Fuel-injection control system for an internal combustion engine

Patent · Tue Apr 26 00:00:00 EDT 1988

OSTI ID:7224508

Wataya, S; Kishimoto, Y

In an internal combustion engine in which air is sucked into an engine proper by way of an intake passage through a throttle valve disposed therein, and in which fuel is injected into the intake passage through fuel injection means so as to admix with the intake air to form a combustible mixture, there being a bypass conduit connecting between an upstream portion and a downstream portion of the intake passage with respect to the throttle valve for bypassing a part of the intake air across the throttle valve with a bypass valve disposed in the bypass conduit for controlling the flow of intake air passing therethrough, a fuel-injection control system is described comprising: an intake-air sensor for detecting a certain factor of the intake air sucked into the engine proper; a throttle-opening sensor adapted to generate an output signal representative of the opening degree of the throttle valve; a temperature sensor adapted to generate an output signal representative of the temperature of an engine coolant; an engine RPM sensor adapted to generate an output signal representative of the RPMs of the engine proper; and a control unit adapted to receive output signals of the sensors for controlling the operations of the fuel injection means on the basis of the information on engine operating conditions obtained from the sensors.

• Assignee: Mitsubishi Denki Kabushiki Kaisha
• Patent Number(s): US 4739
• OSTI ID: 7224508
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR FLOW
CONTROL EQUIPMENT
CONTROL SYSTEMS
DESIGN
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
FUEL-AIR RATIO
GAS FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MEASURING INSTRUMENTS
METERING
OPERATION
TEMPERATURE MEASUREMENT
VALVES
VELOCIMETERS
VELOCITY