PHYSICAL CHARACTERISTICS of ROUGHNESS in INTERNAL-COMBUSTION ENGINES Research Laboratories Division, General Motors Corporation

Format:

Conference/Event

Author/Creator:

WITHROW, LLOYD, author.

Conference Name:

meeting of the Detroit Section of the SAE

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1944

Summary:

EXPERIMENTS have been run to find relationships between the primary causes and the outward effects of roughness as produced by a single-cylinder engine and by an 8-in-line engine.This was done by recording simultaneously on a multi-element oscillograph, oscillograms of the following phenomena:A study of the oscillograms reveals that the sensation of roughness in both of these engines is closely related to a shock type of excitation that is developed in the crankshaft-flywheel system.In the single-cylinder engine this phenomenon was affected by any change in engine conditions which altered the development of the combustion pressures. Moreover, the sensation of roughness was greatly diminished by using a so-called "flexi-disc flywheel."In the multicylinder engine, the shock type of excitation of the crankshaft-flywheel system as well as the sensation of roughness could be affected in two different ways:

Notes:

Vendor supplied data

Publisher Number:

440155

Access Restriction:

Restricted for use by site license