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An electronically controlled split unit pump

A single pump and separate technology, which is applied in the direction of fuel injection pumps, engine control, fuel injection pumps, etc., can solve the problems of inconvenient processing, large space occupation, difficult processing, etc., and achieve the reduction of lateral width and reduction of required Accuracy, the effect of reducing the lateral width

Active Publication Date: 2022-04-15
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 2. The high-pressure oil hole above the plunger cavity is offset, which is inconvenient to process
[0010] 3. The coil is placed horizontally, which takes up a large space and is difficult to arrange on the engine
[0013] 1. The sealing surface at the lower end of the valve body requires high processing precision and high parallelism, which is difficult to guarantee
[0014] 2. The mating surface between the pump nozzle and the damping valve requires high precision and is not easy to process

Method used

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  • An electronically controlled split unit pump
  • An electronically controlled split unit pump
  • An electronically controlled split unit pump

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Embodiment Construction

[0046] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0047] The present invention provides an electronically controlled split unit pump, which includes a pump body 8 and a valve body 23. The valve body 23 is fixed on the side of the pump body 8 by bolts. The outlet of the oil passage communicates with the pump nozzle oil passage 29, the plunger chamber, and the high-pressure oil passage D in the valve body 23; the low-pressure oil passage in the pump body 8 communicates with the low-pressure oil passage in the valve body 23.

[0048] Such as Figure 13As shown, the high-pressure oil passage in the pump body 8 is divided into oil passage I30, oil passage II31 and oil passage III32; Road III32 is arranged obliquely, one end communicates with high-pressure oil passage D in valve body 23, and there is a bend II34 between the two, and the other end communicates with oil passage II31; oil passage II31 is vertical...

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Abstract

The invention discloses an electronically controlled split unit pump, which comprises a pump body and a valve body. The valve body is fixed on the side of the pump body through bolts. The high-pressure oil passage in the pump body is in the shape of a three-way pipe. The nozzle oil passage, the plunger cavity, and the high-pressure oil passage in the valve body are connected; the low-pressure oil passage in the pump body is connected with the low-pressure oil passage in the valve body. The invention can reduce the processing difficulty and guarantee the precision at the same time.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an electronically controlled split unit pump. Background technique [0002] Diesel engine is the heat engine with the highest thermal efficiency and the most widely used in the fields of industry, agriculture, transportation and even national defense. Therefore, the development of diesel engine industry is of great significance to social economic construction and national defense construction. At present, diesel engines are developing towards high speed, light weight and high reinforcement. [0003] The fuel supply system is one of the most important and precise components in a diesel engine, known as the "heart" of a diesel engine. The technical progress of diesel engines is largely due to the development of fuel supply systems. For the fuel supply system, high injection pressure and high injection rate are required for the duration of the injection. Electronically controlle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D1/02F02M37/08F02M59/44F02M59/46F02M59/48F02M55/02
CPCF02M37/08F02M59/46F02M59/44F02M59/48F02M55/02
Inventor 王字满杨旭超武治平孙柏刚吴晗
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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