Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2002-03-19
2004-10-12
Wolfe, Willis R. (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C701S114000, C060S602000, C060S605200
Reexamination Certificate
active
06804601
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to systems for controlling the operation of an internal combustion engine in the event of a sensor failure, and more specifically to such systems operable to control an air handling system of the engine in the event of such a failure.
BACKGROUND AND SUMMARY OF THE INVENTION
A wide variety of engine and/or vehicle operating condition sensors have been developed to provide information useful for controlling engine and/or vehicle operation. Many such sensors provide information that is critical to the control of engine operation, and engine operation may be compromised when such sensors fail.
In the event of critical sensor failure, modern engine control techniques typically implement one or more known recovery strategies. One such recovery strategy serves to derate engine fueling, and another known strategy implements one or more so-called “limp home” algorithms that allow the vehicle carrying the engine to operate with minimum functionality until engine/vehicle service can be provided.
Oftentimes, such critical failures do not extend to failure of other system componentry, and are instead confined only to failure of one or more sensors. What is therefore needed is a sensor failure accommodation system that allows for greater engine/vehicle functionality upon detection of one or more sensor failures. The present invention provides such a sensor failure accommodation system.
These and other objects of the present invention will become more apparent from the following description of the preferred embodiments.
REFERENCES:
patent: 4450815 (1984-05-01), Mouri
patent: 4556029 (1985-12-01), Yamaguchi et al.
patent: 4804139 (1989-02-01), Bier
patent: 4943924 (1990-07-01), Kanegae et al.
patent: 5073865 (1991-12-01), Togai et al.
patent: 5377112 (1994-12-01), Brown, Jr. et al.
patent: 5526266 (1996-06-01), Rutan et al.
patent: 5910176 (1999-06-01), Creger
patent: 6202412 (2001-03-01), Lange et al.
patent: 6253551 (2001-07-01), Lohmann et al.
patent: 6298718 (2001-10-01), Wang
patent: 6314737 (2001-11-01), Springer et al.
patent: 2002/0078925 (2002-06-01), Kobayashi
patent: 2 354 944 (2002-09-01), None
patent: 19705766 (1998-08-01), None
patent: 2297394 (1996-07-01), None
patent: 08232749 (1996-09-01), None
patent: 90588 (2001-03-01), None
Baker Danny R.
Brunemann George
Robinson Dennis
Wang Yue Yun
Barnes & Thornburg
Cummins Inc.
Wolfe Willis R.
LandOfFree
Sensor failure accommodation system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sensor failure accommodation system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sensor failure accommodation system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3261648