Modifications on the Intake Ports with the Aim to Reduce the Noise of a Two-Stroke-Crankcase-Scavenged Engine Institute for Piston Machines, Univ. of Hannover, Federal Republic of Germany

Format:

Conference/Event

Author/Creator:

Groth, Klaus, author.

Conference Name:

1982 SAE International Off-Highway and Powerplant Congress and Exposition (1982-09-13 : Milwaukee, Wisconsin, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1982

Summary:

One of the dominant noise sources of small two-stroke-cycle and crankcase-scavenged engines (port covered and uncovered by the working piston) represents the intake noise. The opening and closing of the port of these engines which are used to drive chain saws causes intake oscillations of big amplitudes. These are an important part of the total noise with regard to the point of measurement at the ear of the saw operator.By using a special intake port shape and the advancing of the port opening the gradient of the cross section course is reduced. The reduction of the total noise level is about 24 dB (A) as a function of the speed at full load while the delivery rate and the output remain constant

Notes:

Vendor supplied data

Publisher Number:

821069

Access Restriction:

Restricted for use by site license