HISTORY OF AUTOMOTIVE-CLUTCH DEVELOPMENT

Format:

Other

Author/Creator:

WEMP, E E., author.

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1925

Summary:

Reviewing briefly the history of the automotive clutch and summarizing the most interesting achievements in clutch design during recent years, the author discusses friction facings and says that the development of the asbestos-base friction-bearing has made possible the multiple-disc dry-plate and the single-plate types. For severe service, the qualifications of a satisfactory friction-facing are density of structure, together with a reasonably high tensile-strength; the coefficient of friction should be high and fairly constant over a wide range of temperature; the facing must be able to withstand high temperature without deterioration; the impregnating compound must not bleed out at high temperature; and the permeation of the impregnating solution must be complete so that the wear resistance is constant throughout the thickness of the facing. The molded and the woven types of facing are treated at length.Engagement methods, cooling and thermal efficiency, adjustment, methods of control, the lubricating of release sleeves and balancing are described. Since the clutch virtually converts engine torque into heat during the period of slippage just previous to full engagement, and since the heat must be dissipated through the clutch mechanism, the thermal efficiency of a clutch is of great importance. The severe service required of motorbuses has emphasized the importance of having a clutch rid itself of the large quantity of heat generated as a result of its frequent use and, from his experience, the author concludes that:

Notes:

Vendor supplied data

Publisher Number:

250041

Access Restriction:

Restricted for use by site license