Diverter valve for exhaust system of internal combustion engine

Patent · Tue Dec 11 00:00:00 EST 1979

OSTI ID:5374775

Klimazewski, L T

A forced air control valve for an air injection system in an internal combustion engine has a diaphragm operated main valve member responsive to the vacuum from intake manifold to divert air from the exhaust system to atmosphere. A separate shifting or diverter valve for the exhaust system is temperature responsive and when the main valve member is open permits the supply of air to the exhaust manifold upstream of a catalytic converter only during cold engine operation. During warm engine operation when the main valve member is open, the separate shifting valve diverts the air to the catalytic converter. Upon deceleration during cold engine operation the separate diverter valve is shifted to divert air from the exhaust manifold to the catalytic converter. A temperature sensitive overheat switch is operable upon overheating of the catalyst to vent to forced air to atmosphere.

• Assignee: ACF Industries, Inc.
• Patent Number(s): US 4177642
• OSTI ID: 5374775
• Resource Relation: Patent File Date: Filed date 23 Dec 1977
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
EXHAUST RECIRCULATION SYSTEMS
POLLUTION CONTROL EQUIPMENT
DESIGN
AIR
CATALYTIC CONVERTERS
CONTROL EQUIPMENT
GAS INJECTION
VALVES
ENGINES
EQUIPMENT
EXHAUST SYSTEMS
FLOW REGULATORS
FLUID INJECTION
FLUIDS
GASES
330700* - Advanced Propulsion Systems- Emission Control
330101 - Internal Combustion Engines- Spark-Ignition