SEDL / STP / STP202-EB / STP44140S

Test Method for Studying the Effect of Fuel Composition Upon Intake Valve Deposit Forming Characteristics

Cabal, A. V.
Senior Technologist and Technologist, Socony Mobil Oil Co., Inc., Research and Development Laboratory, Paulsboro, N. J.

Capowski, J.
Senior Technologist and Technologist, Socony Mobil Oil Co., Inc., Research and Development Laboratory, Paulsboro, N. J.

Pages: 9    Published: Jan 1957

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Abstract

This paper describes a test which was developed to measure induction system deposit-forming characteristics of gasolines. The procedure is a modification of the induction-system deposit test reported at the ASTM Symposium on Motor Gasoline Stability held in Philadelphia, Feb. 15, 1954. A baffled tube provides an extension to the test manifold where temperatures are of the order of those obtained on passenger car intake-valve stems.

Data are presented which compare the weights of baffled tube deposits with Chevrolet FL-2 engine and road tests intake valve deposits for three fuels. The effect of gasoline stability, antioxidant type, and concentration are discussed.