System for controlling the operation of an internal combustion engine

Patent · Tue Feb 28 04:00:00 EST 1989

OSTI ID:6051961

Nishikawa, T; Hanada, K; Nishimura, Y; Shimomura, S

An engine control system is described, comprising: an air-flow sensor detecting a flow rate of intake air sucked into an engine through an intake passage; an engine revolution-cycle sensor detecting a cycle of engine revolutions; a first means for determining an average flow rate of intake air by sampling the row rate of intake air detected by the air-flow sensor at the cycle detected by the engine revolution-cycle sensor; a second means for determining net flow rate of intake air actually sucked into the engine as an intake air parameter representative of an engine load on the basis of a predetermined formula in which the net flow rate of intake air to be determined is represented by the net flow rate of intake air previously determined by the use of an intrinsic volume of a portion of the intake passage downstream of a throttle valve, compression ratio of the engine, displacement of the engine, average flow rate of intake air determined by the first means, and the cycle of engine revolutions determined by the engine revolution-cycle sensor; and electronic fuel injection control means for regulating fuel injection based upon the intake air parameter determined by the second means.

• Assignee: Mazda Motor Corp. and Mitsubishi Denki Kabushiki Kaisha
• Patent Number(s): US 4807581
• OSTI ID: 6051961
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR FLOW
CONTROL SYSTEMS
ELECTRONIC EQUIPMENT
ENGINES
EQUIPMENT
FLOW RATE
FLOWMETERS
FLUID FLOW
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
FUEL-AIR RATIO
GAS FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MEASURING INSTRUMENTS
METERS
OPERATION