Exhaust gas recirculation system for internal combustion engines

Patent · Tue Jun 28 00:00:00 EDT 1983

OSTI ID:5508999

Fujimoto, M

An engine exhaust gas recirculation system includes a recirculation gas control valve provided in a gas recirculation passage. The gas recirculation passage is further provided with a restriction and pressure sensors for detecting the pressure drop across the restriction so that the opening of the control valve be adjusted in accordance with the engine operating conditions and with a prestored memories of optimum values of the pressure drop. The restriction is variable so that the effective opening thereof is increased as the recirculated gas flow increases.

• Assignee: Toyo Kogyo Co. Ltd (Japan)
• Patent Number(s): US 4390001
• OSTI ID: 5508999
• Resource Relation: Patent Priority Date: Priority date 20 Oct 1980, Japan; Other Information: PAT-APPL-312747
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
EXHAUST RECIRCULATION SYSTEMS
DESIGN
INTERNAL COMBUSTION ENGINES
CONTROL EQUIPMENT
CONTROL SYSTEMS
EXHAUST GASES
ENGINES
EQUIPMENT
EXHAUST SYSTEMS
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
POLLUTION CONTROL EQUIPMENT
WASTES
330100* - Internal Combustion Engines
330700 - Advanced Propulsion Systems- Emission Control