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Ventilation arrangement for a fuel tank

A ventilation device, fuel tank technology, applied in the direction of the ventilation device, the valve for ventilation, the arrangement combined with the fuel supply of the internal combustion engine, etc., to achieve the effect of small structural volume

Active Publication Date: 2012-07-04
A KAYSER AUTOMOTIVE SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, apart from the assembly cost, the problem with using three separate valves (including one for venting during tank filling) is the space used to accommodate these components, which in these hybrid vehicles are precise due to the presence of electric drives. limit the space

Method used

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  • Ventilation arrangement for a fuel tank
  • Ventilation arrangement for a fuel tank
  • Ventilation arrangement for a fuel tank

Examples

Experimental program
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Embodiment Construction

[0026] as in figure 1 and 2 As shown in the illustration, the valve assembly according to the invention consists of a first housing part 2 housing a toroidal coil 1 and a second housing part 7 comprising a connector 6 for connection to the external atmosphere, the first The housing part is positioned below via a collar 3 on the end face part 4 of a connector 5 for connection to the headspace of the fuel tank. The two housing parts 2 , 7 in the assembled state form a housing 30 housing all components of the valve assembly.

[0027] Numeral 31 denotes a bracket for attaching the housing 30 to a structure inside the vehicle.

[0028] A rod-shaped anchor 8 is placed inside the toroidal coil 1 and extends in the direction of its axis, the movement of which in the direction of the upper side 9 is limited by a fixedly arranged stop portion 10 . Couplings 11 connected to anchors 8 protrude below from housing part 2 and into housing part 7 . The housing part 2 is therefore mainly u...

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Abstract

A ventilation arrangement for the head space of the fuel tank of a vehicle consists of a valve assembly received in a housing (30), which assembly is arranged to produce a maximum pressure, which is not to be exceeded, a minimum pressure below which the pressure must not fall, and a random pressure, for example, for the tank filling process, within the head space. For this purpose a valve which is biased by a spring (25) in the direction towards an atmospheric connector (6) and is characterised by a sealing plate (17), and a valve biased by a spring (19) in the direction towards a connector (5) intended for connection to the head space, and a valve characterised by a sealing head (24) are provided, the latter of which is simultaneously connected to an electromagnetic drive in order to produce the random pressure. As a result of the constructional combination of all three valve functions in the housing (30), the mutually coaxial guidance of the sealing head (24) and of the sealing plate (17), a valve assembly is provided which takes up a small construction volume and is suitable in particular for use under the spatially limited installation conditions of a hybrid vehicle.

Description

technical field [0001] The invention relates to a ventilation device corresponding to the preamble of claim 1 . Background technique [0002] During the development of drives for motor vehicles, vehicles have been developed which, in addition to conventional internal combustion engines, also contain electric drives powered by batteries. These vehicles are also known as hybrid vehicles and are capable of driving for a certain period of time using only the electric motor. [0003] The mineral oil fuel required for the operation of the internal combustion engine is stored in the fuel tank from which, when the engine is not running, vapors escape due to the difference in vapor pressure with respect to the outside atmosphere, these vapors pass through active vents inserted into the ventilation lines Carbon filters, filters are used to adsorptively hold hydrocarbon components. On the other hand, when the engine is running, these retained hydrocarbon components are entrained by t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K15/035F16K24/00
CPCB60K2015/03296B60K2015/03302F16K24/04F16K31/0655B60K15/03519Y10T137/7775Y10T137/7777Y10T137/778Y10T137/7876
Inventor G·米勒-里德雷尔B·基普
Owner A KAYSER AUTOMOTIVE SYST
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