Prevention of Valve-Seat Erosion

310008

01/01/1931

Event
Pre-1964 SAE Technical Papers
Authors Abstract
Content
MORE THAN SEVEN YEARS of investigation of the problem of preventing valve-seat erosion under severe operating conditions in motor-truck and motorcoach engines are reviewed briefly. Engineers are said now to be generally agreed that an insert of some non-ferrous material is the only means of obtaining a valve seat that will stand severe service.
A theory for the cause of a thin spotty deposit or pick-up on the valve seat that accelerates erosion is advanced, and this deposit is said to be absent on valve seats made of non-ferrous metals. Aluminum bronze gives satisfactory results but is difficult to secure to cast-iron cylinder-blocks because of its greater coefficient of expansion.
Several partially successful methods of securing aluminum-bronze rings to cast iron are shown. A method that is applicable to one alloy which has reduced erosion under the most severe operating condition to such an extent that it is almost negligible is described.
Meta TagsDetails
DOI
https://doi.org/10.4271/310008
Pages
4
Citation
Getzoff, E., "Prevention of Valve-Seat Erosion," SAE Technical Paper 310008, 1931, https://doi.org/10.4271/310008.
Additional Details
Publisher
Published
Jan 1, 1931
Product Code
310008
Content Type
Technical Paper
Language
English