Computing method of engine intake air amount and air fuel...

Details Computing method of engine intake air amount and air fuel... Computing method of engine intake air amount and air fuel...

2005-11-22

2005-11-22

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

C701S104000

Reexamination Certificate

active

06968267

ABSTRACT:
A computing method of an engine intake air amount for determining a fuel injection amount comprises a step of computing an engine intake amount in real time by using a relational expression between an engine speed and an intake manifold pressure expressed by Qc=kc(−a1N−a2P+a3NP+a4N2P+a5NP2) where Qcis an intake air amount of an engine cylinder, kc, a1, a2, a3, a4and a5are constants, N is an engine speed and P is an intake manifold pressure.

REFERENCES:
patent: 4106448 (1978-08-01), Noguchi et al.
patent: 5715797 (1998-02-01), Minagawa et al.
patent: 6530214 (2003-03-01), Ikemoto et al.

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