Fuel supply control system for an internal combustion engine

Patent · Tue Sep 06 04:00:00 EDT 1988

OSTI ID:6557553

Nishida, M

This patent describes an internal combustion engine which is adapted to be supplied with fuel by fuel injection means and in which is part of exhaust gas discharged from the engine proper is adjustable recirculated to a location downstream of a throttle valve in an intake pipe, a fuel supply control system comprising: an engine revolutions per minute (RPM) detecting means for detecting the number of revolutions per minute of the engine; a pressure detecting means for detecting manifold pressure of the intake gases in the portion of the intake pipe downstream of the throttle valve; an oxygen density detecting means for detecting the density of the oxygen in the intake gases in the intake pipe after a part of the engine exhaust gas has been recirculated to the intake pipe downstream of the throttle valve; a memory means for prestoring data determining the amount of fuel to be supplied to the engine in the absence of the exhaust gas recirculation and corresponding to respective engine operating conditions which are determined by the manifold pressure of the intake gases downstream of the throttle valve detected by the pressure detecting means and the engine RPM detected by the engine RPM detecting means, the data being classified in a two dimensional manner.

• Assignee: Mitsubishi Denki Kabushiki Kaisha
• Patent Number(s): US 4768491
• OSTI ID: 6557553
• 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)
COMPUTERIZED CONTROL SYSTEMS
CONTROL EQUIPMENT
CONTROL SYSTEMS
DESIGN
ENGINES
EQUIPMENT
FLOW REGULATORS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MEASURING INSTRUMENTS
MEMORY DEVICES
PRESSURE MEASUREMENT
TIMING PROPERTIES
VALVES
VELOCIMETERS