Fuel injection control based on spill port opening timing correction

Patent · Tue Aug 30 00:00:00 EDT 1988

OSTI ID:6526388

Ban, M; Miyaki, M; Hasegawa, T; Kobayashi, F; Kobashi, M

This patent describes a fuel injection control system for an internal combustion engine, comprising: (a) a fuel injection pump including: a pump chamber; a low pressure chamber; plunger means reciprocating in synchronism with rotation of the engine for introducing fuel into the pump chamber, and for feeding the fuel under pressure from the pump chamber to a cylinder of the engine, detector means for detecting a reference position of the plunger, and for generating a detection signal indicative of the reference position, and a spill port coupled to the pump chamber and in communication with the low pressure chamber, (b) solenoid valve means for opening and closing the spill port; (c) first circuit means including first and second adjusting resistors, the first circuit means being replaceably disposed on the fuel injection pump; (d) first control means for calculating a fuel injection time period according to operating conditions of the engine; (e) second control means including second circuit means comprising first and second fixed resistors, the first fixed resistor being connected to the first adjusting resistor so as to produce a first voltage signal corresponding to a ratio of a resistance value of the first adjusting resistor to a resistance value of the first fixed resistor.

• Assignee: Nippondenso Co., Ltd., Kariya and Toyota Jidosha Kabushiki Kaisha, Toyota
• Patent Number(s): US 4766864
• OSTI ID: 6526388
• Resource Relation: Patent File Date: Filed date 27 Mar 1986
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
FUEL INJECTION SYSTEMS
COMPUTERIZED CONTROL SYSTEMS
INTERNAL COMBUSTION ENGINES
CORRECTIONS
DESIGN
DUCTS
OPERATION
PUMPS
TIMING PROPERTIES
VALVES
CONTROL EQUIPMENT
CONTROL SYSTEMS
ENGINES
EQUIPMENT
FLOW REGULATORS
FUEL SYSTEMS
HEAT ENGINES
330100* - Internal Combustion Engines
990220 - Computers
Computerized Models
& Computer Programs- (1987-1989)