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Electric control type engine braking device

An engine braking and electronically controlled technology, which is applied in the direction of engine components, machines/engines, valve devices, etc., can solve the problems of long intervention and exit time, unstable transient transition process of the engine, etc., and achieve the entry and exit time Shortening, reduction in oil demand and oil supply capacity of the oil pump, and reduction in fuel consumption

Pending Publication Date: 2019-12-03
ZHEJIANG LIMING INTELLIGENT MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another example is the use of oil-driven engine braking. The time for engine braking to enter and exit is generally longer (>0.4s), which will affect the transition process of engine braking and ignition states, resulting in unstable transient transition process of the engine.

Method used

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  • Electric control type engine braking device
  • Electric control type engine braking device
  • Electric control type engine braking device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] Embodiments of the present invention will be further described below in conjunction with accompanying drawings:

[0051] like Figure 1-4 As shown, an electronically controlled engine braking device includes an exhaust valve 1, a rocker shaft 2, a camshaft 3, an exhaust rocker 4, an auxiliary rocker 5, an elastic member 6, and an electronically controlled control mechanism 7.

[0052] The exhaust valve 1 includes a first exhaust valve 11, a second exhaust valve 12, and a valve bridge 13 horizontally arranged on the first exhaust valve 11 and the second exhaust valve 12, the first exhaust valve 11 and the second exhaust valve 12 The second exhaust valves 12 all adopt mushroom valves, which are used to control the flow of gas between the combustion chamber in the engine and the intake and exhaust manifolds.

[0053] The rocker shaft 2 is arranged parallel to the camshaft 3, and the camshaft 3 has an exhaust cam 31 and an auxiliary cam 32 arranged adjacently. The rotation...

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PUM

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Abstract

The invention discloses an electric control type engine braking device characterized by comprising an electric control mechanism; the electric control mechanism at least comprises an ejector block movably arranged on an auxiliary rocker arm, and the ejector block is provided with a first position where a certain braking gap is kept between the front end and an exhaust rocker arm and a second position where the front end can make contact with the exhaust rocker arm to achieve the braking function. The engine braking device has the advantages that the electric control mechanism is arranged to replace existing engine oil to serve as a working or driving control medium, the reliability risk caused by the engine oil is eliminated, the engine braking using area is increased, the engine braking entering and exiting time is shortened, fuel consumption is reduced, and engine braking performance grading is more refined.

Description

technical field [0001] The invention relates to a medium-heavy diesel and natural gas engine, in particular to an electronically controlled engine braking device. Background technique [0002] There are many mountains in our country, and the mountain area is vast, accounting for about 69% of the total land area. When heavy trucks travel on long downhill roads in mountainous areas, drivers frequently use the service brake. The service brake can absorb a large amount of energy in a short period of time. As the time increases, the surface temperature of the friction pair between the brake drum and the brake shoe will increase, and the friction coefficient will decrease, which will eventually lead to a dangerous situation of reduced braking performance or even brake failure, causing major traffic accidents. In order to improve the driving safety of heavy-duty commercial vehicles, it is necessary to add an auxiliary braking system on the basis of service braking to ensure that th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L13/06F01L1/18
CPCF01L13/06F01L1/18
Inventor 俞黎明俞振寰
Owner ZHEJIANG LIMING INTELLIGENT MFG CO LTD
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