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

Exhaust gas recirculation system

Patent ·
OSTI ID:5453330
An EGR assembly is disclosed of a sonic flow EGR valve and a fluid pressure actuated servo operated by air pressure modified by an air bleed device controlled in response to changes in carburetor venturi vacuum levels to provide EGR valve openings in proportion to engine air flow increases.
Assignee:
Ford Motor Co.
Patent Number(s):
US 4398524
OSTI ID:
5453330
Country of Publication:
United States
Language:
English