Fuel supply control system for an internal combustion engine

Patent · Tue Feb 25 04:00:00 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
• Country of Publication: United States
• Language: English

Related Subjects

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