Thermal reactor having collector therein to mix pulsed flows of exhaust and secondary air

Patent · Tue Oct 30 04:00:00 EST 1979

OSTI ID:5490428

Mizuno, Y; Hiramoto, M

An exhaust gas purification system for internal combustion engines is comprised of two exhaust gas passages which are substantially equal in length and each of which has a substantially constant cross-section. A thermal reactor communicates with the exhaust gas passages, and a collector is provided on the open ends of the exhaust gas passages. Since the ignition timing of every cylinder is different from each other, the mass of exhaust gases and the mass of secondary air are ejected from the exhaust passages in different phases. The collector is formed to collect and mix the mass of exhaust gases and the mass of secondary air which are ejected from both of the exhaust gas passages at a different time, and has an outlet for discharging the exhaust gases and the secondary air into the chamber of the thermal reactor with mixing thereof. In order to introduce sufficient amounts of secondary air after the mass of exhaust gas has discharged, each exhaust gas passage is formed with a volume equal to a displacement volume of the cylinder of the engine and less than four times the displacement volume thereof, and has a cross-sectional area less than three times the opening area of the exhaust valve.

• Assignee: Fuji Jukogyo Kabushiki Kaisha
• Patent Number(s): US 4172362
• OSTI ID: 5490428
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
AIR POLLUTION CONTROL
DESIGN
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST SYSTEMS
GASEOUS WASTES
INTERNAL COMBUSTION ENGINES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
WASTES