Prediction method for engine mass air flow per cylinder

Details Prediction method for engine mass air flow per cylinder Prediction method for engine mass air flow per cylinder

1992-09-23

1996-03-05

Teska, Kevin J.

Boots, shoes, and leggings

731182, 123480, 123488, 36443103, F02B 304

Patent

active

054973295

ABSTRACT:
A delta model is used to calculate a predicted manifold absolute pressure MAP for a future period and the air mass induced in each cylinder is calculated from such a predicted value and used to determine the correct amount of fuel to inject at that period. Several reference pulses generated for each crankshaft revolution establish one or more sets of equally spaced points at which measurements are made of the parameters MAP, throttle position, exhaust gas recirculation value and idle air control. A base value of MAP is calculated, trends of changes in the parameters are calculated for each set of points, and weighted values of the trends are summed with the base value to predict a value of MAP. Alternatively, mass air flow MAF is measured as well as the other parameters and mass air per cylinder MAC is calculated. Then a base value of MAC is calculated, trends of changes in the parameters are calculated for each set of points, and weighted values of the trends are summed with the base value to predict a value of mass air induced into a cylinder.

REFERENCES:
patent: 4424568 (1984-01-01), Nishimura et al.
patent: 4630206 (1986-12-01), Amamo et al.
patent: 4677559 (1987-06-01), Van Bru/ ck
patent: 4706634 (1987-11-01), Nishikawa et al.
patent: 4893244 (1990-01-01), Tang et al.
patent: 4897791 (1990-01-01), Sekozawa et al.
patent: 4951209 (1990-08-01), Nagaishi et al.
patent: 4959789 (1990-09-01), Nakamura
patent: 4987888 (1991-01-01), Funabashi et al.
patent: 5255209 (1993-10-01), Krebs
patent: 5270935 (1993-12-01), Dudek et al.
patent: 5274559 (1993-12-01), Takahashi et al.
patent: 5394331 (1995-02-01), Dudek et al.

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