Exhaust gas purifying device for internal combustion engine with auxiliary combustion chamber
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
- Resource Relation:
- Patent Priority Date: Priority date 20 Jan 1977, Japan
- Country of Publication:
- United States
- Language:
- English
Similar Records
Exhaust gas recirculation device for internal combustion engine with auxiliary combustion chamber
Internal combustion engine injected accumulation chamber