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Single valve opened engine auxiliary valve actuator

A technology for assisting valves and engines, applied to engine components, machines/engines, mechanical equipment, etc., can solve problems such as difficult to use engines, achieve the effects of reducing load, eliminating influence, and improving performance and durability

Active Publication Date: 2014-07-09
SHANGHAI UNIVERSOON AUTOPARTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The above-mentioned braking device with a special rocker arm is difficult to apply to an engine whose valve bridge is parallel to the rocker arm

Method used

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  • Single valve opened engine auxiliary valve actuator
  • Single valve opened engine auxiliary valve actuator
  • Single valve opened engine auxiliary valve actuator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] figure 1 , figure 2 , image 3 and Figure 4 Used to describe Example 1.

[0041] figure 1 The positional relationship between the auxiliary rocker arm 2102 , the conventional rocker arm 210 , the valve bridge 400 and the valves 301 and 302 in Embodiment 1 of the auxiliary valve actuator for a single-valve engine of the present invention is described. First, the valve bridge 400 ( figure 2 and image 3 are more clearly described) located above the engine's two valves 301 (inner valve) and 302 (outer valve). Secondly, the conventional rocker arm 210 is located parallel to the valve bridge 400 (the conventional valve clearance adjusting screw 110 and the lock nut 105 connect the two). Then, the auxiliary valve clearance adjustment screw 1102 and the lock nut 1052 on the auxiliary rocker arm 2102 are located on the conventional rocker arm 210 (while on the inner valve 301). Additionally, the conventional rocker arm 210 (through the conventional rocker hole 206 ) ...

Embodiment 2

[0047] Figure 5 and Figure 6 Used to describe Example 2.

[0048] Figure 5 with embodiment one figure 1 Very similar, the only difference is that the auxiliary rocker arm 2102 of this embodiment is in Figure 4 The mechanism of the shown embodiment one has been increased as Figure 6 Half swingarm shown, supplemented with a support. The two rocker holes 2061 and 2062 of the new auxiliary rocker arm 2102 are installed on both sides of the conventional rocker arm 210 through the conventional rocker shaft 205 ( Figure 5 ). The working principle of this embodiment is the same as that of Embodiment 1, and will not be described in detail here.

Embodiment 3

[0050] Figure 7 and Figure 8 Used to describe embodiment three.

[0051] Figure 7 and Figure 8 with embodiment one figure 2 and image 3 Very similar, the only difference is that the hydraulic control valve 170 of the auxiliary valve clearance compensation mechanism 100 of this embodiment is disposed outside the two pistons 160 and 165 . The working principle of this embodiment is the same as that of Embodiment 1, and will not be described in detail here.

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PUM

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Abstract

Discloses is a single valve opened engine auxiliary valve actuator. The single valve opened engine auxiliary valve actuator comprises an auxiliary cam and an auxiliary valve gap compensating mechanism. The auxiliary valve gap compensating mechanism is integrated within a common rocker arm of an engine and between the auxiliary cam and a valve of the engine; in a non-operating position of the auxiliary valve gap compensating mechanism, a gaps can be generated between the auxiliary cam and the valve to cancel the movement transmission between the auxiliary cam and the valve; in an operating position of the auxiliary valve gap compensating position, connection can be formed between the auxiliary cam and the valve to generate engine-assisted valve motion. The auxiliary valve gap compensating mechanism can be a hydraulic locking mechanism or a mechanical clutch mechanism. The single valve opened engine auxiliary valve actuator can be used for generating special cam engine braking or waste gas circulating auxiliary valve movement, thereby improving the performance of the engine.

Description

Technical field: [0001] The invention relates to the field of machinery, in particular to the field of valve driving of vehicle engines, in particular to an engine auxiliary valve actuator for generating auxiliary valve movement of the engine and opening a single valve. Background technique: [0002] In the prior art, conventional valve actuation methods for vehicle engines are well known and have been used for more than one hundred years. However, due to the additional requirements on engine emissions and engine braking, more and more engines need to add auxiliary valve movements on the basis of conventional valve movements, such as valve movements for exhaust gas recirculation and engine braking. Engine brakes have gradually become a must-have device for heavy commercial vehicle engines. [0003] Engine braking technology is also well known. Just temporarily convert the engine to a compressor. Fuel is cut off during the transition, and the valve is opened near the end o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L13/06F01L1/18F01L1/24
Inventor 奚勇
Owner SHANGHAI UNIVERSOON AUTOPARTS CO LTD
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