Fuel injection control method

Details Fuel injection control method Fuel injection control method

2007-07-17

2007-07-17

Argenbright, T. M. (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S478000

Reexamination Certificate

active

11204350

ABSTRACT:
An injection timing for supplying a fuel by one injection per two rotations to a single-cylinder four-cycle engine of a fixed spark advance ignition system is decided on the basis of a simple system. With respect to ignition signals A1, B1, A2, B2, . . . generated every one rotation of the engine, an intake pipe pressure lowering state exists in one ignition signal cycle A1-B2, and the intake pipe pressure lowering state does not exist in the next ignition signal cycle B2-A2. The signal B1corresponds to a terminal phase of an exhaust stroke and the signal A2corresponds to a terminal phase of a compression stroke if these two conditions are established, and an injection timing is decided on the basis of the determination in such a manner that the fuel injection burnt by the ignition of A2is executed at one time during two rotations.

REFERENCES:
patent: 5325835 (1994-07-01), Kimata et al.
patent: 6626153 (2003-09-01), Hirano et al.
patent: 2001-207902 (2001-08-01), None
patent: 2002-364435 (2002-12-01), None

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