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Engine variable valve lift mechanism capable of implementing vat destruction function and its control method

A valve lift and engine technology, applied in engine control, combustion engine, machine/engine, etc., can solve problems such as insufficient cylinder air intake, and achieve the effects of improving air flow, sufficient fuel combustion, and increasing impulse coefficient

Inactive Publication Date: 2009-02-18
JAPHL POWERTRAIN SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, variable valve timing technology has a good performance in improving engine power, emission performance, and fuel economy, but only changing the valve timing of the engine has great limitations in improving the overall performance of the engine. For example, Insufficient cylinder air intake

Method used

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  • Engine variable valve lift mechanism capable of implementing vat destruction function and its control method
  • Engine variable valve lift mechanism capable of implementing vat destruction function and its control method
  • Engine variable valve lift mechanism capable of implementing vat destruction function and its control method

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Embodiment Construction

[0028] Below with reference to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention, such as the shape, structure, mutual position and connection relationship between the various parts, the role and working principle of the various parts, etc., will be further described. Detailed instructions:

[0029] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the present invention is an engine variable valve lift mechanism capable of realizing the cylinder killing function, including a camshaft 4, a rocker shaft 6, a valve 9, a valve spring 10, a roller 14, a rocker arm 23, and a return spring 11. The camshaft 1 corresponding to each combustion chamber includes more than two cams 24 with different cam top heights; the number of rocker arms 23 corresponds to the number of cams 24; The arm shaft 8 is provided with a T-shaped pin 23, a short T-shaped loc...

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Abstract

The invention provides a variable valve lift mechanism and the control method thereof which relate to the engine air intake field and realize the cylinder fuel cut function; the rocker arm (23) of the variable valve lift mechanism is composed of a first rocker arm (12), a second rocker arm (5) and a third arm (13); the first rocker arm (12), the second rocker arm (5) and the third rocker arm (13) are contacted with a high rotational speed cam (2) through a roller (14), a low rotational speed cam (3) and a zero-lift cam (2); the control method of the variable valve lift mechanism includes that the opening and closing of a T-shaped lock pin (17) and a short T-shaped lock pin (20) are controlled to enable the high rotational speed cam (2), the zero-lift cam (2) and the low rotational speed cam (11) to be respectively applicable to the high load and low load working conditions. The variable valve lift mechanism which adopts the technical proposal can satisfy the low rotational speed situation, high rotational speed situation and the cylinder fuel cut function in a certain situation during the operation process of the variable valve lift mechanism; thereby, the fuel energy utilization rate is improved.

Description

technical field [0001] The present invention relates to the field of automobile engine intake system, more specifically, relates to an engine variable valve lift mechanism capable of realizing cylinder killing function, and the present invention also relates to an engine variable valve lift mechanism capable of realizing cylinder killing function The agency's method of control. Background technique [0002] With the increasing shortage of oil resources, it is more urgent to improve the engine power performance and fuel utilization rate. The traditional engine valve lift is fixed, but the engine has different requirements for the intake volume of combustible gas at different speeds. The speed and low load only need a small amount of intake air to meet the needs of the engine power output. For multi-cylinder engines, it is possible to stop part of the cylinders when necessary to reduce fuel consumption while meeting the power output requirements. High speed, High load require...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D13/06
CPCY02T10/18Y02T10/12
Inventor 满红军
Owner JAPHL POWERTRAIN SYST
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