Title: Exhaust silencer for a railway locomotive

Abstract: An exhaust silencer for a railway locomotive with a supercharged, six-cylinder diesel engine developing a power of about 200-250 HP has a cylindrical body closed at each end by an end wall and subdivided into three resonance chambers and three gas expansion chambers by five dished baffle-plates, the fourth and fifth baffle-plates each having four tube sections. To optimize the acoustic performance specific dimensions of the chambers, of the tube sections, of a perforated induction pipe and of an outlet pipe are prescribed.

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Inventors: Franco, Luigi (Turin, IT)
Bertotti, Giorgio (Vinovo, IT)

Application Number: 034038
Filing Date: 1979-04-27
Publication_date: 1980-05-20
Assignee: Centro Richerche Fiat S.p.A. (Orbassano, IT)
Primary Class(es): 181/272 181/273, 181/275
Other Classes:
US Patent Ref:

1539595	May, 1925	Powell	181/281.
1735789	Nov, 1929	Powell	181/273.
3712030	Jan, 1973	Priest	181/258.
4064962	Dec, 1977	Hunt	181/272.
4164266	Aug, 1979	Collin et al.	181/273.

Other Refs:
Primary Examiner: Hix, L. T.
Assistant Examiner: Fuller, Benjamin R.
Attorney: Sughrue, Rothwell, Mion, Zinn and Macpeak