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

Patent · Tue Nov 27 00:00:00 EST 1979

OSTI ID:5419538

Kawamura, H; Ohta, H; Kubota, K

A 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 cam operated valves are actuated by hydraulic tappets which are controlled by a solenoid control valve. The solenoid control valve is energized under conditions of high load operation of the engine and, as a result, a hydraulic path is established which allows oil supplied to the tappets to return to the sump. Under this condition, the cam operated valves do not open.

• Assignee: Isuzu Motors Ltd.
• Patent Number(s): US 4175522
• OSTI ID: 5419538
• Resource Relation: Patent Priority Date: Priority date 24 Jan 1977, Japan
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
DIESEL ENGINES
EXHAUST RECIRCULATION SYSTEMS
DESIGN
COMBUSTION CHAMBERS
VALVES
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
EXHAUST SYSTEMS
FLOW REGULATORS
INTERNAL COMBUSTION ENGINES
POLLUTION CONTROL EQUIPMENT
330102* - Internal Combustion Engines- Diesel
330700 - Advanced Propulsion Systems- Emission Control