Heating systems – Heat and power plants – Vehicle
Reexamination Certificate
1999-01-21
2001-04-24
Joyce, Harold (Department: 3744)
Heating systems
Heat and power plants
Vehicle
C122S026000
Reexamination Certificate
active
06220521
ABSTRACT:
TECHNICAL FIELD
The present invention relates generally to vehicle heating systems and more specifically to heating systems in vehicles utilizing hydraulic devices.
BACKGROUND ART
A variety of systems have been developed for heating vehicle passenger compartments. Several of these previous systems relied upon a method of drawing heat from engine coolant fluid to provide heat to a vehicle passenger compartment. The coolant fluid flows through a heat exchanger where the heat of the fluid is transferred to the air flowing toward the passenger compartment. Once the coolant fluid passes through the heat exchanger, it is returned to the engine for recirculation. Because heat from the engine operation is responsible for heating the coolant fluid, and due to the inherent properties of coolant fluids, these systems often take a substantial amount of time to provide heat to passenger compartments after a cold start. Further, because these heating systems draw heat from an additional fluid, as opposed to harnessing heat from an existing engine fluid, engines utilizing these heating systems must contain an additional pump and plumbing. While these systems have performed well, there is room for improvement.
The present invention is directed to overcoming one or more of the problems set forth above and to improving the performance of passenger compartment heating systems.
SUMMARY OF THE INVENTION
A vehicle includes a vehicle housing which defines a passenger compartment. Attached to the vehicle housing is a hydraulic system, that includes a hydraulic fluid which flows through at least one passageway within the hydraulic system. Also attached to the vehicle housing is a passenger compartment heating system. The passenger compartment heating system includes a heat exchanger, wherein a portion of the heat exchanger is a segment of the at least one passageway of the hydraulic system.
REFERENCES:
patent: 4069972 (1978-01-01), Hausmann
patent: 4192456 (1980-03-01), Shields et al.
patent: 4285200 (1981-08-01), Byrne et al.
patent: 4352456 (1982-10-01), Brandenberg, Jr.
patent: 4432493 (1984-02-01), Moser et al.
patent: 4434934 (1984-03-01), Moser et al.
patent: 4487364 (1984-12-01), Okulicz et al.
patent: 4728029 (1988-03-01), Griebel et al.
patent: 5031690 (1991-07-01), Anderson et al.
patent: 5168703 (1992-12-01), Tobias
patent: 5318100 (1994-06-01), Aoki
patent: 5333679 (1994-08-01), Suzuki et al.
patent: 5540203 (1996-07-01), Foulkes et al.
patent: 5582151 (1996-12-01), Wertheimer
patent: 5678521 (1997-10-01), Thompson et al.
patent: 5697546 (1997-12-01), Cicioni
patent: 35 19 650 A1 (1986-12-01), None
patent: 197 11 682 (1997-11-01), None
patent: 196 30 407 A1 (1998-01-01), None
patent: 2 320 523 (1998-06-01), None
Bartley Bradley E.
Blass James R.
Gibson Dennis H.
Boles Derek S.
Caterpillar Inc.
Joyce Harold
McNeil Michael B.
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