A variable valve lift mechanism

A variable valve lift technology, applied to mechanical equipment, engine components, machines/engines, etc., can solve the problems of large space occupation, high cost, complex structure, etc., and achieve small space occupation, low cost, and compact structure Effect

Active Publication Date: 2022-02-18
DONGFENG COMML VEHICLE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present invention provides a variable valve lift mechanism to solve the technical problems of the variable valve lift mechanism in the related art, which are complicated in structure, high in cost and occupy a large space

Method used

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  • A variable valve lift mechanism
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Embodiment Construction

[0040]In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0041] The embodiment of the present invention provides a variable valve lift mechanism, which can solve the technical problems of the existing variable valve lift mechanism, such as complex structure, high cost and large space occupation.

[0042] see figure 1 As shown, a variable valve lift mechanism includes: a valve 1 , a swing arm assemb...

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Abstract

The invention discloses a variable valve lift mechanism, which relates to the technical field of engine valve control structures. The variable valve lift mechanism includes a valve, a swing arm assembly, a rocker arm shaft and a rocker arm. The swing arm assembly is connected with the air valve, and at least two clamping grooves are provided on the swing arm assembly. The rocker arm shaft and the rocker arm assembly are arranged at a fixed interval. The rocker arm is respectively movably connected with the rocker arm shaft and the rocker arm assembly, a slidable piston is arranged in the rocker arm, and the head of the piston can be inserted into any one of the locking grooves. When the rocker arm swings around the rocker arm axis, the piston drives the rocker arm assembly to move to drive the valve up and down, and when the piston head is inserted into different slots, the piston can be adjusted The displacements that drive the swing arm assembly to move so that the valves have different amounts of lift. The invention makes the valve have different lift amounts by matching the piston with different clamping grooves, and has compact structure, low cost and small occupied space.

Description

technical field [0001] The invention relates to the technical field of engine valve control structures, in particular to a variable valve lift mechanism. Background technique [0002] The valve lift of an automobile engine is fixed and invariable. The valve lift of an automobile engine—the design of the cam profile is a balanced choice for the engine under all working conditions, that is, there is only one cam profile of the camshaft. As a result, the lift cannot make the engine respond well in both high-speed and low-speed areas. As a result, the engine can neither get the best high-speed efficiency nor the best low-speed torque, but it can get full operating conditions. The most balanced performance. [0003] In view of the above situation, the application of variable valve lift (variable valve lift, VVL) technology was born. The variable valve lift technology changes the intake air volume of the engine by changing the valve lift when the engine is running, so that the en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L13/00
CPCF01L13/0015
Inventor 吴囿霖张芳万虎李庆华范雨
Owner DONGFENG COMML VEHICLE CO LTD
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