Device for supplying secondary air for purifying exhaust gases discharged from internal combustion engine
Patent
·
OSTI ID:5644481
The invention discloses a device for supplying secondary air in proportion to the volume of intake air into the exhaust manifold of an internal combustion engine without any adverse effects on an exhaust gas recirculation system. The device comprises a secondary air supply pipe communicated with the exhaust manifold, means for supplying secondary air through the secondary air supply pipe into the exhaust manifold, secondary air control valve means disposed in the secondary air supply pipe for controlling the flow rate of secondary air flowing therethrough, means for detecting the volume of intake air to the engine, means for detecting the volume of the secondary air flowing through the secondary air supply pipe, and means responsive to both the signal representative of the detected volume of the secondary air supply for controlling the secondary air control valve means in such a way that the secondary air supply may be in proportion to the volume of intake air.
- Assignee:
- Nippon Soken, Inc.; Toyota Jidosha Kogyo Kabushiki Kaisha
- Patent Number(s):
- US 4146986
- OSTI ID:
- 5644481
- Country of Publication:
- United States
- Language:
- English
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