Method and apparatus for determining coolant temperature...

Details Method and apparatus for determining coolant temperature... Method and apparatus for determining coolant temperature...

2005-08-23

2005-08-23

Norman, Marc (Department: 3744)

Refrigeration

With indicator or tester

Condition sensing

C701S034000, C073S118040, C123S041010

Reexamination Certificate

active

06931865

ABSTRACT:
Methods, systems and devices for identifying irrational results from an engine coolant temperature (ECT) sensor in a vehicle are described. The vehicle suitably includes a processor in communication with the ECT sensor and an intake air temperature (IAT) sensor. The method includes the steps of receiving an ECT reading from the ECT sensor and a IAT reading at the processor, evaluating a temperature difference between the ECT reading and the IAT reading to determine if irrationality is present, and providing a fault indication in response to the evaluating step. The evaluating step includes monitoring the IAT reading during operation of the vehicle to identify the presence of an engine block heater if the temperature difference exceeds a pre-determined threshold.

REFERENCES:
patent: 5714673 (1998-02-01), Bidner et al.
patent: 5781877 (1998-07-01), Rachel et al.
patent: 6128948 (2000-10-01), Shi et al.
patent: 6302065 (2001-10-01), Davison
patent: 6393357 (2002-05-01), Holmes et al.
patent: 6463892 (2002-10-01), Russell
patent: 6714854 (2004-03-01), Linenberg et al.
patent: 6732025 (2004-05-01), Reese et al.
patent: 6848434 (2005-02-01), Li et al.
patent: 2002/0099482 (2002-07-01), Reese et al.

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