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An intensive locking multi-mode four-bar variable valve drive system

A locking, multi-mode technology, applied to engine components, machine/engine, valve details, etc., to achieve high cost performance and improve power performance

Inactive Publication Date: 2018-12-21
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • An intensive locking multi-mode four-bar variable valve drive system
  • An intensive locking multi-mode four-bar variable valve drive system
  • An intensive locking multi-mode four-bar variable valve drive system

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Embodiment Construction

[0030] The invention relates to an intensive locking multi-mode four-bar variable valve drive system. It includes a valve driving mechanism 2 and a camshaft phase adjustment mechanism 4 arranged on the camshaft 3 . It also includes a camshaft 3 , a mode transmission mechanism 5 , a mode selection mechanism 6 , a mode switching mechanism 7 , a valve control mechanism 8 , and a valve adjustment mechanism 9 . figure 1 It is a schematic diagram of an intensive locked-in multi-mode engine variable valve drive system with double-cam drive, double-input, single-output, single-switching, single-valve operation, and single-regulation. The camshaft 3 is provided with a first cam 301 and a second cam 302 . Since both the four-stroke driving mode and the four-stroke braking mode operate once every 720° of the crankshaft angle, the intake / exhaust valves are called the four-stroke mode; the two-stroke driving mode and the two-stroke braking mode both operate every 360° °The intake / exhaust...

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Abstract

The invention discloses an intensive locking multi-mode four-bar type variable-valve driving system and belongs to the field of engine valve driving. The system mainly comprises a cam shaft, a mode transmission mechanism, a mode alternative mechanism, mode switching mechanisms, a cam shaft phase position adjusting mechanism, valve adjusting mechanisms, valve control mechanisms and the like. The mode switching mechanism and the cam shaft phase position adjusting mechanism cooperate for use, switching of various modes such as the two-stroke driving mode, the four-stroke driving mode, the two-stroke braking mode and the four-stroke braking mode of an engine is achieved, the requirement for optimum ventilation of the engine under the different working conditions is finally met through cooperation with the valve control mechanisms, and the purpose of comprehensively improving the dynamic property, fuel economy, emission performance and braking safety of the engine is achieved. The intensive locking multi-mode four-bar type variable-valve driving system is simple and compact in structure and easy to arrange, hydraulic mechanisms or mechanical mechanisms and other different mechanisms can be adopted, and a scheme for meeting the different requirements for the flexibility, reliability, cost and the like of a variable valve is provided for a user for selection.

Description

technical field [0001] The invention relates to an intensive locking multi-mode four-bar variable valve driving system, which belongs to the field of engine valve driving. 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 ...

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 田华崔靖晨隆武强田江平王阳刘威杨添淏
Owner DALIAN UNIV OF TECH
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