Internal combustion engine with an exhaust gas recirculation system

Patent · Mon Dec 24 23:00:00 EST 1979

OSTI ID:5222582

Saiki, J; Kumai, T

Disclosed is an internal combustion engine with an exhaust gas recirculation system. The engine is provided with an exhaust gas recirculation control valve device, a modulator valve device and a vacuum control valve device. The exhaust gas recirculation control valve device communicates an exhaust passage of the engine with an intake passage of the engine and is provided with a diaphragm chamber, partitioned by a diaphragm and communicating with a first port of a carburetor and a constant pressure chamber, partitioned by a valve body which is actuated by the diaphragm. The modulator valve device is provided with an upper diaphragm chamber, which is communicated with a second port disposed at a position nearer to a venturi portion of the carburetor than the first port and communicated with the vacuum control valve device. An orifice is disposed between a first communicating pipe, which communicates the first port with the diaphragm chamber of the exhaust gas recirculation control valve device, and another communicating pipe, which is communicated with a port disposed upstream of the first port.

• Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
• Patent Number(s): US 4180035
• OSTI ID: 5222582
• 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 CONTROL
CHALCOGENIDES
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
INTERNAL COMBUSTION ENGINES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
VACUUM SYSTEMS