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A compact locking multi-mode variable valve drive system

A drive system, locking technology, applied in the direction of engine components, machines/engines, valve details, etc., to achieve the effect of good practical prospects, improved power, and compact structure

Inactive Publication Date: 2019-04-09
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no variable valve drive system that can meet the above requirements at the same time, so the development of a multi-mode variable valve drive system is imminent

Method used

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  • A compact locking multi-mode variable valve drive system
  • A compact locking multi-mode variable valve drive system
  • A compact locking multi-mode variable valve drive system

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Embodiment Construction

[0034] The present invention relates to this compact locking multi-mode variable valve drive system, which includes a valve drive mechanism, a camshaft 3, a valve control mechanism, a valve adjustment lever, a mode input mechanism, a mode output mechanism, and a mode switching mechanism. figure 1It is a schematic diagram of a compact lock-type multi-mode variable valve drive system with dual-cam drive, dual-input, single-output, and double-switching single-valve operation. The valve driving mechanism includes a first valve driving mechanism 201 . The camshaft 3 is provided with a first cam 301 and a second cam 302 . The first cam 301 has one protrusion or two protrusions, and the second cam 302 has one protrusion or two protrusions. There are two protruding cams with the same profiles and a phase difference of 180° camshaft rotation angle. The valve control mechanism includes a first valve control mechanism 501 and a second valve control mechanism 502 . The valve adjustment...

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PUM

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Abstract

The invention provides a compact locking type multi-mode variable valve driving system and belongs to the field of engine valve actuation. The system mainly comprises a cam shaft, a valve regulating lever, a valve control mechanism, a mode input mechanism, a mode output mechanism, a mode switching mechanism and the like. By means of the mode switching mechanism, switching of an engine among a two-stroke driving mode, a four-stroke driving mode, a two-stroke brake mode, a four-stroke brake mode and other various modes can be achieved, furthermore, the mode switching mechanism is matched with the valve control mechanism in use so that the requirement of the engine for optimal ventilation under different working conditions can be met, and the aim of comprehensively improving the dynamic property, fuel economy, emission performance and brake safety of the engine is achieved. The system is simple and compact in structure, easy to distribute and good in practical prospects.

Description

technical field [0001] The invention relates to a compact locking multi-mode variable valve drive system, which belongs to the field of engine valve drive. Background technique [0002] With the increasingly serious energy and environmental issues, and people's focus on driving and safety of vehicles, future engines need to comprehensively consider power, economy, emissions and safety on the premise of meeting emission standards. This requires optimizing engine performance over the full range of driving and braking conditions. At present, technologies such as variable valve, variable stroke number, cylinder deactivation, auxiliary braking, new combustion mode, variable compression ratio, variable EGR and other technologies that have attracted much attention only affect the performance of the engine in a small range of operating conditions. Make improvements. For example, the existing variable valve technology is only applied to the driving condition of the fixed stroke num...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L13/06F01L13/00F01L1/344
CPCF01L1/34413F01L13/00F01L13/0036F01L13/06F01L2710/003F01L2760/00
Inventor 崔靖晨隆武强冯立岩田华王阳刘威杨添淏
Owner DALIAN UNIV OF TECH
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