Electronic control system for internal combustion engines

Patent · Mon Feb 02 23:00:00 EST 1981

OSTI ID:6344478

Ina, T; Kawai, H; Kobashi, K; Kohama, T; Matsui, T; Nishimatsu, A; Nohira, H

In a carburetor and an exhaust gas recirculation system adapted to an internal combustion engine, the system comprises a first servomotor to be operated by pneumatic pressure and a first control valve actuated by the first servomotor to control the quantity of exhaust gases recirculated into an intake manifold from an exhaust pipe, and the carburetor comprises a second servomotor to be operated by pneumatic pressure and a second control valve actuated by the second servomotor to control the flow quantity of air to be mixed with fuel from a float chamber. The pneumatic pressure applied to the first and second servomotors is electrically controlled to satisfy the following function in relation to the engine intake manifold vacuum and the engine speed: Pe f(Pv, n) where Pe is the pneumatic pressure applied to the servomotors, Pv and N respectively indicate the engine intake manifold vacuum and the engine speed.

• Assignee: Nippon Soken Inc (Japan); Toyota Jidosha Kogyo K K (Japan)
• Patent Number(s): US 4248187
• OSTI ID: 6344478
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
CARBURETORS
COMPUTERS
CONTROL EQUIPMENT
CONTROL SYSTEMS
DIGITAL COMPUTERS
DIGITAL-TO-ANALOG CONVERTERS
ELECTRONIC EQUIPMENT
ENGINES
EQUIPMENT
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FLOW REGULATORS
FUEL SYSTEMS
FUEL-AIR RATIO
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
POLLUTION CONTROL EQUIPMENT
SIGNALS
VALVES