Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Rocker arm integrated type brake device of four-stroke internal combustion engine

A technology of internal combustion engine and braking device, which is applied in the direction of engine control, engine components, machine/engine, etc., to achieve the effects of simplifying structure, improving accuracy and operability, and improving balance

Inactive Publication Date: 2009-01-21
俞黎明
View PDF1 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Aiming at the above technical problems, the technical problem to be solved by the present invention is to further improve the structure of the gap compensation mechanism and control and check valve mechanism on the rocker arm, so as to eliminate and weaken the above-mentioned various unfavorable factors, and propose a reliable and simple Four-stroke internal combustion engine rocker integrated brake device

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rocker arm integrated type brake device of four-stroke internal combustion engine
  • Rocker arm integrated type brake device of four-stroke internal combustion engine
  • Rocker arm integrated type brake device of four-stroke internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] specific implementation plan

[0026] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] figure 1 Shown is an exhaust gas distribution mechanism 1 of a four-stroke engine, which is composed of an exhaust cam 2, an exhaust rocker arm 3, an exhaust valve bridge 4 and an exhaust valve 5. Exhaust rocker arm 3 is installed on the rocker arm shaft, and the rocker arm shaft is hollow, and wherein is the longitudinal oil passage. A follower is installed on one end of the exhaust rocker arm 3, which cooperates with the exhaust cam 2 installed on the crankshaft, and there are two braking protrusions 10 on the exhaust cam. The other end of the exhaust rocker arm 3 cooperates with the exhaust valve, so that the rocker arm drives the exhaust valve to work when the cam rotates. Said exhaust valve has two, and the upper end of the exhaust valve rod is against the exhaust valve bridge 4 two ends. O...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a rocker-integrating type braking device for four-stroke internal combustion engines. Control and check valve mechanisms (8 and 9) are integrated at one end of a valve of a rocker (3) and a clearance compensation mechanism (11); a plunger of the clearance compensation mechanism is always in contact with the upper end of an exhaust valve (5); a braking protrusion (10) is arranged on the molded line of an exhaust cam (2) of an engine; the control and check valve mechanisms are coaxial with the clearance compensation mechanism, and the control and check valve mechanisms and the exhaust valve are coaxially arranged in a cylindrical cavity on the rocker; and a plunger spring in the clearance compensation mechanism is a valve core spring, and a valve core cavity is a plunger cavity of the clearance compensation mechanism. Compared with the prior art, two functional mechanisms for compression and braking of a rocker-integrating type engine are not arranged in a disjoint and mutually perpendicular way but are arranged coaxially in the invention, thereby simplifying structure, reducing the difficulty of machining the exhaust rocker, raising the rigidity of the rocker, raising the reliability of gas distribution mechanisms and raising the accuracy and maneuverability of braking the clearance adjustment of a cam.

Description

technical field [0001] The invention relates to a four-stroke internal combustion engine rocker integrated braking device, which is an auxiliary braking device for automobiles and belongs to the technical field of using a combustion engine as a brake in machinery. Background technique [0002] At present, as a form of auxiliary braking, four-stroke internal combustion engine braking is more and more widely used in commercial vehicles due to its excellent braking effect, low additional cost, and high reliability. On the one hand, the contribution of engine braking is to improve the braking capacity of the vehicle, and on the other hand, it is to reduce the braking load of the main brake of the vehicle. [0003] The principle of four-stroke internal combustion engine braking is to increase the movement resistance of the piston in the cylinder, and apply this resistance to the wheels of the vehicle from the crankshaft and the transmission system of the vehicle to form a braking...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F01L13/06F02D13/04
Inventor 俞黎明
Owner 俞黎明
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com