Electronic control system for internal combustion engines

Patent · Mon Mar 23 23:00:00 EST 1981

OSTI ID:6368243

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

In an exhaust gas recirculation system adapted to an internal combustion engine, the system comprises a servomotor to be operated by pneumatic pressure and a control valve actuated by the servomotor to control the quantity of exhaust gases recirculated into an intake manifold from an exhaust pipe. The pneumatic pressure applied to the servomotor is electrically controlled without undesired errors 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 servomotor, 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 4257382
• OSTI ID: 6368243
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
330700 -- Advanced Propulsion Systems-- Emission Control
COMPUTERIZED CONTROL SYSTEMS
COMPUTERS
CONTROL
CONTROL EQUIPMENT
CONTROL SYSTEMS
DIGITAL COMPUTERS
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FLOW REGULATORS
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
PIPES
POLLUTION CONTROL EQUIPMENT
PRESSURE CONTROL
VALVES
WASTES