Air-fuel ratio feedback control system for internal combustion engines, having function of correcting position of air/fuel ratio control valve actuator

Patent · Tue Jul 19 00:00:00 EDT 1983

OSTI ID:5486492

Otsuka, K; Hasegawa, S; Narasaka, S

An air/fuel ratio feedback control system for internal combustion engines is disclosed, which is arranged such that when a pulse motor for driving an air/fuel ratio control valve passes the switching point of position detecting means during feedback control operation, a value indicative of the number of steps corresponding to the reference position of the pulse motor, stored in a memory in an electrical circuit for driving the pulse motor is simultaneously shifted to an actual position counter. Air/fuel ratio control can be achieved with accuracy on the basis of a count in the above actual position counter which thus exactly corresponds to the actual position of the pulse motor.

• Assignee: Honda Motor Co., Ltd. (Japan)
• Patent Number(s): US 4393843
• OSTI ID: 5486492
• Resource Relation: Patent Priority Date: Priority date 7 Aug 1980, Japan; Other Information: PAT-APPL-288528
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
FUEL-AIR RATIO
CONTROL SYSTEMS
INTERNAL COMBUSTION ENGINES
ACTUATORS
CORRECTIONS
ELECTRONIC CIRCUITS
FEEDBACK
PULSES
VALVES
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
HEAT ENGINES
330100* - Internal Combustion Engines