Method and apparatus to evaluate an intake air temperature...

Details Method and apparatus to evaluate an intake air temperature... Method and apparatus to evaluate an intake air temperature...

2006-10-10

2006-10-10

Vo, Hieu T. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C073S118040

Reexamination Certificate

active

07120535

ABSTRACT:
A control system and method to monitor an intake air temperature sensing circuit for an internal combustion engine is shown. The electronic controller is connected to the intake air temperature sensing circuit, coolant temperature sensor, and a plurality of other engine sensors. The controller determines whether the measured intake air temperature changes in response to a change in actual intake air temperature, based upon the engine operating conditions and the measured intake air temperature. The controller determines whether the measured intake air temperature is representative of actual intake air temperature, based upon the measured intake air temperature, the coolant temperature, and at least one engine operating condition. The invention is an element of an on-board diagnostic system, typically related to vehicle emissions.

REFERENCES:
patent: 5153835 (1992-10-01), Hashimoto et al.
patent: 5880361 (1999-03-01), Taniguchi
patent: 6091324 (2000-07-01), Arsenault et al.
patent: 6208917 (2001-03-01), McKissick, Jr. et al.
patent: 6209821 (2001-04-01), Gary
patent: 6561016 (2003-05-01), Suhre et al.
Service Manual Document # 546739: DTC P0113 Intake Air Temperature (IAT) Sensor Circuit High Voltage.
Service Manual Document # 546738: DTC P0113 Intake Air Temperature (IAT) Sensor Circuit Low Voltage.
Service Manual Document # 546865: DTC P1111 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage.

Affiliated with

Also associated with

Rating

Method and apparatus to evaluate an intake air temperature... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus to evaluate an intake air temperature..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus to evaluate an intake air temperature... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3688061