Data processing: measuring – calibrating – or testing – Measurement system – Temperature measuring system
Reexamination Certificate
2006-08-01
2006-08-01
Barlow, John (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system
Temperature measuring system
C374S001000
Reexamination Certificate
active
07085671
ABSTRACT:
An abnormality detection apparatus of an engine temperature adjusting thermostat is provided which is capable of accurately grasping the state of an amount of heat generated by an engine to prevent misdetection of abnormality in the thermostat for improved reliabilty. The abnormality detection apparatus includes a heat amount parameter detection section for detecting an operating condition related to an amount of heat generated by the engine as a heat amount parameter (EQ), an abnormality determination section for comparing the temperature of cooling water with a predetermined allowable lower limit to determine abnormality of the thermostat when the heat amount parameter (EQ) reaches a reference heat amount (EQo), a small heat amount determination section for determining whether the amount of heat generated by the engine is in a small amount state, a large heat amount determination section for determining whether the amount of heat generated by the engine is in a large amount state, and an abnormality determination prohibition section for disabling the abnormality determination section when at least one of the small amount state and the large amount state of the amount of heat is determined.
REFERENCES:
patent: 6200021 (2001-03-01), Mitsutani et al.
patent: 10-184433 (1998-07-01), None
patent: 11-141337 (1999-05-01), None
patent: 2000-104549 (2000-04-01), None
patent: 2000-320389 (2000-11-01), None
Fujimoto Shinya
Matsumoto Norio
Barlow John
Mitsubishi Denki & Kabushiki Kaisha
Sun Xiuqin
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