Exhaust gas purifying device for internal combustion engine with auxiliary combustion chamber

Patent · Tue May 29 04:00:00 EDT 1979

OSTI ID:6104548

Kawamura, H; Ohta, H; Kubota, K

The recirculating and recombustion type of exhaust gas purification system for a compression ignition engine includes an expansion manifold communicating with auxiliary combustion chambers of each cylinder through separate passages. Cam operated valves are located in each of the separate passages. The exhaust gas in an auxiliary combustion chamber is expanded into the manifold through one of the cam operated valves and is then drawn into the auxiliary combustion chamber of another cylinder whose piston is near the bottom of its intake or suction stroke via another open cam operated valve. The recirculated or transferred exhaust gas is cooled by its expansion into the manifold, water jacketing within the cylinder head and air surrounding the exposed periphery. Further, in high load operation of the engine, a single butterfly valve disposed midway of the expansion manifold can control the amount of the exhaust gas circulation to improve the engine operation.

• Assignee: Isuzu Motors Ltd.
• Patent Number(s): US 4156414
• OSTI ID: 6104548
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330700* -- Advanced Propulsion Systems-- Emission Control
AFTERBURNERS
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
GASEOUS WASTES
INTERNAL COMBUSTION ENGINES
POLLUTION CONTROL EQUIPMENT
WASTES