Engine air-to-fuel ratio control system

Patent · Tue Apr 18 04:00:00 EST 1978

OSTI ID:7098024

Hattori, T; Iwata, T; Nakase, T

A system for controlling an air-to-fuel ratio of a gas mixture supplied to a vehicle engine to a correct valve is disclosed. In response to an output signal from a discriminator circuit which receives as inputs a signal from an air-to-fuel ratio detector mounted in an exhaust pipe and simultaneously in response to a signal from an aperture detector which detects the aperture of a control valve mounted in an adjusting air path provided parallel to a carburetor, a pulse motor for adjusting the aperture of the control valve provided in the air path is driven to obtain a correct air-to-fuel ratio.

• Assignee: Nippon Soken, Inc.
• Patent Number(s): US 4084560
• OSTI ID: 7098024
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330603* -- Vehicle Design Factors-- Engine System
330702 -- Emission Control-- Carbon Monoxide
330704 -- Emission Control-- Hydrocarbons
AIR POLLUTION ABATEMENT
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CONTROL EQUIPMENT
DESIGN
DISCRIMINATORS
ELECTRONIC CIRCUITS
ENGINES
EQUIPMENT
EXHAUST GASES
FLOW REGULATORS
FUEL ECONOMY
FUEL SYSTEMS
FUEL-AIR RATIO
GASEOUS WASTES
HYDROCARBONS
INTERNAL COMBUSTION ENGINES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
POLLUTION CONTROL EQUIPMENT
VALVES
WASTES