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High-pressure oil pump with oil inlet valve and diesel engine

A technology of high-pressure oil pumps and oil inlet valves, which is applied to mechanical equipment, engine components, fuel injection pumps, etc., to achieve the effects of reducing processing difficulty, improving strength, and running smoothly

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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a high-pressure oil pump and a diesel engine with an oil inlet valve, aiming at solving the above-mentioned problems existing in the high-pressure oil pump and diesel engine with an oil inlet valve in the prior art

Method used

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  • High-pressure oil pump with oil inlet valve and diesel engine
  • High-pressure oil pump with oil inlet valve and diesel engine
  • High-pressure oil pump with oil inlet valve and diesel engine

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Embodiment 1

[0062] Example 1, see Figure 1-Figure 7 .

[0063]This embodiment provides a high-pressure oil pump with an oil inlet valve, which can be applied to diesel engines or other equipment. It can be referred to as a high-pressure oil pump for short.

[0064] This high-pressure oil pump mainly includes a pump body. The pump body is the main structural part of the high-pressure oil pump and is used to realize its main function as an oil pump. The pump body includes a plunger 30 and a plunger sleeve 31, a plunger 30 and a plunger The sleeve 31 is the main structural part of the high-pressure oil pump. During operation, the plunger 30 moves relative to the plunger sleeve 31 to make the pump body work. In addition to these two parts, the pump body can also include other parts or components, such as drive mechanism, plunger couple, etc.

[0065] Specifically, in this embodiment, the inside of the plunger sleeve 31 is a hollow structure and forms a plunger chamber 32, the plunger 30 i...

Embodiment 2

[0083] This embodiment provides a diesel engine, which includes a body, and the above-mentioned high-pressure oil pump with an oil inlet valve is arranged in the body.

[0084] Specifically, the diesel engine is a single-cylinder diesel engine or a two-cylinder diesel engine. The diesel engine including this high-pressure oil pump is the basis for single-cylinder diesel engines and two-cylinder diesel engines to realize electronically controlled fuel injection. It has great economic effects and is an important change in the electronic control of single-cylinder diesel engines and two-cylinder diesel engines.

[0085] The electronically controlled high-pressure common rail fuel injection system has been successfully applied to single-cylinder and two-cylinder diesel engines. Since the oil inlet valve 1 is added in the plunger chamber 32, the oil in the plunger chamber 32 enters through the oil inlet valve 1. When the plunger 30 is pressurized upwards, the oil inlet valve 1 is c...

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Abstract

The invention provides a high-pressure oil pump with an oil inlet valve and a diesel engine, and belongs to the field of oil pumps and diesel engines. The high-pressure oil pump comprises a pump body, and the pump body comprises a plunger and a plunger sleeve; the interior of the plunger sleeve is of a hollow structure, and a plunger cavity is formed inside the plunger sleeve; the plunger is arranged in the plunger cavity; the oil inlet valve is mounted on the pump body, and is arranged at the end of the plunger cavity; and the oil inlet valve is used for controlling the oil inlet amount of the plunger cavity. According to design, machining of a straight groove and a chute in the plunger is removed, the machining difficulty is greatly reduced, the plunger precision is improved, forming of an oil inlet hole in the plunger sleeve is also removed, the machining difficulty and the machining cost are reduced, the strength of the plunger sleeve is improved, matching of the plunger and the plunger sleeve is more perfect, running is more smooth, and the service life is longer.

Description

technical field [0001] The invention relates to the field of oil pumps and diesel engines, in particular to a high-pressure oil pump with an oil inlet valve and a diesel engine. Background technique [0002] Single-cylinder diesel engines and two-cylinder diesel engines are widely used in non-road machinery. The current situation is that diesel engines are generally equipped with traditional mechanical high-pressure oil pumps, and traditional high-pressure oil pumps use oil transfer pumps to deliver low-pressure fuel into the plunger cavity, and change the angle of the plunger through the oil volume adjustment mechanism. The height of the chute changes, so as to realize the change of oil supply (as attached figure 1 ). [0003] In this way, traditional plungers all adopt a chute structure, and the production process needs to strictly control the angle of the chute. Since the chute is processed by grinding, it is inevitable to generate flash and burrs, and sharp edge contr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M59/02F02M59/20F02M59/46
CPCF02M59/02F02M59/20F02M59/462
Inventor 王雷康凯臧广辉解芳