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Novel stepless variable valve lift mechanism

A valve lift, stepless technology, used in mechanical equipment, engine components, machines/engines, etc., can solve problems such as poor fuel economy and emissions, affect engine performance, and large pump gas losses, achieve simple structure, improve Engine performance, effect of reducing pumping loss

Active Publication Date: 2009-09-23
CHERY COMML VEHICLE ANHUI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional way that the engine adjusts the engine load by controlling the throttle opening will cause a large pumping loss, especially under partial load, the greater pumping loss will cause more damage to the engine power, fuel economy and emissions. For adverse effects that seriously affect the performance of the engine

Method used

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  • Novel stepless variable valve lift mechanism
  • Novel stepless variable valve lift mechanism
  • Novel stepless variable valve lift mechanism

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Embodiment Construction

[0033] 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:

[0034] As described in the accompanying drawings, the present invention is a novel stepless variable valve lift mechanism, including a control shaft 2, an oil hole 7e, a valve 13, a camshaft 16, a cam 17, a lower bearing seat 20, and an upper bearing seat 21 , bearing cap 22, gasket 23, bearing housing mounting bolts 24, bearing cap positioning bolts 25, strip plate 26, the new type stepless variable valve lift mechanism also includes eccentric wheel 1, primary control arm 3 , first-stage rocker roller 4, first-stage rocker arm 5, first-stage rocker shaft 6, second-stage control arm 7, first-stage rocker shaft mounting...

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Abstract

The invention provides a novel stepless variable valve lift mechanism applied to automotive internal combustion engines. A control shaft (2) is provided with one or a plurality of eccentric wheels (1) thereon. A first-level control arm (3) is sheathed on the eccentric wheel (1) and connected with a second-level control arm (7) at the other end. The second-level control arm (7) is arranged on a camshaft (16) which is connected with a first-level rocker arm (5). One end of a connecting arm (9) is connected with the first-level rocker arm and the other end thereof is connected with a second-level rocker arm (11) which joints with a third-level rocker arm (12) through a third-level rocker arm roller (14). The stepless variable valve lift mechanism is practical and feasible, can quickly respond and adjusts the load of an engine by controlling the valve lift amount, thus better meeting the requirements of different load working conditions and being capable of reducing the pumping loss of the engine and improving the properties of the engine.

Description

technical field [0001] The invention relates to the field of automobile internal combustion engines, and more specifically relates to a novel steplessly variable valve lift mechanism. Background technique [0002] For a traditional gasoline engine, the valve lift is fixed, and the engine load is adjusted by controlling the throttle opening. Such a control method causes the engine to have a large pumping loss, especially under partial load, the pumping loss is more serious, which will greatly affect the performance of the engine. Therefore, there are some ways to cancel the use of the throttle to control the gasoline engine load at present, and the continuously variable valve lift technology is one of them. This technology meets the requirements of the engine for different loads by adjusting the valve lift, the duration of valve opening and closing, and valve timing, so that the throttle valve is always within a large opening range, thereby effectively improving the power of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L13/00F01L1/18
Inventor 胡宏朱航张志福刘和义王建军
Owner CHERY COMML VEHICLE ANHUI
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