Compression braking device of four-stroke cycle internal combustion engine

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

Active Publication Date: 2009-09-09
ZHEJIANG LIMING INTELLIGENT MFG CO LTD
View PDF1 Cites 17 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 layout of the gap compensation mechanism and the control and check valve mechanism, as well as t

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
  • Compression braking device of four-stroke cycle internal combustion engine
  • Compression braking device of four-stroke cycle internal combustion engine
  • Compression braking device of four-stroke cycle internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Specific implementation plan

[0027] The specific embodiments of the present invention will be described in detail below in conjunction with the drawings:

[0028] The four-stroke internal combustion engine compression brake device provided by the present invention, such as figure 1 As shown, there is an exhaust valve mechanism 1 of a four-stroke engine. The exhaust valve mechanism 1 consists of an exhaust cam 2, an exhaust rocker arm 3, a rocker arm shaft 4, an exhaust valve bridge 5, and an exhaust valve 6. , Valve spring 7 and solenoid valve 8. The exhaust cam has two brake protrusions 10a, 10b and a working protrusion. The exhaust rocker arm 3 is installed via the rocker shaft 4, one end of the rocker arm 3 has a roller for the follower to cooperate with the cam 2, and the other end is installed with an elephant foot 24. Two exhaust valves 6 are connected in parallel at both ends of the exhaust valve bridge 5 and each has a valve spring 7 to provide restoring force. A...

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 compression braking device of a four-stroke cycle internal combustion engine. A control valve mechanism (13) and a clearance compensation mechanism (23) with the compensated clearance being the lift range of a braking projection are installed in parallel on one end of an amounting elephant feet of a rocker (3); a clearance compensation mechanism (11) with the compensated clearance being the lift range of a valve clearance is arranged in the midpoint of the connecting positions of an exhaust valve bridge (5) and two exhaust valves (6); the elephant feet (24) are coaxially connected below the lower end of the previous clearance compensation mechanism (23); the upper end of the next clearance compensation mechanism (11) is always in contact with the lower ends of the elephant feet; and the spring force of the clearance compensation mechanism is smaller than braking oil pressure and larger than dead weight of the elephant feet. Compared with the prior art, the compression braking device improves the reliability and the balance of a valve actuating mechanism, simplifies the structure, reduces the processing difficulty of the rocker, improves the rigidity of the rocker, and improves the accuracy and operability of the adjustment of the valve clearance. In addition, when the engine compresses and brakes, the two exhaust valves can be opened at the same time, thereby improving the braking effect of the engine.

Description

technical field [0001] The invention relates to a four-stroke internal combustion engine compression 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 forc...

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
IPC IPC(8): F01L13/06F02D13/04
Inventor 俞黎明
Owner ZHEJIANG LIMING INTELLIGENT MFG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap