Control apparatus, control method, and engine control unit

Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C123S321000, C123S347000

Reexamination Certificate

active

07493207

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 modified errors by multiplying e.g. an air-fuel ratio error estimated value by link weight functions, calculates basic local correction values such that the modified errors become equal to 0; calculates local correction values by multiplying the basic local correction values and the like by the link weight functions; calculates corrected valve lift by adding a lift correction value, which is the total sum of the local correction values, to a value of valve lift; calculates a first estimated intake air amount for feedforward control of an air-fuel ratio, based on 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 based on 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: 199 42 673 A 1 (2000-04-01), None
patent: 6-213020 (1994-08-01), None
patent: 2000-274302 (2000-10-01), None
patent: 2005-315161 (2005-11-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

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

     

Profile ID: LFUS-PAI-O-4102270

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.