Fuel controlling system for internal combustion engine

Patent · Tue Mar 07 04:00:00 EST 1989

OSTI ID:6098121

Nakamoto, K; Kanno, Y; Nishiyama, R

This patent describes a fuel control system, consisting of means for detecting the quantity of intake air at a predetermined crank angle on the basis of both the quantity of intake air detected by the intake air quantity sensor and the crank angle detected by the crank angle sensor; means for correcting the output of the predetermined intake air quantity detecting means by performing an arithmetic processing using a predetermined certain correction coefficient; means for detecting the number of revolutions, or the output, of the internal combustion engine on the basis of the detected crank angle; and means which judges that the running condition of the vehicle is a very low speed condition when the number of revolutions of the internal combustion engine detected by the revolution detecting means is below a predetermined value and when the vehicle running speed detected by the vehicle speed sensor is within a predetermined range, and which changes the correction coefficient used in the predetermined intake air quantity correcting means when the vehicle and the internal combustion engine are in the very low speed condition, thereby controlling the quantity of fuel to be fed to the engine in the very low speed condition.

• Assignee: Mitsubishi Denki Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4809664
• OSTI ID: 6098121
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
AIR FLOW
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
DESIGN
ENGINES
FLOW RATE
FLUID FLOW
FUEL SYSTEMS
FUEL-AIR RATIO
GAS FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES