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Title: Control system for exhaust gas recirculating valve

Abstract

An exhaust gas recirculation control system for an internal combustion engine is disclosed in which a pressure operated exhaust gas recirculation (EGR) valve governs the flow of engine exhaust gas into the engine intake. The EGR valve is supplied with operating pressure from the engine intake manifold via a pressure amplifier. The amplifier has a pressure input which tends to vary in relation to the flow rate of gas through the engine so that the EGR valve operating pressure varies as an amplified function of the amplifier input pressure signal. A control valve modifies the amplifier input signal as a function of intake manifold pressure to enable the EGR valve operation to be programmed as desired throughout the range of operation of the engine.

Inventors:
Publication Date:
OSTI Identifier:
7353509
Patent Number(s):
US 3970061
Assignee:
Ranco Inc.
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 7 Mar 1975
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; EXHAUST RECIRCULATION SYSTEMS; CONTROL SYSTEMS; INTERNAL COMBUSTION ENGINES; AMPLIFIERS; DESIGN; PRESSURE DEPENDENCE; VALVES; CONTROL EQUIPMENT; ELECTRONIC EQUIPMENT; ENGINES; EQUIPMENT; EXHAUST SYSTEMS; FLOW REGULATORS; POLLUTION CONTROL EQUIPMENT; 330700* - Advanced Propulsion Systems- Emission Control

Citation Formats

Caldwell, R B. Control system for exhaust gas recirculating valve. United States: N. p., 1976. Web.
Caldwell, R B. Control system for exhaust gas recirculating valve. United States.
Caldwell, R B. Tue . "Control system for exhaust gas recirculating valve". United States.
@article{osti_7353509,
title = {Control system for exhaust gas recirculating valve},
author = {Caldwell, R B},
abstractNote = {An exhaust gas recirculation control system for an internal combustion engine is disclosed in which a pressure operated exhaust gas recirculation (EGR) valve governs the flow of engine exhaust gas into the engine intake. The EGR valve is supplied with operating pressure from the engine intake manifold via a pressure amplifier. The amplifier has a pressure input which tends to vary in relation to the flow rate of gas through the engine so that the EGR valve operating pressure varies as an amplified function of the amplifier input pressure signal. A control valve modifies the amplifier input signal as a function of intake manifold pressure to enable the EGR valve operation to be programmed as desired throughout the range of operation of the engine.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {7}
}