Accession Number:

AD0602731

Title:

RECENT EXPERIMENTAL STUDIES OF MECHANICAL NOISE IN DIESEL ENGINES.

Descriptive Note:

Phase 2,

Corporate Author:

BOLT BERANEK AND NEWMAN INC CAMBRIDGE MASS

Personal Author(s):

Report Date:

1964-07-10

Pagination or Media Count:

108.0

Abstract:

The results of some recent British and Russian studies are found to indicate that rate of pressure rise, as well as piston-cylinder clearance and piston geometry, are of importance in relation to the mechanical noise and vibration of single-cylinder diesel engines. A dependence of noise on piston clearance and on offset of the piston pin is observedis observed even in engines in which combustion noise appears to be dominant. Also, the porting of oil through the piston wall is found to cause significant reductions in some parts of the noise spectrum.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE