Fuel injection control means for internal combustion engines

Patent · Tue Feb 10 04:00:00 EST 1987

OSTI ID:6778624

Yoshimura, T; Sameshima, M; Nakanishi, T; Kato, S

An engine intake system is described including first intake passage means leading to combustion chamber means, second intake passage means substantially separated from the first intake passage means and leading to the combustion chamber means, and shut-off valve means provided in the second intake passage means for closing the second intake passage means under a light load engine operation. A first fuel injection valve means is provided in the first intake passage means, and a second fuel injection valve means is provided in the second intake passage means. A fuel injection control operates the first fuel injection valve means under a first engine operating condition and for operates the first and second fuel injection valve means under a second engine operated condition. The control means includes means for determining a basic fuel supply quantity in accordance with an engine operating condition and compensating means for determining a compensation factor, which changes in accordance with engine speed, for momentarily changing the fuel supply based on the basic fuel supply quantity in a transient period between the first and second operating conditions in accordance with the engine speed so that a stepwise change in engine output torque can be avoided.

• Assignee: Mazda Motor Corp., Hiroshima
• Patent Number(s): US 4641620
• OSTI ID: 6778624
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
COMBUSTION CHAMBERS
CONTROL EQUIPMENT
CONTROL SYSTEMS
ENGINES
EQUIPMENT
FLOW REGULATORS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
HEAT ENGINES
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
MECHANICAL STRUCTURES
TORQUE
TRANSIENTS
VALVES
VELOCITY