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Method and system of controlling leakage shutoff valve

A shut-off valve and drain technology, applied in electrical control, charging system, engine control, etc., can solve the problems of complicated engine and ECU system self-diagnosis device, problems of starting performance, increase of NMHC exhaust gas, etc.

Inactive Publication Date: 2010-09-22
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In this case, since the ignition timing of the engine is changed according to each driver's intention, there is a problem with starting performance, since there is also NMHC exhaust gas due to fuel being held between the injector and the leak cut solenoid valve Another question added
[0013] In short, the ideal method is to start the engine just before the fuel injection, so that the leakage cut-off solenoid valve is opened synchronously, but in order to realize such an ideal method, it will cause the engine, ECU system, and self-diagnosis device to become complicated

Method used

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  • Method and system of controlling leakage shutoff valve
  • Method and system of controlling leakage shutoff valve
  • Method and system of controlling leakage shutoff valve

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Embodiment Construction

[0022] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0023] figure 1 A bleed stop valve of an exemplary embodiment of the present invention is shown.

[0024] Such as figure 1 As shown, the bleed stop valve of the exemplary embodiment of the present invention includes an injector 101 , a bleed stop valve 103 and an electronic control unit (ECU) 105 .

[0025] The injector 101 delivers fuel to the intake manifold 107, and the drain cut-off valve 103 is connected to the injector 101 so that the injector 101 can cut off the fuel flowing through the injector 101.

[0026] The ECU 105 may be realized by at least one microprocessor activated by a predetermined program, and the predetermined program may be programmed to include a set of instructions for performing steps in a method for controlling the present invention A method of draining a shutoff valve of an exemplary embodiment.

[0027] ...

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PUM

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Abstract

This invention provides a method and a system of controlling a leakage shutoff valve preventing leakage of LPG fuel during parking of a vehicle, having stable startability and simple in construction.

Description

[0001] Horizontal references to related applications [0002] This application claims the priority and benefits of the patent applications Nos. 10-2005-0074490 and 10-2005-0112489 filed with the Korean Intellectual Property Office on Aug. 12, 2005 and Nov. 23, 2005, respectively, here By including them for reference. technical field [0003] The invention relates to a method and a system for controlling a discharge shut-off valve. More particularly, the present invention relates to a method of controlling a bleed stop valve mounted on an injector using a pressure difference of a battery and a system for performing the method. Background technique [0004] Typically, liquefied petroleum gas injection (LPI) engines use liquefied petroleum gas (LPG) as fuel. [0005] If the temperature of LPG increases, the saturated vapor pressure of LPG fuel also tends to increase along a straight line. [0006] Therefore, after the engine is stopped, the temperature of the LPG fuel increa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/04F02D41/30F02D41/26F02M51/06
CPCY02T10/32F02M21/0248F02M21/0242F02D19/023F02D41/3872F02M21/0263F02M21/0293F02M21/0254Y02T10/30
Inventor 李禹植
Owner HYUNDAI MOTOR CO LTD