Engine control method and device

Details Engine control method and device Engine control method and device

2008-01-29

2008-01-29

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

Reexamination Certificate

active

07324891

ABSTRACT:
An engine control method and compensation suitable for the case that both of two manifold pressure sensors in individual groups have failed. When detection outputs from two manifold pressure sensors are different from each other, a first comparing section determines that one of the two sensors is abnormal. A manifold pressure estimating section calculates an estimated manifold pressure value according to an engine speed, throttle opening, and atmospheric pressure. A calculating section calculates a difference ΔPMb between the detection output PMb and the estimated value PMcal. A calculating section calculates a difference ΔPMa between the detection output PMa and the estimated value PMcal. A second comparing section identifies an abnormal one of these two manifold pressure sensors corresponding to a larger one of these differences ΔPMa and ΔPMb. When the remaining manifold pressure sensor has also failed, the estimated value PMcal is used as a substitutional value, then continuing the engine control.

REFERENCES:
patent: 6820470 (2004-11-01), Shidara et al.
patent: 7203594 (2007-04-01), Hasegawa
patent: 10-176582 (1998-06-01), None
patent: 2003-307152 (2003-10-01), None
patent: 2005-307782 (2005-11-01), None

Affiliated with

Also associated with

Rating

Engine control method and device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Engine control method and device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Engine control method and device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2811005