Cam driving type four stroke engine

A technology of four-stroke engine and cam drive, which is applied in the direction of variable displacement engine, reciprocating piston engine, machine/engine, etc., and can solve the constraints of engine power, economy and emission indicators, combustion temperature and pressure reduction, internal combustion engine work Roughness and other problems, to achieve good power, maximum pressure reduction, power increase effect

Inactive Publication Date: 2005-08-10
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the displacement of the unit crank angle of the piston near the top and bottom dead centers is very small, this is one of the factors that cause the internal combustion engine to work rough in the early stage of combustion; the piston descends relatively quickly in the late combustion period, so that the volume of the combustion chamber increases rapidly , causing the temperature and pressure of combustion to drop rapidly, and it is easy to cause insufficient combustion
Thereby restricting the further improvement of the power, economy and emission indicators of the engine

Method used

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  • Cam driving type four stroke engine
  • Cam driving type four stroke engine
  • Cam driving type four stroke engine

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Embodiment Construction

[0013] exist figure 1 , 2 In the shown embodiment, the fixed parts, valve train, fuel system, lubricating oil system, cooling system, starting system and intake and exhaust system of the cam drive type four-stroke engine are basically the same as the traditional four-stroke engine. The fixed part is composed of a machine base, a body, a cylinder head and a cylinder liner, and constitutes the skeleton of an engine. The moving part mainly includes a piston 1, a piston rod 2, an asymmetric cam 4 and a main shaft 5, the piston 1 and the piston rod 2 are connected together with fastening bolts, and the asymmetric cam 4 is fixed on the main shaft 5. The asymmetric cam 4 is provided with an asymmetric cam groove 4c, the outer edge of the asymmetric cam groove 4c is an asymmetric inner cam 4a, and the inner edge is an asymmetric outer cam 4b; The column 3 is inserted in the asymmetric cam groove 4c; the pin 3 is equipped with needle bearings 6, 7, the needle bearing 6 is in contact ...

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Abstract

The present invention relates to a cam-operated four-stroke engine, belonging to the field of structure and combustion technology of reciprocating internal combustion engine. Said engine adopts an symmetrical cam to transfer the work applied by piston to the main shaft, and the mani shaft is rotated for every one circle, the piston can apply work once, and the characteristics of motion of said piston is completely dependent on the moulded line of said asymmetrical be easily controlled. Said can drive structure not only is applicable to diesel engine and carburetor engine, but also is applicable to engine using various fuels.

Description

technical field [0001] The invention relates to a cam-driven four-stroke engine, which belongs to the field of structure and combustion of reciprocating internal combustion engines. Background technique [0002] As everyone knows, the existing reciprocating internal combustion engine is driven by a crank-link mechanism, and its characteristic is that the law of piston motion is a function of the crank angle. This piston motion law determined by the crank-connecting rod mechanism restricts the performance of the internal combustion engine to a certain extent. Because the displacement of the unit crank angle of the piston near the top and bottom dead centers is very small, this is one of the factors that cause the internal combustion engine to work rough in the early stage of combustion; the piston descends relatively quickly in the late combustion period, so that the volume of the combustion chamber increases rapidly , causing the temperature and pressure of combustion to dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01B9/06F02B75/32
Inventor 隆武强冷先银冯立岩杜宝国田江平陈雷
Owner DALIAN UNIV OF TECH
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