Engine stop determination device and engine stop determination method
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United States of America Patent
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Mar 3, 2015
Grant Date -
Aug 23, 2012
app pub date -
Oct 13, 2010
filing date -
Nov 5, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A cooling system for an engine in the present invention includes a first coolant route for circulating coolant between a water jacket of an engine main body and a heater core, a second coolant route for circulating the coolant between a waste heat recovery unit and the heater core, a first water-temperature sensor provided on the first coolant route, and a second water-temperature sensor provided on the second coolant route. An engine control unit makes an engine stop determination based on the coolant temperatures detected by the first water-temperature sensor and the second water-temperature sensor and, in making the engine stop determination, selectively uses the coolant temperatures detected by the first water-temperature sensor and the second water-temperature sensor in dependence on whether a heater unit including the heater core is in an operation state or in an out-of-operation state.
First Claim
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International Classification(s)
- B60W:CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT....
- F02N:STARTING OF COMBUSTION ENGINES
- G06F:ELECTRIC DIGITAL DATA PROCESSING
- F01P:COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING....
- G06G:ANALOGUE COMPUTERS
- F02D:CONTROLLING COMBUSTION ENGINES
- F02G:HOT-GAS OR COMBUSTION- PRODUCT POSITIVE-DISPLaCEME....
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