US Patent Application No: 2012/0137,992

Number of patents in Portfolio can not be more than 2000

COOLING DEVICE FOR VEHICLE

ALSO PUBLISHED AS: 8573163

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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When the temperature of coolant in an engine is greater than or equal to a half-warm-up determination value, which is set to a value smaller than a determination value for warm-up completion of the engine, an engine cooling control section opens a valve to mix the coolant in two coolant circuits. Accordingly, even if the temperature of the coolant in the engine fluctuates due to mixing coolants at different temperatures, such fluctuation occurs in a temperature range lower than the determination value for the warm-up completion of the engine. This prevents a control procedure for the time before the warm-up completion and a control procedure for the time after such completion from being performed in a repeating, alternating manner. As a result, when the coolant circulating in the first coolant circuit and the coolant circulating in the second coolant circuit are mixed together, control that should be performed based on the coolant temperature in the engine is carried out without hindrance.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
TOYOTA JIDOSHA KABUSHIKI KAISHAAICHI-KEN11214

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kinomuka, Shigeki - 1 1
Saito, Tatsuki - 2 2

Cited Art Landscape

Patent Info (Count) # Cites Year
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (2)
* 6,837,192 Engine cooling system 2 2002
* 6,928,962 Hot coolant type heat accumulating apparatus for a hybrid vehicle and heat accumulating method thereof 4 2003
 
DAIMLER AG (1)
* 7,421,984 Method for adjusting a coolant flow by means of a heating cut-off valve 2 2004
 
DENSO CORPORATION (1)
* 7,363,804 Method for detecting malfunction of a cooling system based on detected coolant temperature 2 2006
 
ELECTRO-MOTIVE DIESEL, INC. (1)
* 5,910,099 Turbocharged engine cooling system control with fuel economy optimization 29 1997
 
FORD GLOBAL TECHNOLOGIES, LLC (1)
* 7,263,954 Internal combustion engine coolant flow 5 2005
 
FORD MOTOR COMPANY (1)
* 7,655,098 Readying cooling circuits for use in fuel cells 2 2006
 
HONDA MOTOR CO., LTD. (1)
* 2009/0295,158 Cogeneration System 2 2009
 
NISSAN MOTOR CO., LTD. (1)
* 4,605,164 Cabin heating arrangement for vehicle having evaporative cooled engine 8 1985
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
CATERPILLAR INC. (1)
* 8,370,052 Engine cooling system onboard diagnostic strategy 1 2009
* Cited By Examiner