Engine exhaust gas recirculating control
Patent
·
OSTI ID:7290484
An exhaust gas recirculating system for an internal combustion engine is described. A throttle valve controls flow through a carburetor induction passage, comprising a duct connecting the exhaust gases to the engine intake manifold, and a valve normally closing the duct to prevent recirculation and movable to an open position by a signal vacuum. Changes in engine manifold vacuum change the signal force to another valve which varies from an ambient (essentially atmospheric) pressure level at closed throttle positions to manifold vacuum levels at wide open throttle positions.
- Assignee:
- Ford Motor Co.
- Patent Number(s):
- US 3930475
- OSTI ID:
- 7290484
- Country of Publication:
- United States
- Language:
- English
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