Fuel supply control system for an internal combustion engine

Patent · Tue Feb 25 00:00:00 EST 1986

OSTI ID:6045802

Ishigami, K

This patent describes a fuel supply control system for an internal combustion engine having a combustion chamber, an air passage leading to the combustion chamber for conducting air to the combustion chamber, a throttle valve disposed in the air passage for adjusting the rate of air flow into the combustion chamber, and a compressor disposed in the air passage at a point upstream of the throttle valve for compressing the air. The system consists of: (a) a flow meter disposed in the air passage at a point upstream of the compressor for sensing the rate of air flow through the air passage; (b) first means, responsive to the flow meter, for injecting fuel into the air passage at a point downstream of the throttle valve at a rate having a preset relationship with the sensed air flow rate; (c) second means for sensing whether or not the throttle valve is closed; and (d) third means, responsive to the second means, for limiting the fuel injection rate to no more than a predetermined level regardless of the preset relationship between the fuel injection rate and the sensed air flow rate when the throttle valve is closed.

• Assignee: Nissan Motor Co., Ltd., Yokohama
• Patent Number(s): US 4572139
• OSTI ID: 6045802
• Resource Relation: Patent File Date: Filed date 15 Aug 1984
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
COMPUTERIZED CONTROL SYSTEMS
FUEL INJECTION SYSTEMS
AIR FLOW
COMBUSTION CHAMBERS
COMPRESSION
COMPRESSORS
FLOW RATE
FLOWMETERS
FUEL-AIR RATIO
VALVES
CONTROL EQUIPMENT
CONTROL SYSTEMS
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FUEL SYSTEMS
GAS FLOW
HEAT ENGINES
MEASURING INSTRUMENTS
METERS
330100* - Internal Combustion Engines