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Continuous variable valve mechanism driven by linear motor

A linear motor and valve mechanism technology, applied in the direction of machine/engine, mechanical equipment, engine components, etc., can solve problems such as difficulty in adapting to the working condition range of internal combustion engines, inability to realize continuous change of valve lift, etc., to achieve simple mechanism, maintain power and The effect of thermal efficiency and high control accuracy

Pending Publication Date: 2022-04-29
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional variable lift mechanism cannot achieve continuous change of valve lift, making it difficult to adapt to the wide range of working conditions of internal combustion engines

Method used

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  • Continuous variable valve mechanism driven by linear motor
  • Continuous variable valve mechanism driven by linear motor
  • Continuous variable valve mechanism driven by linear motor

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Embodiment Construction

[0016] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0017] Such as Figure 1 to Figure 6 Shown, the present invention consists of linear motor (1), bolt (2), slide block (3), positioning shaft (4), rocking arm (5), valve (6), spring (7), rocking arm shaft ( 8), roller (9) form.

[0018] In the present invention, unless otherwise stated, the engine refers to a four-stroke reciprocating piston internal combustion engine.

[0019] As shown in the figure, the central hole of the slider (3) is divided into two stages of stepped holes, which are respectively the first stepped hole and the second stepped hole from front to back, and the diameter of the second stepped hole is larger than that of the first stepped hole. The shape of the two-step hole can be matched with the shaft end of the linear motor (1) through its mating surface to determine the relative position of the motor and the slider, to ensure...

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PUM

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Abstract

The invention discloses a continuous variable valve mechanism driven by a linear motor, belongs to the technical field of piston reciprocating internal combustion engines, and provides a mechanism capable of achieving continuous variable valve lift and timing in a linear motor driving mode according to different requirements. According to the specific implementation mode, the valve lift and timing are changed by controlling the stroke size and the start-stop time of a motor shaft. The device is simple in structure and high in control precision, the requirements for air inflow under different working conditions are met by adjusting the valve lift in real time, the internal combustion engine keeps high power and heat efficiency within the wide rotating speed range, valve timing can be adjusted in a large range, the large-range positive and negative valve overlapping angle can be met, and the service life of the internal combustion engine is prolonged. And the adaptability to HCCI, SI, multi-mode switching and other engines is far better than that of the existing engine applying the traditional camshaft-driven variable valve technology.

Description

technical field [0001] The invention belongs to the technical field of piston reciprocating internal combustion engines, and provides a continuously variable valve lift mechanism driven by a linear motor. Background technique [0002] For the piston reciprocating internal combustion engine, it requires different intake air volumes to achieve good responsiveness under conditions such as different speeds. The conventional variable lift mechanism cannot realize the continuous change of the valve lift, which makes it difficult to adapt to the wide range of working conditions of the internal combustion engine. Its thermal efficiency is a function of compression ratio under ideal conditions, and higher compression ratio can bring higher efficiency. The continuously variable valve lift mechanism can flexibly adjust the intake air volume under different working conditions, thereby replacing the throttle valve to reduce pumping loss and improve the thermal efficiency of the internal...

Claims

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Application Information

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IPC IPC(8): F01L13/00
CPCF01L13/0015F01L2013/103
Inventor 苏岩郎茂春李小平解方喜金兆辉姜北平李盛成王永珍马家义
Owner JILIN UNIV
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