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Fuel drawing device for fuel tank of automobile

A technology for automotive fuel tanks and fuels, applied in the direction of fuel injection devices, components of pumping devices for elastic fluids, low-pressure fuel injection, etc., capable of solving problems such as emptying hazards

Inactive Publication Date: 2002-07-24
MARWAL SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] Fifth, it should be emphasized that unless special precautions are taken, the presence of degassing holes in the pump housing can lead to the danger of the positive reserve associated with the pump being emptied through said degassing holes

Method used

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  • Fuel drawing device for fuel tank of automobile
  • Fuel drawing device for fuel tank of automobile
  • Fuel drawing device for fuel tank of automobile

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Embodiment Construction

[0032] As mentioned above, the device according to the invention comprises an electric suction pump 100 and a fine filter 210 placed upstream of the pump, ie at its inlet.

[0033] Various configurations of the fine filter 210 will be described in more detail below.

[0034] In addition, in the description of the present invention, the extraction pump 100 is a servo-controlled pump. More specifically, the servo control of the extraction pump 100 is carried out in such a way that the flow of fuel through the pump and thus through the fine filter 210 placed upstream of it is substantially equal to that required for normal operation as the instantaneous consumption of the engine. function traffic.

[0035] Thus, when extraction pump 100 is drawing from a supply supplied by a jet pump receiving an input flow directly or indirectly from the extraction pump outlet, the extraction pump is servo-controlled to deliver a variable The fuel flow, ie, the flow through the extraction pump...

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PUM

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Abstract

The present invention relates to a fuel drawing-off device for a motor vehicle tank, the device comprising a drawing-off pump (100) and a fine filter (210) placed upstream from the pump (100), wherein the drawing-off pump (100) is a pilot operated pump.

Description

technical field [0001] The invention relates to the field of systems for pumping fuel from motor vehicle fuel tanks. Background technique [0002] Currently, many systems have been proposed for this purpose. [0003] Typically, systems for drawing fuel from an automotive fuel tank include an electric pump that draws fuel from the fuel tank or from a supply located in the fuel tank. [0004] The purpose of this supply is to limit the amount of movement of the oil near the suction inlet of the pump caused by the centrifugal forces created by the vehicle accelerating, decelerating or driving on non-straight roads. [0005] In addition, known fuel extraction systems generally comprise a coarse filter or strainer placed at the inlet of the pump, and a fine filter to ensure the quality of the oil entering the engine onwards. [0006] In particular, such a fuel extraction system has been proposed, for example in document WO A 99 / 01658, in which a fine filter is located downstream...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M37/08F02D41/04F02M37/00F02M37/04F02M37/10F02M37/18F02M37/20F02M37/44F02M37/46F02M37/50F02M69/00F04D5/00F04D29/70
CPCF02M37/106F02M37/22F02M37/50F02M37/46F02M37/44
Inventor 帕斯卡尔·奥斯尼弗雷德里克·维勒拉
Owner MARWAL SYST