Method and apparatus for monitoring an intake air filter

Details Method and apparatus for monitoring an intake air filter Method and apparatus for monitoring an intake air filter

2007-01-31

2008-10-28

Wolfe, Jr., Willis R. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C123S361000, C123S399000

Reexamination Certificate

active

07444234

ABSTRACT:
There is provided a method and system for monitoring an intake air filter for an internal combustion engine of a hybrid powertrain operative to transmit an output torque to a driveline. The engine has a controllable throttle valve. The method comprises determining a first pressure state comprising an ambient barometric pressure. A second pressure state is determined downstream of the air filter during engine operation at a high flow engine operating point. The hybrid powertrain is controlled to maintain the transmitted output torque to the driveline. The first and second pressure states are compared.

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Anonymous; Learning the Maximum Throttle Sensor Positions on ETC Vehicles; Sep. 2006; Publ. No. 509059; Research Disclosure; www.researchdisclosure.com; New York, NY, USA.

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