Fuel injection control device for internal combustion engine

Patent · Tue Oct 21 04:00:00 EDT 1986

OSTI ID:7069012

Nakajima, T

This patent describes a fuel injection device for an internal combustion engine. The device comprises means for generating a basic fuel injection time signal based on at least one signal selected from among a signal representing the revolution number of an engine, a PB sensor signal, and a throttle signal. The device also comprises a means for generating an actual fuel injection time signal by compensating the basic fuel injection time signal based on at least one signal selected from among an engine temperature signal and an intake air temperature signal. A means for controlling durations of keeping open the valves of injectors is provided for the separate cylinders of the internal combustion engine, based on the actual fuel injection time signal thereby controlling the amounts of fuel injection into the separate cylinders. The device is further provided with the following: means for detecting a top dead center signal and an injection discriminating signal, means for computing a signal representing a revolution number of the engine based on the top dead center signal, a timer counter for constantly taking count of clock pulses, and a register adapted to permit setting therein of a first present value produced, upon occurrence of a top dead center signal, by addition of a count value existing then in the timer counter to a value corresponding to an expected delay time.

• Assignee: Honda Giken Kogyo Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4617899
• OSTI ID: 7069012
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR FLOW
COMPARATOR CIRCUITS
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
CYLINDERS
ELECTRONIC CIRCUITS
ENGINES
FLUID FLOW
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
GAS FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
PULSES
SIGNALS
TEMPERATURE DEPENDENCE
TIMING CIRCUITS