Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Exhaust gas recirculation system

Patent ·
OSTI ID:7209369
A valve, the opening degree of which is decreased with rise in the intake manifold vacuum, is located in an exhaust gas recirculation conduit at the downstream of another valve, the opening degree of which is increased with rise in the vacuum at a port opening to the carburetor in the neighborhood of the periphery of the throttle valve in its closed position.
Assignee:
Nissan Motor Co., Ltd.
Patent Number(s):
US 4033306
OSTI ID:
7209369
Country of Publication:
United States
Language:
English