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Fuel delivery unit with a filling level sensor operating with ultrasonic waves

一种输送单元、超声波的技术，应用在液面指示器、液体燃料给料机、仪器等方向，能够解决测量管不能最佳等问题，达到成本低廉的效果

Active Publication Date: 2011-11-16
VTESCO TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Consequently, both a level-dependent change in the distance between the bottom of the fuel tank and the upper dividing wall, and manufacturing-bound tolerances in the range of a few millimeters lead to the fact that the measuring tube cannot be arranged optimally or even directly. Below the upper dividing wall of the fuel tank

Method used

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  • Fuel delivery unit with a filling level sensor operating with ultrasonic waves
  • Fuel delivery unit with a filling level sensor operating with ultrasonic waves
  • Fuel delivery unit with a filling level sensor operating with ultrasonic waves

Examples

Experimental program
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Effect test

Embodiment Construction

[0019] figure 1 The fuel delivery unit 1 in is inserted into the fuel tank 3 through the opening 2. The fuel tank 3 has a bottom 4 and an upper boundary wall 5 . The fuel delivery unit 1 has a swirl pot 6 in which the fuel pump 7 is arranged and a flange 11 closing the opening 2 . A fuel pump 7 sucks fuel out of a swirl pot 6 via a prefilter 8 and feeds the fuel via an outlet 9 into a feed line 10 , which leads through a flange 11 to a not shown internal combustion engine of the motor vehicle.

[0020] The flange 11 of the fuel delivery unit 1 and the swirl pot 6 are connected to each other via a support 12 designed as a circular tube. The connection to the flange 11 takes place via the upper region 13 of the pipe 12 , which is pressed into a bushing 14 of the flange 11 . The lower end 15 of the tube 12 is arranged in a receptacle 16 having a circular cross section, so that the tube 12 can slide along the receptacle 16 . The receptacle 16 extends as far as the bottom 17 of...

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Abstract

The invention relates to a fuel delivery unit (1), which can be inserted into the fuel tank (3) of a motor vehicle, comprising a swirl pot (6), a flange (11) for closing an opening (2) in the fuel tank (3), at least one support element (12) configured as a hollow profile, which is arranged between the flange (11) and the swirl pot (6) and prestresses the swirl pot (6) relative to the bottom (4) of the fuel tank (3), and a filling level sensor arranged on the swirl pot (6). The swirl pot (6) comprises at least one receptacle (16) for the at least one support element (12), the support element (12) gliding in said receptacle when the distance between the flange (11) and swirl pot (6) changes. The receptacle (16) extends to the bottom (17) of the swirl pot (6) and completely surrounds the periphery of the support element (12) and comprises an opening (22) in the bottom region through which fuel from the fuel tank (3) can enter the receptacle (16). The filling level sensor comprises a transmission and receiving unit (20) for ultrasonic waves, wherein the transmission and receiving unit (20) is arranged in the fuel delivery unit (1) such that the ultrasonic waves run in the receptacle (16) and the support element (12).

Description

technical field [0001] The invention relates to a fuel delivery unit which can be installed in a fuel tank of a motor vehicle, the unit comprising: a swirl tank; a flange for closing an opening in the fuel tank; at least one support element designed as a hollow profile, The support is arranged between the flange and the swirl pot and prestresses the swirl pot against the bottom of the fuel tank; and a liquid level sensor is arranged on the swirl pot. Background technique [0002] Such fuel delivery units are often used in the fuel tanks of modern motor vehicles and have therefore been known for a long time. The supports are generally tubes or rods which are pressed into receptacles arranged on the flange, in particular. The swirl pot has holes corresponding to the supports in which the supports slide along. The swirl pot is prestressed against the bottom of the fuel tank by at least one spring element arranged around the carrier. This preloading is necessary for the botto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F23/296B60K15/06B60K15/077F02M37/10
CPCB60K2015/03111G01F23/296F02M37/14F02M37/106B60K15/00F02M37/103B60K2015/03217B60K15/077
Inventor 贝恩德·伦普夫
Owner VTESCO TECH GMBH
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