Exhaust gas purification system
Patent
·
OSTI ID:6143115
The invention discloses an exhaust gas purification system for use in an internal combustion engine equipped with a dual exhaust system. The exhaust gas purification system includes a secondary air supplying port of a secondary air supplying passage opened into selected one of a first or second group of exhaust pipes, while an exhaust gas deriving port of an exhaust gas recycling passage for deriving port of an exhaust gas to an upstream of the carburetor throttle valve is provided in the exhaust line at a donwstream from the above secondary air supplying port for effective suppression of NO/sub x/ through accurate control of the amount of exhaust gases to be recycled.
- Assignee:
- Toyo Kogyo Co., Ltd.
- Patent Number(s):
- US 4142492
- OSTI ID:
- 6143115
- Country of Publication:
- United States
- Language:
- English
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