Ventilating device used for fuel tank and method used for operating ventilating device

A ventilation device and fuel tank technology, applied in the direction of the arrangement combined with the fuel supply of the internal combustion engine, the power device, and the addition of non-fuel substances to the fuel, etc., can solve the problems of high cost and other issues

Inactive Publication Date: 2012-01-25
AUDI AG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

which in turn leads to higher costs

Method used

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  • Ventilating device used for fuel tank and method used for operating ventilating device
  • Ventilating device used for fuel tank and method used for operating ventilating device
  • Ventilating device used for fuel tank and method used for operating ventilating device

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Embodiment Construction

[0031] Ventilation device 10 for a fuel tank 12 of a motor vehicle, which may in particular have an internal combustion engine 22 and (not shown) a hybrid vehicle with an electric drive. The activated carbon filter 20 serves as a so-called refueling activated carbon filter and at the same time as an operating activated carbon filter. That is to say, the activated carbon filter 20 is used to absorb gaseous hydrocarbons when the fuel tank 12 is filled with fuel via a filling pipe (not shown) and thus discharged from the fuel tank 12 . However, the activated carbon filter 20 is also used to absorb gaseous hydrocarbons from the fuel tank 12 in operating conditions other than the refueling of the fuel tank 12 .

[0032] The gaseous hydrocarbons are released from the fuel when the fuel tank 12 is subjected to thermal loads due to high external temperatures or due to the operation of the internal combustion engine 22 of the motor vehicle. Even in the stopped state of the motor vehi...

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PUM

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Abstract

The present invention relates to a ventilating device (10) used for a fuel tank (12) of a motor vehicle, wherein the ventilating device (10) comprises: at least one filter (20) used for storing and releasing gaseous hydrocarbon from the fuel tank (12); a detection device (26) used for detecting adsorption degree of the gaseous hydrocarbon of the at least one filter (20); and a control device (32) which is designed to start a combustion engine (22) of the motor vehicle in order to make the at least one filter (20, 20') regenerate, thereby preventing the gaseous hydrocarbon from escaping from the ventilating device (10) unhopefully. In addition, the present invention also relates to a method for operating the ventilating device (10) used for the fuel tank (12) of the motor vehicle.

Description

technical field [0001] The invention relates to a ventilation device for a fuel tank of a motor vehicle. The ventilation device includes at least one filter for storing and releasing gaseous hydrocarbons from the fuel tank. The degree of adsorption / charging of the at least one filter with gaseous hydrocarbons can be detected by means of a detection device. The control device serves to control an internal combustion engine of a motor vehicle. Furthermore, the invention relates to a method for operating such a ventilation device. Background technique [0002] A ventilation device of the aforementioned type is known from DE 100 01 060 C1. One of the activated carbon containers is coupled to the fuel tank and stores gaseous hydrocarbons from the fuel tank. The activated carbon container is equipped with two HC sensors for determining the degree of adsorption of the activated carbon. The determined values ​​are passed on to an electronic engine control unit. The regeneratio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M25/08
CPCB60W20/00F02D41/0032B60K2015/03514B60W10/06F02D41/062F02M25/089
Inventor A・瓦格纳
Owner AUDI AG
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