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U.S. Department of Energy
Office of Scientific and Technical Information

Exhaust gas recirculation system for internal combustion engine

Patent ·
OSTI ID:5151232
An exhaust gas recirculation system for an internal combustion engine employs a first control valve in an exhaust gas introduction passageway, a second control valve in an air conduit connecting the engine intake passage to atmosphere, and a regulating valve responsive to differential vacuum intensities for operating vacuum-responsive actuators for the control valves. A recirculation stop valve vents to atmosphere the actuator for the second control valve in response to an engine operating condition, to stop recirculation of exhaust gas.
Assignee:
Honda Giken Kogyo K K (Japan)
Patent Number(s):
US 4325348
OSTI ID:
5151232
Country of Publication:
United States
Language:
English