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System and method for variation of opening speed of fuel tank valve

A technology for fuel storage tanks and valves, applied in the direction of charging systems, chemical instruments and methods, and the arrangement combined with the fuel supply of internal combustion engines, etc., can solve problems such as blockage, achieve the effect of preventing damage and prolonging the expected value of service life

Active Publication Date: 2020-04-17
PLASTIC OMNIUM ADVANCED INNOVATION & RES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One drawback is that when the pressure differential is high, the transition between the two stages can be too abrupt and cause clogging

Method used

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  • System and method for variation of opening speed of fuel tank valve
  • System and method for variation of opening speed of fuel tank valve
  • System and method for variation of opening speed of fuel tank valve

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Embodiment Construction

[0039] The present invention will be described with respect to particular embodiments and with reference to certain drawings but the invention is not limited thereto but only by the claims. The depicted figures are only schematic and non-limiting. In the drawings, the size of some of the elements may be exaggerated and not drawn on scale for illustrative purposes. The dimensions and relative dimensions do not correspond to actual degrees of reduction in the practice of the invention.

[0040] Moreover, the terms "first, second, third" and similar terms in the description and claims are used to distinguish between similar elements and not necessarily to describe an order, whether temporal, spatial, hierarchical or any in other ways. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of the invention described herein are capable of operation in other sequences than described or illustrated herein.

[0041...

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Abstract

Method for controlling the opening speed of a valve connected between a fuel tank and a filter, and configured to relieve the pressure inside the fuel tank into the filter, the method comprising the steps of: measuring a pressure in the fuel tank, measuring or inferring a fuel vapor temperature in the fuel tank, calculating an opening speed as a function of the pressure and the fuel vapor temperature in the fuel tank, opening the valve at the calculated opening speed in order to avoid corking of another valve of the fuel tank connected between the valve and the fuel tank. Assembly for puttingthe method into practice.

Description

technical field [0001] This invention relates to isolation valves for fuel tanks in the automotive industry. Background technique [0002] Fuel tank vapor and emission control systems are used to control the flow of fuel vapors from the vehicle's fuel tank and are also used to control the relative pressure of the fuel tank. The vapors are exhausted to a canister or other vapor control structure where hydrocarbon vapors are stored and also connected to the engine air inlet. [0003] The fuel tank generates fuel vapors during various phases of operation, which are directed to a canister or other component responsible for storing them and then purging them to the intake header of the engine on a regular basis. During vehicle operation, stored vapors must be purged periodically. To control this purge, the fuel system is operated to control the flow of vapors from the storage canister to the engine air inlet, and to let ambient air in to purge the canister. [0004] Document U...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M25/08B60K15/035F02D41/22F02D41/00B60K15/03
CPCB60K2015/03561B60K2015/03576B60K15/03504B60K15/03519F02D41/221F02M25/0809F02M25/0836F02D41/004B60K2015/03302B60K2015/03514F02M2025/0845B60K2015/0358B01D46/4272B01D46/446B01D46/448B01D2279/35B60K15/05B60K2015/0319B60K2015/03217B60K2015/03236B60K2015/0561F02D2200/0602F02D2200/0606
Inventor 米顿·盖里大卫·希尔
Owner PLASTIC OMNIUM ADVANCED INNOVATION & RES SA