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A return fuel cooling system for an LPI vehicle includes: an engine radiator, a cooling fan blowing wind to the engine radiator, and a first reservoir tank connected with the radiator through a first cooling line, and cooling an LPI engine; a fuel cooling radiator at the front end of the engine radiator, a second reservoir tank connected with the fuel cooling radiator through a second cooling line, and a water pump on the second cooling line to circulate cooling fluid, and circulating the cooling fluid to an air-conditioner to cool the refrigerant; and a fuel cooler connected with the second cooling line between the fuel cooling radiator and the water pump such that cooling fluid passing through the air-conditioner is circulated in the fuel cooler and connected with the LPI engine and the bombe through a fuel return line.

Titel:	RETURN FUEL COOLING SYSTEM FOR LPI VEHICLE
Link:	View record in USPTO Patent Applications (Volltext)
Veröffentlichung:	2014
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Applications Sprachen: English Document Number: 20140157816 Publication Date: June 12, 2014 Appl. No: 14/029570 Application Filed: September 17, 2013 Assignees: Hyundai Motor Company (Seoul, KR) Claim: 1. A return fuel cooling system for an LPI vehicle, comprising: an engine cooling assembly cooling an LPI engine, the engine cooling assembly including an engine radiator provided at a front end of a vehicle, a cooling fan blowing air through the engine radiator, and a first reservoir tank storing a cooling fluid and connected with the engine radiator through a first cooling line; a refrigerant cooling assembly including a fuel cooling radiator at the front end of the engine radiator of the engine cooling assembly, a second reservoir tank storing the cooling fluid and connected with the fuel cooling radiator through a second cooling line, and a water pump on the second cooling line to circulate the cooling fluid to the air-conditioner assembly to cool the refrigerant through heat exchange with the refrigerant; and a fuel cooler connected with the second cooling line between the fuel cooling radiator and the water pump such that the cooling fluid passing through the air-conditioner assembly is circulated in the fuel cooler and connected with the LPI engine and the bombe through a fuel return line to cool the LPG fuel returned from the LPI engine and allow the cooled LPG fuel to be introduced into the bombe. Claim: 2. The system of claim 1, wherein the air-conditioner assembly includes an expansion valve expanding condensed refrigerant, an evaporator evaporating the expanded refrigerant through heat exchange with air, a compressor compressing evaporated gas-state refrigerant, and a condenser condensing compressed high-temperature and high-pressure refrigerant, which are connected with each other through a refrigerant line, and wherein the condenser is connected with the refrigerant cooling assembly through the second cooling line. Claim: 3. The system of claim 2, wherein the fuel cooler is connected to the condenser in series through the second cooling line. Claim: 4. The system of claim 2, wherein the fuel cooler is connected to the condenser in parallel through a branch line connected with the second cooling line. Claim: 5. The system of claim 4, wherein the branch line is connected with the second cooling line through a valve between the water pump and the second reservoir tank. Claim: 6. The system of claim 2, wherein a refrigerant reservoir tank storing the refrigerant is further provided between the expansion valve and the condenser on the refrigerant line. Claim: 7. The system of claim 2, wherein the condenser is configured by a water-cooled type in which the cooling fluid is introduced through the second cooling line to be used as a heat exchange medium of the refrigerant. Current U.S. Class: 62/406 Current International Class: 02

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RETURN FUEL COOLING SYSTEM FOR LPI VEHICLE