Digital control device for a fuel injection system of an internal combustion engine

Patent · Tue Feb 19 00:00:00 EST 1980

OSTI ID:5684162

Aoki, K

Disclosed is a digital control device for controlling at least one of the solenoids of the fuel injection valves associated with an internal combustion engine in accordance with both the amount of air introduced into the engine and the number of revolutions of the engine. The digital control device comprises two pulse generating means, a switching element, a binary counter, and a digital computer. A pulse signal provided from a pulse generating means and exhibiting a pulse width which is inversely proportional to the number of revolutions of the engine, causes the switching element to close. Pulse signals provided from other pulse generating means, each signal having a frequency which is proportional to the amount of air introduced into the engine, pass through the switching element during the conducting period of the switching element. The number of the passing pulse signals is thereby counted by the binary counter. The digital signal provided from the binary counter is applied to the digital computer so as to perform arithmetic functions for controlling the solenoids of the fuel injection valves.

• Assignee: Toyota Jidosha Kogyo K K (Japan)
• Patent Number(s): US 4188922
• OSTI ID: 5684162
• Resource Relation: Patent Priority Date: Priority date 16 Nov 1976, Japan; Other Information: PAT-APPL-846359
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
FUEL INJECTION SYSTEMS
DIGITAL SYSTEMS
INTERNAL COMBUSTION ENGINES
AIR FLOW
CONTROL SYSTEMS
FLOW RATE
PULSE GENERATORS
SOLENOIDS
SWITCHES
VALVES
CONTROL EQUIPMENT
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FUEL SYSTEMS
FUNCTION GENERATORS
GAS FLOW
HEAT ENGINES
330100* - Internal Combustion Engines