Variable-compression-ratio internal combustion engine

An internal combustion engine, compression ratio technology, applied in mechanical equipment, engine control, machine/engine, etc., can solve problems such as inability to assist piston cooling and lubrication, inability to achieve commercialization, and assist piston stuck, to increase efficiency and improve output Torque, effect of increased expansion stroke
CN109854370AInactive Publication Date: 2019-06-07HUNAN DAZE POWER TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN DAZE POWER TECH CO LTD
Publication Date
2019-06-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a variable-compression-ratio internal combustion engine which changes the compression ratio of the internal combustion engine by changing the volume of a combustion chamber. Thevariable-compression-ratio internal combustion engine comprises a gas feeding door, a gas exhausting door, an assisting piston, an assistant connecting rod, an assistant cylinder, an assistant crankshaft, an assistant crankshaft running and adjusting mechanism and other parts of the internal combustion engine, wherein the assistant crankshaft running and adjusting mechanism comprises a control motor, a chain wheel, an inner gear ring, an eccentric bearing, a planetary wheel and an assistant crankshaft gear; a crankshaft and the assistant crankshaft of the internal combustion engine rotates atspeed ratio of 2: 1 or 1: 1. When the assistant crankshaft running and adjusting mechanism does not adjust, the compression ratio of the internal combustion engine is unchanged. When a piston expandsand act, the assistant piston expands and acts, so that the internal combustion is capable of changing the expansion ratio.
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Description

technical field

[0001] The invention relates to an internal combustion engine technology, in particular to an internal combustion engine with variable compression ratio and variable expansion ratio. Background technique

[0002] There are many patents for variable compression ratio internal combustion engines. At present, there is only one type of variable compression ratio internal combustion engines that are actually commercially available: multi-link mechanism.

[0003] A US Patent (Patent No. 4,516,537) discloses a device for further changing the compression ratio of an internal combustion engine by adding a movable auxiliary piston in the combustion chamber to change the volume of the combustion chamber.

[0004] Other US patents 4987863, 5195469, 6427643, 6708655, 8418663, 7387103 and 7856952 etc. all have similar ideas.

[0005] This mechanism has many advantages, such as low cost, compact structure, etc., but its disadvantages are: no matter whether the auxiliary pi...

Claims

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