Forced air control valve for exhaust system of internal combustion engine

Patent · Mon Dec 17 23:00:00 EST 1979

OSTI ID:5419781

Klimazewski, L T; McNairy, J A

A forced air control valve for an air injection system in an internal combustion engine is shifted during cold engine operation to divert air flow to the exhaust manifold upstream of a catalytic converter bed to supply air to the exhaust gases for further combustion prior to entry in the catalytic converter. A diaphragm operated main valve is responsive to a vacuum from the intake manifold for diverting air to the exhaust manifold and a temperature activated vacuum switch shuts off the vacuum when the engine warms up. Upon deceleration during cold engine operation the control valve is shifted to divert air away from the exhaust manifold.

• Assignee: ACF Industries, Inc.
• Patent Number(s): US 4178755
• OSTI ID: 5419781
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
330700 -- Advanced Propulsion Systems-- Emission Control
AIR POLLUTION ABATEMENT
CATALYTIC CONVERTERS
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FLOW REGULATORS
INTERNAL COMBUSTION ENGINES
POLLUTION ABATEMENT
POLLUTION CONTROL EQUIPMENT
VALVES