Air valve bridge and engine comprising air valve bridge

A valve bridge and engine technology, which is applied to engine components, machines/engines, mechanical equipment, etc., can solve the problems of difficult layout of sealing devices, collision and wear between sealing devices and valve bridges, and difficult layout.

Active Publication Date: 2016-11-09
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the current valve bridge needs to add a separate sealing device for the oil drain hole, which is likely to cause collision wear between the sealing device and the valve bridge, and the arrangement is difficult, which affects the reliability of th

Method used

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  • Air valve bridge and engine comprising air valve bridge
  • Air valve bridge and engine comprising air valve bridge
  • Air valve bridge and engine comprising air valve bridge

Examples

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Embodiment Construction

[0029] This specific embodiment provides a valve bridge, which can avoid the technical problems of collision wear between the sealing device and the valve bridge, and difficulty in arranging the sealing device. The specific embodiment also provides an engine including the above-mentioned valve bridge.

[0030] Hereinafter, an embodiment will be described with reference to the drawings. In addition, the examples shown below do not limit the content of the invention described in the claims in any way. In addition, all the contents of the configurations shown in the following embodiments are not limited to be essential to the solutions of the invention described in the claims.

[0031] Please refer to figure 2 with image 3 , the valve bridge provided by this embodiment includes a valve bridge body 11, and the valve bridge body 11 is provided with a main piston 12 for controlling the opening or closing of the valves. Of course, in order to simultaneously control multiple valv...

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Abstract

The invention discloses an air valve bridge and an engine comprising the air valve bridge. The air valve bridge comprises an air valve bridge body which is provided with a main piston cavity, an executing pin installing cavity, a main piston arranged in the main piston cavity, and an executing pin arranged in the executing pin installing cavity; an elastic piece is arranged between the executing pin and the executing pin installing cavity; under the action of the elastic force of the elastic piece, the lower end of the executing pin stretches out of the executing pin installing cavity; the air valve bridge body is provided with a first oil drainage channel communicating with the main piston cavity; and a second oil drainage channel with one end communicating with an oil returning cavity of the engine is formed in the executing pin. Due to the arrangement, the air valve bridge is provided and can solve the technical problems that collision and abrasion happen to a sealing device and the air valve bridge, and the arrangement of the sealing device is difficult.

Description

technical field [0001] The invention relates to the technical field of engine accessories, more specifically, to a valve bridge and an engine including the valve bridge. Background technique [0002] When the car is going down a long slope and the driver activates the engine braking device, the oil supply system stops supplying oil, and at the same time, when the engine is close to the top dead center in the compression stroke, the exhaust valve is opened by a small lift under the drive of the engine braking device. (1 ~ 2mm), the compressed high-pressure gas in the cylinder is released quickly, and the pressure in the cylinder decreases rapidly, so in the next power stroke, the engine basically does not work externally. [0003] Among them, the valve bridge is installed on the top of the valve with the same name, which is used to transmit the force of the rocker arm to ensure that the valve with the same name is opened at the same time. When the engine is working, along wi...

Claims

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Application Information

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IPC IPC(8): F01L1/26
CPCF01L1/26F01L13/06F01L13/065F01L1/24
Inventor 王刚唐建明
Owner WEICHAI POWER CO LTD
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