Fuel supply control apparatus for internal combustion engine

Patent · Tue Jan 26 04:00:00 EST 1988

OSTI ID:5401029

Kanno, Y; Nakamoto, K; Sumitani, J

A fuel supply control apparatus for an internal combustion engine is described provided with a throttle valve for adjusting an air intake quantity of the internal combustion engine to be controlled, an air flow sensor for detecting the air intake quantity adjusted by the throttle valve, and AN detecting means which detects the output of the air flow sensor at a predetermined crank angle of the internal combustion engine to thereby detect a ratio of the output to the number of revolutions of the internal combustion engine. An AN computing means which, when the detecting result of the AN detecting means is represented by Qa, the (n-1)th air intake quantity and (n)th air intake quantity by the internal combustion engine at the predetermined crank angles thereof are represented by Qe(n-1) and Qe(n) respectively, and the filter constant is represented by K, computes Qe(n) from the following equation: Qe(n)=K . Qe(n-1)+(1-K) . Qa and a control means for controlling a fuel supply quantity to the internal combustion engine on the basis of the output Qe(n) of the AN computing means, is characterized in that the filter constant K is varied corresponding to an operating condition of the internal combustion engine.

• Assignee: Mitsubishi Denki Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4721087
• OSTI ID: 5401029
• 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 EQUIPMENT
CONTROL SYSTEMS
DESIGN
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
FUEL-AIR RATIO
GAS FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
OPERATION
VALVES