Engine with variable compression ratio

Abstract

The invention discloses an energy-saving engine. The engine comprises a cylinder body, a cylinder cover, a cylinder head cover, a cylinder barrel, a crankshaft, a connecting rod and a piston, and is characterized in that a flat bar is arranged at the top end of the cylinder cover; a cam is arranged above the flat bar and fixedly connected onto a cam shaft; oblique insection and a sliding wheel matched with the oblique insection are arranged at one end of the cam shaft; the sliding wheel is driven by a crankshaft gear at one end of the crankshaft through a transmission mechanism, and a relative angle between the cam and the crankshaft can be changed by the transmission mechanism; the upper edge periphery of the cylinder cover and the lower edge periphery of the cylinder head cover are connected through an upper rubber sleeve, and the lower edge periphery of the cylinder cover and the upper edge periphery of the cylinder body are connected through a lower rubber sleeve; and two pins are symmetrically arranged on the left lower surface and the right lower surface of the cylinder cover, sleeves glidingly matched with the pins are arranged on the left upper surface and the right upper surface of the cylinder body, and springs are arranged on the outer sides of the pins and the sleeves in a sleeving manner. According to the energy-saving engine, the compression ratio of the engine can be changed, the structure is simple, the control is facilitated, engine power can be effectively improved, and fuel economy is improved.

Description

technical field [0001] The invention relates to an engine, especially an engine with variable compression ratio. Background technique [0002] The compression ratio of traditional engines is generally fixed. In recent years, foreign countries have begun to shift the direction of research to engines with variable compression ratios to meet the different requirements of engines for compression ratios under different operating conditions. When the engines are under medium and low loads, In order to improve the emission level of the engine, it is necessary to use a larger compression ratio, and to use a higher boost pressure at high loads, it is necessary to reduce the compression ratio, which can improve the fuel efficiency and output power of the engine. At present, domestic research has begun to Engines with variable compression ratio, but most of them have complex structures and high processing difficulties, which are not convenient for mass production. Contents of the inv...

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Problems solved by technology

[0002] The compression ratio of traditional engines is generally fixed. In recent years, foreign countries have begun to shift the direction of research to engines with variable compression ratios to meet the different requirements of engines for compression ratios under different operating conditions. When the engines are under medium and low loads, In order to improve the emission level of the engine, it is necessary to use a larger compression ratio, and to use a higher boost pressure at high loads, it is necessary to reduce the compression ratio, which can improve the fuel efficiency and output power of the engine. At present, domestic research has begun to Engines with variable compression ratio, but most of them have complex structures and high processing difficulties, which are not convenient for mass production

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