Electronic unit composite pump for light-vehicle diesels

A combined pump and single pump technology, applied in mechanical equipment, engine components, machines/engines, etc., can solve the problems of affecting service life, insufficient oil absorption, large cam impact, etc., to ensure working stability and shorten the overall length , the effect of reducing inertia

Active Publication Date: 2013-11-27
龙口龙泵柴油喷射高科有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, when the existing electronically controlled combined pump is applied to a high-speed diesel engine, there are still the following defects. The first is that the length and quality of the tappet are relatively large, the structure is unreasonable, and the impact on the cam is large during high-speed operation; Because the arc line corresponding to the descending section of the plunger in the existing cam is a

Method used

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  • Electronic unit composite pump for light-vehicle diesels
  • Electronic unit composite pump for light-vehicle diesels
  • Electronic unit composite pump for light-vehicle diesels

Examples

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Embodiment Construction

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0026] Such as figure 1 with Figure 4 As shown, an electronically controlled unit combination pump for a light vehicle diesel engine includes a combined pump body 6, an oil delivery pump 8, a camshaft 9, and a plurality of electronically controlled unit pumps 5 and the electronically controlled unit pumps 5. Corresponding tappet assembly and cam 7 are characterized in that the electronically controlled unitary pump 5 is installed on the combined pump body 6, and the electronically controlled unitary pump 5 includes the unitary pump body 1 and is located on The plunger 4 in the single pump body 1, the control valve core 3 and the electromagnet 2 installed on one side of the single pump body 1, the oil delivery pump...

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Abstract

The invention relates to the technical field of vehicle engine manufacturing, in particular to an electronic unit composite pump for light-vehicle diesels. The electronic unit composite pump for light-vehicle diesels comprises a composite pump body, an oil conveying pump, a camshaft, a plurality of electronic unit pumps, tappet body assemblies corresponding to the electronic unit pumps and a cam, and is characterized in that the electronic unit pumps are installed on the composite pump body and comprise unit pump bodies, a plunger, control valve elements and electromagnets installed on one sides of the unit pump bodies, the oil conveying pump is installed on one side of the composite pump body, the tappet body assemblies are arranged between the cam and the plunger and comprise tappets, rolling wheels and rolling wheel pins, and U-shaped cavities are formed in the ends where the tappets make contact with the rolling wheels, wherein the plunger and the control valve elements are arranged in the unit pump bodies. The electronic unit composite pump for light-vehicle diesels has the advantages of being more compact in structure and capable of acquiring higher working speed so as to be matched with the high-speed diesels.

Description

technical field [0001] The invention relates to the technical field of vehicle engine manufacturing, in particular to an electronically controlled unit combined pump for a light vehicle diesel engine. Background technique [0002] At present, in the field of low-power high-speed diesel engines, the fuel injection systems are mainly small in-line pumps and VE pumps. Since these two pumps cannot provide higher injection pressure, it is difficult to meet the requirements of the National IV emission standards. Although the high-pressure common rail system can provide high injection pressure, the price is high, and the use and maintenance costs are also high, which cannot meet the needs of users. The electronically controlled combination pump can not only provide a fuel injection pressure up to 200MPa, but also realize flexible control of fuel injection timing to meet engine emission requirements, and its manufacturing cost is lower than that of the common rail system, and its us...

Claims

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Application Information

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IPC IPC(8): F02M51/04
Inventor 陈瑞军韩利勇郑建松孟祥义刘本学
Owner 龙口龙泵柴油喷射高科有限公司
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