Coordinating Research Council Development of a CRC Intake Valve Deposit Test

940348

03/01/1994

Event
International Congress & Exposition
Authors Abstract
Content
The Coordinating Research Council (CRC) Intake Valve Deposit Group is evaluating a dynamometer based test to rank fuels for their relative tendency to form intake valve deposits. The Ford 2.3L OHC, dual spark plug equipped engine was previously selected (1*) for use in the current test program to determine optimum test conditions.
A fifteen test design of experiments was constructed to reproduce intake valve deposit weight and morphology, representative of that causing field driveability problems. Test results were analyzed and a two-mode composite test was deduced from deposit weights, visual ratings, observations on the test valves and thermogravimetric analysis (TGA) results.
Once the test was optimized, an additional ten test matrix was conducted to assess both repeatability and the performance of the test over a range of deposit levels. Base fuel and base fuel + two additive combinations were tested to provide a range of deposit tendencies.
Meta TagsDetails
DOI
https://doi.org/10.4271/940348
Pages
44
Citation
Bannon, S., Avery, N., Bitting, W., Carlson, C. et al., "Coordinating Research Council Development of a CRC Intake Valve Deposit Test," SAE Technical Paper 940348, 1994, https://doi.org/10.4271/940348.
Additional Details
Publisher
Published
Mar 1, 1994
Product Code
940348
Content Type
Technical Paper
Language
English