Variable volume compression ratio engine

A volumetric compression and engine technology, applied in engine control, machine/engine, mechanical equipment, etc., can solve the problems of few results, difficult mass production, complex structure, etc. Effect

Inactive Publication Date: 2011-01-05
高伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the research on variable compression ratio engines is relatively common in foreign countries, but there are relatively few achievements that can realize the function of variable compression ratio, and the structure is complicated, so it is not easy to mass-produce

Method used

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] refer to figure 1 , Figure 7 Variable volume compression ratio engine, including ECU1, crankshaft 10, connecting rod 4 and piston 5, etc., the crankshaft 10 is covered with a crankshaft sleeve 20, the crankshaft sleeve 20 is composed of two crank sleeves 21 and a journal sleeve 22, One end of the connecting rod 4 is rotationally connected with the journal sleeve 22, and the other end is connected with the piston 5 through the piston pin. The two crank sleeves 21 on each set of crank sleeves 20 are installed in the control holes 31 on the two control sleeves 30 respectively. The two control sleeves 30 are installed in the crankcase chute and are fixedly connected with the lifter 42. The crankshaft 10 and the crank sleeve 20 form a variable compression ratio mechanism. The crankshaft 10 is fixed on the crankcase through the integral fixing frame...

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PUM

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Abstract

The invention discloses a variable volume compression ratio engine, comprising an ECU, a crankshaft, a connecting rod and a piston and the like, wherein the crankshaft is sheathed by a crankshaft sleeve composed of two crank sleeves and one shaft neck sleeve; one end of the connecting rod is ratably connected with the shaft neck sleeve and the other end is connected with the piston via a piston pin; two crank sleeves of each crankshaft sleeve group are respectively mounted in the operation holes on two operation sleeves; the crankshaft sleeve is controlled by adjusting the operation sleeves via an adjusting mechanism, to move downward or upward along the centerline of the cylinder to change the distance between the main journal and the shaft neck sleeve when the piston is at the upper dead center, thereby changing the compression height when the piston at the upper dead center to realize different compression ratios. In the technical scheme, the compression ratio of the engine can be controlled to satisfy the actual condition optimally according to gas intake, different load operating conditions and the compression ratios required by different fuels, in order to reach optimal fuel economy, dynamic property and discharge effects and realize wide selectivity of fuels of one engine.

Description

technical field [0001] The invention relates to the variable compression ratio technology of the engine, which can realize different compression ratios by controlling the different compression heights of the piston at the top dead center. Background technique [0002] With the increasingly stringent emission regulations and customers' requirements on engine economy, improving the engine's emission performance and fuel economy performance has become the biggest difficulty faced by traditional internal combustion engines. Now engines mainly use three-way catalysts to change emissions, and in-cylinder direct injection and variable valve technology are mainly used to improve fuel economy performance. To further reduce emissions, various new combustion modes are now available. These new combustion modes mainly pursue the formation of low-temperature combustion and homogeneous mixture, that is, require low charge temperature and uniform mixture, as well as lower compression ratio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D15/04
Inventor 高伟
Owner 高伟
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