Metering exhaust gas recirculation apparatus and system
An exhaust gas recirculation device for the control of nitrogen oxide emissions from automotive internal combustion engines is described that provides for the metered control of exhaust recirculation to the intake manifold in response to engine operation conditions. A valve assembly that is exposed to the comparatively low pressure of the intake manifold interior and is also connected to the exhaust system controls the volume rate of exhaust gas recirculated. A spring-loaded pressure responsive diaphragm in the valve assembly is connected to a stem carrying a valve that is movable to any of several general operating positions for the opening and closing of an associated port leading to the intake manifold. The valve means is closed during periods of engine idle and deceleration and is open to permit a maximum volume rate of exhaust recirculation during periods of acceleration.
- Assignee:
- Colt Industries Operating Corp.
- Patent Number(s):
- US 3828746
- OSTI ID:
- 7319880
- Country of Publication:
- United States
- Language:
- English
Similar Records
Exhaust gas recirculator
Exhaust gas recirculation system for an internal combustion engine
Related Subjects
330701* -- Emission Control-- Nitrogen Oxides
AIR POLLUTION CONTROL
AUTOMOBILES
CHALCOGENIDES
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FLOW REGULATORS
INTERNAL COMBUSTION ENGINES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OPERATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
PRESSURE DEPENDENCE
VALVES
VEHICLES