| 摘要 |
PCT No. PCT/SE96/01711 Sec. 371 Date Jun. 18, 1998 Sec. 102(e) Date Jun. 18, 1998 PCT Filed Dec. 19, 1996 PCT Pub. No. WO97/22788 PCT Pub. Date Jun. 26, 1997A throttle valve having a housing with an inlet and an outlet intended to be connected to an exhaust conduit of an internal combustion engine. The housing has a cylinder which is perpendicularly directed towards an exhaust passage between the inlet and outlet. The cylinder communicates with the exhaust passage and has a piston with valve discs at each end. In the open position of the valve, a distal valve disc abuts against a distal seat in the cylinder, and in a throttled position, a proximal valve disc abuts against a proximal seat.
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