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

Exhaust gas recirculation system for internal combustion engines

Patent ·
OSTI ID:5049794
An exhaust gas recirculation system for an internal combustion engine employs a vacuum actuator for a control valve in the exhaust gas recirculation passageway. A suction conduit to the actuator contains a magnetic valve for venting the suction conduit to atmosphere. The operating means for the magnetic valve includes a vacuum switch responsive to suction pressure in the engine intake passage modified by atmosphere pressure compensation means. A second magnetic valve responsive to engine speed also vents the suction conduit to atmosphere.
Assignee:
Honda Giken Kogyo K K (Japan)
Patent Number(s):
US 4327700
OSTI ID:
5049794
Country of Publication:
United States
Language:
English