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Engine braking improving device

An engine braking and braking column technology, applied in the directions of engine components, machines/engines, valve devices, etc., can solve the problems of increasing engine height and manufacturing cost, slow response, large inertia of braking system, etc., and reduce the volume. and weight, reducing requirements, reducing costs

Inactive Publication Date: 2013-05-15
SHANGHAI UNIVERSOON AUTOPARTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an improved device for engine braking, which solves the problem that the overhead mode of the engine braking system in the prior art increases the height of the engine and the technology of manufacturing cost At the same time, it is necessary to solve the technical problems of large inertia and slow response of the braking system existing in the hydraulically driven engine brake

Method used

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  • Engine braking improving device
  • Engine braking improving device
  • Engine braking improving device

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Embodiment 1

[0024] Such as figure 1 , figure 2 , image 3 with Figure 4As shown, an improved device 100 for engine braking of the present invention is composed of an exhaust valve control mechanism 2002, wherein the exhaust valve control mechanism 2002 is composed of a driving force input cam 2302, a cam follower 2352, a rocker Arm 2102 and rocker arm shaft 205 constitute, the middle part of described rocker arm 2102 is arranged on the rocker arm shaft 205, and described driving force input cam 2302 is arranged outside cam follower 2352, and the protruding part in driving force input cam 2302 The rotation circle of the cam follower 2352 intersects with the outer circumference of the cam follower 2352. A bias return spring 1982 is provided on the outside of the rocker arm 2102. A fluid channel 214 is provided in the rocker arm 2102. A fluid passage 214 is provided in the rocker arm shaft 205 along the axial direction. The channel 211 is provided with a radial hole 212 along a radius, ...

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Abstract

The invention discloses an engine braking improving device, which consists of an exhaust valve control mechanism that is composed of a driving force input wheel, a cam wheel driven wheel, a rocker and a rockshaft, wherein the driving force input wheel is arranged outside the cam wheel driven wheel; the other end of the rocker is provided with a horizontal driving piston, a vertical valve play regulating piston and a vertical braking plunger; a connecting rod of which the two ends have convex spherical surfaces is arranged between the driving piston and the braking plunger; the convex spherical surface of the upper end of the connecting rod is fit with the concave spherical surface of the driving piston; the convex spherical surface of the lower end of the connecting rod is fit with the concave spherical surface of the braking plunger; and a valve rod connecting piece of the exhaust valve is arranged below the braking plunger. The driving force input wheel transfers the engine power tothe rocker periodically, the switching between a braking mode and a normal operation mode can be realized by using the gap between an electromagnetic valve control rocker and the valve rod connectingpiece of the exhaust valve, the volume and weight of a brake are reduced, and high oil pressure and the leakage, deform and load fluctuation which are caused by the high oil pressure are avoided.

Description

Technical field: [0001] The invention relates to the mechanical field, in particular to an engine braking device, in particular to an improved engine braking device. Background technique: [0002] In the prior art, the method of using the internal combustion engine as a braking means is well known, and only the engine needs to be temporarily converted into a compressor. This conversion cuts off the fuel and opens the exhaust valve at or near the end of the engine piston compression stroke, allowing the compressed gas (air during braking) to be released. The energy absorbed by the engine during the compression stroke cannot be used The subsequent expansion stroke returns to the engine piston, but is dissipated through the engine's exhaust and cooling system. The end result is effective engine braking that slows the vehicle. [0003] A precedent for an engine brake is disclosed in US Patent No. 3,220,392 to Cummins, according to which an engine braking system has been manufa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L13/06
Inventor 杨洲王琳
Owner SHANGHAI UNIVERSOON AUTOPARTS CO LTD