Exhaust gas recirculation system

Patent · Tue Jun 10 04:00:00 EDT 1980

OSTI ID:5645807

Kawai, N; Yamamoto, H

An exhaust gas recirculation system for use in an internal combustion engine includes an intake manifold having a riser portion serving as a heating source for an intake mixture charge, an exhaust gas recirculation passage running from an exhaust manifold to an intake system for introducing part of exhaust gases from the former to the latter, and a temperature-responsive valve provided in the intake manifold in such a position as to be able to detect the temperature of the riser portion for controlling the flow rate of the recirculation exhaust gases, in accordance with the temperature of the riser position. In this exhaust gas recirculation system, the flow rate of exhaust gases to be recirculated from the exhaust manifold to the intake system may be increased by one step, or two steps, as required, in response to the temperature of the riser portion, by means of a modified temperature responsive valve attached to the intake system.

• Assignee: Toyota Jidosha Kogyo K K (Japan)
• Patent Number(s): US 4206729
• OSTI ID: 5645807
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
330700 -- Advanced Propulsion Systems-- Emission Control
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FLOW RATE
FLOW REGULATORS
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
HEATING
INTAKE
INTERNAL COMBUSTION ENGINES
POLLUTION CONTROL EQUIPMENT
TEMPERATURE DEPENDENCE
VALVES
WASTES