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Engine valve rocker arm assembly with cylinder deactivation function

An engine valve and rocker arm assembly technology, applied in engine components, machines/engines, mechanical equipment, etc., can solve the problem of low valve service life, and achieve the effect of prolonging the service life, reducing the idle movement time, and improving the service life.

Active Publication Date: 2022-05-06
浙江宇太精工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

What it solves is the technical problem of low service life of the valve of the existing self-stop cylinder engine

Method used

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  • Engine valve rocker arm assembly with cylinder deactivation function
  • Engine valve rocker arm assembly with cylinder deactivation function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 and figure 2The shown engine valve rocker arm assembly with cylinder deactivation function includes a rocker arm 1 and a valve 2. One end of the rocker arm 1 is provided with a mounting hole 12, and the center line of the mounting hole 12 is opened when the rocker arm 1 is lifted. Perpendicular to the axis of the valve 2, a piston 4 is slidingly installed inside the mounting hole 12. The piston 4 has a cylindrical structure with one end open and one end closed. Outside and be provided with convex portion 41 on it, on convex portion 41, be fixed with piston like foot 31. The piston elephant foot 31 is provided with a through hole, and the piston elephant foot 31 is located inside the through hole and is tightly fitted and fixed with the inner wall of the through hole. The bottom of the piston elephant foot 31 presses on the valve 2 and can drive the displacement of the valve 2 by the swing of the rocker arm 1. A piston 4 is provided between the rocker...

Embodiment 2

[0036] This is the second embodiment of the driving structure of the present case. In this program, other structures are the same as in Embodiment 1, except that other driving structures in this technical solution include a cylinder, which is fixed on the rocker arm 1 and the cylinder is fixed on the rocker arm 1. The push rod is connected with the connecting portion 42 on the piston, and the push rod of the cylinder can drive the piston 4 to reciprocate by moving. The piston 4 drives the piston 4 to reciprocate in the form of a cylinder. This design can also realize the dislocation separation of the piston elephant foot 31 and the valve 2, and can achieve the same technical effect as the above-mentioned scheme.

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Abstract

The invention provides an engine valve rocker arm assembly with a cylinder deactivation function, and belongs to the technical field of engine assemblies. The problem that the service life of a valve of an existing automatic cylinder deactivation engine is short is solved. The engine comprises a valve, the valve rocker arm assembly comprises a rocker arm, the end of the rocker arm is connected with a telescopic movable part, a connecting piece is fixed to the movable part, the rocker arm is further provided with an elastic piece capable of enabling the movable part to have the contraction trend, and under the action of the elastic piece, when the rocker arm swings, the connecting piece can abut against the top of the valve downwards. The rocker arm is further provided with a driving structure capable of driving the movable part to stretch out relative to the rocker arm so that the connecting piece and the valve top can be staggered and separated. Under the driving of the driving structure, the position of the connecting piece originally abutting against the valve is changed to be staggered from the valve, the valve and the connecting piece are separately matched, friction between the valve and an engine cylinder body is reduced in the cylinder deactivation process, and the service life of the valve is greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of engine assemblies, and relates to a valve rocker arm assembly, in particular to an engine valve rocker arm assembly with a cylinder deactivation function. Background technique [0002] At present, 4-6 cylinder multi-cylinder engines are commonly used in vehicles and construction machinery engines. In order to meet the maximum power requirements of vehicles and construction machinery, the engine power is relatively large. The function of the multi-cylinder engine is to have multiple cylinders when the vehicle is fully loaded or overloaded. It can share the load, but when the vehicle is running with no load or light load or construction machinery with low load, all cylinders are also working at the same time, and the load rate of a single cylinder is reduced. Although the load rate is low, each cylinder of the engine is running normally to drive The crankshaft rotates, so the fuel consumption is still high,...

Claims

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Application Information

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IPC IPC(8): F01L1/18F01L13/00F01L9/10
CPCF01L1/18F01L13/0005F01L9/10F01L2013/001Y02T10/12
Inventor 姚淇元
Owner 浙江宇太精工股份有限公司