Exhaust gas recirculation apparatus for an internal combustion engine

Patent · Tue Sep 16 04:00:00 EDT 1980

OSTI ID:6702521

Abe, T; Hasegawa, Y; Kawai, N; Ota, I; Yamamoto, H; Yamasaki, T

Disclosed herein is an internal combustion engine provided with an exhaust gas recirculation system of so-called back pressure control type. The exhaust gas recirculation system is provided with a vacuum line connecting a so-called EGR port with a vacuum operated flow control valve, and a modulator valve having a control chamber selectively opened to the vacuum line in response to the pressure of recirculated exhaust gas for controlling vacuum signal level of the flow control valve. The control chamber of the modulator is connected to another vacuum signal port located slightly above the EGR port.

• Assignee: Nippondenso Co Ltd Jp; Toyota Jidosha Kogyo K K (Japan)
• Patent Number(s): US 4222355
• OSTI ID: 6702521
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330700* -- Advanced Propulsion Systems-- Emission Control
CONTROL
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FLOW REGULATORS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
POLLUTION CONTROL EQUIPMENT
PRESSURE CONTROL
VALVES