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A control method of an LPI lamp for an LPI vehicle and logic for the control method can turn on again an LPG switch when the LPG switch is unintentionally turned off, by making a driver recognize whether the LPG switch is turned off, by switching an LPI lamp on and off. For this configuration, the control method of an LPI lamp for an LPI vehicle includes checking whether an LPG switch that stops fuel supply to an engine has been turned on or off, and switching the LPI lamp on and off, when it is determined that the LPG switch has been turned off, in an LPI vehicle in an ignition-on state.

Titel:	CONTROL METHOD OF LPI LAMP FOR LPI VEHICLE AND LOGIC THEREFOR
Autor/in / Beteiligte Person:	PARK, Jungjoo
Link:	View record in USPTO Patent Applications (Volltext)
Veröffentlichung:	2012
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Applications Sprachen: English Document Number: 20120133499 Publication Date: May 31, 2012 Appl. No: 13/189343 Application Filed: July 22, 2011 Assignees: Hyundai Motor Company (Seoul, KR) Claim: 1. A control method of an LPI lamp for an LPI vehicle, the method comprising: providing an LPG switch that can stop fuel supply to an engine; checking whether the LPG switch has been turned on or off; and switching the LPI lamp on and off, when it is determined that the LPG switch has been turned off, in an LPI vehicle in an ignition-on state. Claim: 2. The method of an LPI lamp for an LPI vehicle as defined in claim 1, wherein the LPI vehicle includes a fuel line for supplying fuel to the engine, the method further comprising: checking whether fuel pressure of has decreased less than reference pressure, when the engine is started and the vehicle is in a common traveling mode, with the LPG switch on and the LPI lamp off; and informing a driver that the fuel pressure is less than the reference pressure by switching the LPI lamp on and off, when the fuel pressure is less than the reference pressure. Claim: 3. The control method of an LPI lamp for an LPI vehicle as defined in claim 2, wherein checking whether a problem has occurred in an LPG switch circuit for activating the LPG switch and informing the driver that a problem has occurred in the LPG switch circuit by switching the LPI lamp on and off are performed, when the fuel pressure is above the reference pressure. Claim: 4. The control method of an LPI lamp for an LPI vehicle as defined in claim 1, wherein before whether the LPG switch of the LPI vehicle that is in an ignition-on state has been turned off, whether the fuel pressure of the fuel line is above the reference pressure is checked, and when the fuel pressure is less than the reference pressure, the switching of the LPI lamp on and off is performed and then whether the LPG switch has been turned on or off is checked. Claim: 5. The control method of an LPI lamp for an LPI vehicle as defined in claim 4, wherein when the fuel pressure is above the reference pressure, the LPI lamp is turned off, and when the engine is started, the vehicle travels in the common traveling mode. Claim: 6. Control logic of an LPI lamp controlling an LPI lamp by using the control method of an LPI lamp for an LPI vehicle as defined in claim 1 and logic for the control method. Current U.S. Class: 340/451 Current International Class: 60

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CONTROL METHOD OF LPI LAMP FOR LPI VEHICLE AND LOGIC THEREFOR