dead center. Increasing the compression ratio will increase the thermal efficiency of the engine and achieve the purpose of energy saving and emission reduction. [0003] Due to its good mobility, high thermal efficiency, wide range of power and speed, and long life, the internal combustion engine has achieved good performance in various fields. However, due to the increasingly severe energy crisis, the internal combustion engine must be changed. In order to better respond to energy issues and...
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IPC IPC(8): F02B75/04F02D15/00F16C7/06
CPCF02B75/045F02D15/00F16C7/06F02D2700/03
Inventor 刘克铭蔡琳滢姜东王宝来袁鑫李泓焘戴羽森
Owner LIAONING TECHNICAL UNIVERSITY