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Title:
SECONDARY AIR SUPPLY DEVICE WITH INTAKE AIR CONTROL FUNCTION
Document Type and Number:
Japanese Patent JP2007009767
Kind Code:
A
Abstract:

To provide a secondary air supply device of a simple structure provided with an intake air control function more effectively preventing after burn in an exhaust pipe at a time of sudden deceleration of an engine.

A control valve controlling supply of secondary air to an exhaust port is connected to a diaphragm 12 operating with interlocking with vacuum in an intake pipe via a shaft 11. The shaft 11 is air-tightly inserted in a shaft bearing 18. A groove 11A is provided on the shaft arranged in the shaft bearing 18. Plot air passages 24, 25 supplying air to a pilot air jet of a carburetor are connected to the shaft bearing 18. The groove 11A communicates to the pilot air passages 24, 25 at a time of control valve open and the shaft 11 shuts off the pilot air passages 24, 25 in the shaft bearing 18.


Inventors:
Arai, Eiriyoku
Watanabe, Hitoshi
Application Number:
JP2005000189696
Publication Date:
January 18, 2007
Filing Date:
June 29, 2005
Export Citation:
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Assignee:
MIKUNI CORP
International Classes:
F01N3/22; F02M7/24; F02M17/38
Attorney, Agent or Firm:
松浦 孝