Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1996-01-16
1997-04-29
Nelli, Raymond A.
Internal-combustion engines
Charge forming device
Fuel injection system
F02M 5100
Patent
active
056239084
ABSTRACT:
An engine controller compensates for changes in air pressure and intake of the engine during engine crank which are caused by injection of fuel into the intake. The engine controller compares rotational speed of the engine to a threshold value and determines a cylinder air charge value in a first manner if the engine speed is greater than or equal to the threshold value. If the engine speed is less than the threshold value then the reliability of an air meter positioned in the intake is tested and if the air meter is determined to be of sufficient reliability then the cylinder air charge is determined in a second manner. If the air meter is determined to be unreliable then the operability of a throttle position sensor is determined and if the throttle position sensor is determined to be operable then the cylinder air charge is determined in a third manner. If the throttle position sensor is determined to be inoperable then the cylinder air charge is determined in a fourth manner which utilizes a rotational speed of the engine to provide an indication of the effect on the air meter of pressure in the intake caused by injection of fuel into the intake.
REFERENCES:
patent: 4564907 (1986-01-01), Mouri et al.
patent: 5188082 (1993-02-01), Udo et al.
patent: 5201217 (1993-04-01), Wachi
patent: 5289809 (1994-03-01), Kamiya et al.
patent: 5408975 (1995-04-01), Blakeslee et al.
patent: 5492101 (1996-02-01), Saito et al.
patent: 5515831 (1996-05-01), Tonekawa
LeRoux Mark D.
Locke Jay C.
Roman Lawrence E.
Ford Motor Company
Lippa Allan J.
May Roger L.
Nelli Raymond A.
LandOfFree
Engine controller with air meter compensation during engine cran does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Engine controller with air meter compensation during engine cran, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Engine controller with air meter compensation during engine cran will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-699521