Repeatability of Intake Valve Deposit Measurements in the CRC 2.3L Ford Intake Valve Deposit Dynamometer Test

962011

10/01/1996

Event
1996 SAE International Fall Fuels and Lubricants Meeting and Exhibition
Authors Abstract
Content
Recently, the Coordinating Research Council (CRC) developed an engine dynamometer test based on a 1994, 2 3 liter, Ford engine to determine the intake valve deposit (IVD) forming tendency of fuels. During the development of this test, an Inter-Laboratory Study (ILS) was conducted using Draft 3 I of the “Standard Dynamometer Test Method for Measuring the Detergency of Spark Ignition Engine Fuels”. This paper describes a data set which was generated by running tests with a variety of fuels, including many repeat tests, using this procedure to obtain intake valve deposit data. This data, combined with the ILS data and data from Phase II-B of the CRC test development, points out the variation in test to test repeatability as a function of the average intake valve deposit weight of a given fuel. Analysis shows that base fuels, not containing detergent additives, have a repeatability which varies differently than fuels which do contain detergent additives and that this repeatability is typically better than fuels which contain detergent additives. Additionally, the data indicates that within a test, the intake valve in cylinder 3 typically produced heavier IVD, while the intake valves in cylinders 1 and 4 typically produced less IVD. Information is also presented and discussed regarding the variation between intake valves within a test and comparing IVD weight to standardized CRC intake valve ratings.
Meta TagsDetails
DOI
https://doi.org/10.4271/962011
Pages
17
Citation
Corkwell, K., and Firmstone, G., "Repeatability of Intake Valve Deposit Measurements in the CRC 2.3L Ford Intake Valve Deposit Dynamometer Test," SAE Technical Paper 962011, 1996, https://doi.org/10.4271/962011.
Additional Details
Publisher
Published
Oct 1, 1996
Product Code
962011
Content Type
Technical Paper
Language
English