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Negative pressure gasoline pump

A gasoline pump and negative pressure technology, which is applied in the field of negative pressure gasoline pumps, can solve problems such as low work efficiency, limited engine work efficiency, and slow oil speed, and achieve high work efficiency, low improvement difficulty, and fast oil speed.

Active Publication Date: 2014-04-23
NINGBO JIERUI PISTON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the negative pressure diaphragm of the negative pressure gasoline pump in the prior art can only pump oil once during a negative pressure-positive pressure process, the oil speed is relatively slow, and the work efficiency is low, thereby limiting the work efficiency of the engine.

Method used

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  • Negative pressure gasoline pump

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0013] like figure 1 A kind of negative pressure gasoline pump shown, it comprises gasoline pump body 1, upper cover body 2 and lower cover body 3 (certainly also comprises other parts, but because do not relate to the invention point of the present invention, so no longer here repeat), the upper cover 2 and the lower cover 3 are respectively fixed on both sides of the gasoline pump body 1, the gasoline pump body 1 is provided with an oil inlet chamber 4, a negative pressure control chamber 5 and an oil outlet chamber 6, and the oil inlet chamber 4 It communicates with the negative pressure control chamber 5, and the negative pressure control chamber 5 communicates with the oil outlet chamber 6, and the outlet of the oil inlet chamber 4 and the inlet of the oil outlet chamber 6 are installed with a one-way valve sheet 7 and a limit sheet 8 Com...

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Abstract

A negative pressure gasoline pump comprises a gasoline pump body (1), an upper cover (2) and a lower cover (3). A negative pressure spring (10), a first spring cover (11), a membrane (12), a second spring cover (13) and positive pressure spring (14) are sequentially disposed between the inner wall of the upper cover (2) and the gasoline pump body (1). One side of the first spring cover (11) is connected to one end, close to the membrane (12), of the negative pressure spring (10) in a sleeved manner. The other side of the first spring cover (11) is abutted against the membrane (12). One side of the second spring cover (13) is connected to one end, close to the membrane (12), of the positive pressure spring (14) in sleeved manner. The other side of the second spring cover (13) is abutted against the membrane (12). A gasoline outlet membrane (15) is disposed between the lower cover (3) and the gasoline pump body (1). Compared with the prior art, the negative pressure gasoline pump has the advantages that the pump is high in gasoline speed, high in work efficiency and long in service life, and work efficient of an engine can be further increased.

Description

technical field [0001] The invention belongs to the field of vehicle engine components, in particular to a negative pressure gasoline pump used for engine oil supply. Background technique [0002] The function of the gasoline pump (also known as the fuel pump) is to suck the gasoline out of the fuel tank and press it into the float chamber of the carburetor through the pipeline and the gasoline filter. It is thanks to the gasoline pump that the gasoline tank can be placed at the rear of the car away from the engine and below the engine. [0003] At present, the negative pressure gasoline pump of the prior art, as in the Chinese patent database, the publication number is CN103206325A, and the name is a fuel pump with a safety valve, which discloses a fuel pump with a safety valve, which includes a fuel pump Main body, upper cover and lower cover. Negative pressure springs, spring top blocks and negative pressure diaphragms are sequentially arranged between the upper cover an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B43/02
Inventor 杨鋆杰
Owner NINGBO JIERUI PISTON
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