Control apparatus, control method, and engine control unit

Details Control apparatus, control method, and engine control unit Control apparatus, control method, and engine control unit

2007-10-11

2009-02-03

Kwon, John T (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C123S321000, C123S347000

Reexamination Certificate

active

07487031

ABSTRACT:
A control apparatus which is capable of compensating for a control error properly and quickly even under a condition where the control error is temporarily increased e.g. by degradation of reliability of the detection results of reference parameters other than controlled variables, thereby making it possible to ensure a high accuracy of control. An air-fuel ratio controller of the control apparatus calculates an air-fuel ratio error estimated value and an error weight, calculates an modified error, calculates a basic lift correction value such that the modified error becomes equal to 0, calculates a lift correction value, calculates corrected valve lift by adding the lift correction value to valve lift, calculates a first estimated intake air amount for feedforward control of an air-fuel ratio according to the corrected valve lift, calculates an air-fuel ratio correction coefficient for feedback control of the air-fuel ratio, and calculates a fuel injection amount according to these.

REFERENCES:
patent: 5990738 (1999-11-01), Wright et al.
patent: 6591183 (2003-07-01), Ishikawa et al.
patent: 7340336 (2008-03-01), Yasui et al.
patent: 2003/0041823 (2003-03-01), Takemura et al.
patent: 2007/0208486 (2007-09-01), Yasui et al.
patent: 2008/0133066 (2008-06-01), Takenaka
patent: 2008/0172165 (2008-07-01), Tagami et al.

Affiliated with

Also associated with

Rating

Control apparatus, control method, and engine control unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4089210