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Engine

An engine and driving mechanism technology, applied in the direction of engine control, machine/engine, mechanical equipment, etc., can solve the problems of complex engine structure and poor reliability, and achieve the effect of simple structure, low cost, and enlarged adjustable range

Inactive Publication Date: 2015-01-07
GREAT WALL MOTOR CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The invention provides an engine, which can solve the problems of complex structure and poor reliability of the current variable compression ratio engine

Method used

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Embodiment Construction

[0039] In order to solve the problems of complex structure and poor reliability of the current variable compression ratio engine, the invention provides an engine. On the cylinder head 100 of the engine, there is a piston mechanism independently arranged and communicated with the combustion chamber to realize the control of the engine compression ratio, so that the structure is simple, the cost is low, the compression ratio can be adjusted in a wider range, and the engine compression ratio can be changed at the same time. The controls are simpler. Moreover, the reliability of the engine is improved because there is no need to modify parts that need to withstand huge impacts, such as connecting rods and crankshafts inside the engine.

[0040] The engine of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] figure 1 It is a schematic structural diagram of an engine according to an embodiment of the present invention;...

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Abstract

The invention discloses an engine, relates to the technical field of engines, and can solve the problems of complex structure and weaker reliability of a traditional variable compression engine. The engine comprises a cylinder cover, a cylinder body, and a piston arranged in the cylinder body, wherein a combustion chamber is formed between the piston and the cylinder cover. The engine further comprises an auxiliary cylinder barrel, an auxiliary piston and a driving mechanism, wherein the auxiliary cylinder barrel is arranged on the cylinder cover in a penetrating manner, and is communicated with the combustion chamber; the auxiliary piston is sealed in the auxiliary cylinder barrel; the axis of the auxiliary piston is overlapped with the axis of the auxiliary cylinder barrel; the auxiliary piston can reciprocate in the auxiliary cylinder barrel in the axis direction; and the driving mechanism is arranged at one side, far from the combustion chamber, of the cylinder cover, is connected with the auxiliary piston, and provides power for the reciprocating motion of the auxiliary piston. The engine can be used for an automobile power system.

Description

technical field [0001] The invention relates to the field of engine design, in particular to an engine. Background technique [0002] Among the internal combustion engines, the gasoline engine has the advantages of low cost, high power per liter, light weight, and easy exhaust aftertreatment, and is widely used in passenger cars. However, the thermal efficiency of conventional gasoline engines is generally lower than that of modern vehicle diesel engines, especially under partial load conditions. The disadvantage of low thermal efficiency is more obvious, and it is also accompanied by energy waste and more serious exhaust pollution. In urban roads, most of the passenger cars work under partial load. [0003] Therefore, based on how to improve the engine economy and emission performance, the engine variable technology (Variable Technology) is proposed. Engine variable technology includes many kinds, such as variable valve timing, variable displacement, variable compression ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D15/04
Inventor 刘吉春权瑜
Owner GREAT WALL MOTOR CO LTD
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