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A Test Procedure for Identifying the Gasoline's Deposit Formation Tendency on Intake Valves
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Abstract
Deposit formation on the intake valve of spark-ignition engines is a well known and old problem. The intake valve deposits work like a sponge and absorb the injected fuel during the acceleration, which leads to a leaner air/fuel ratio. Non-uniform running may occur during engine warm-up and acceleration periods. The poorer running behavior of the engine increases the emissions and shortens the life of catalytic-converter. An increase of fuel consumption would be followed.
A laboratory test procedure was developed and used to evaluate the liquid fuels tendencies to build deposits on the intake valves. This test method has shown a great accuracy and is very reliable. It can help accelerate development of additives. It can also be used as a pretest method for gasoline quality control. Chemical analysis and comparison between the results achieved by this method and the deposits from the intake valves show a great similarity of the substances found in the deposits.
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Citation
Daneshagari, P., "A Test Procedure for Identifying the Gasoline's Deposit Formation Tendency on Intake Valves," SAE Technical Paper 892120, 1989, https://doi.org/10.4271/892120.Also In
References
- Daneshgari P. et al The Influence of Temperature Upon Gasoline Deposit Build-up on the Intake Valves SAE 890215 , International Congress and Exposition Detroit, Michigan Feb. 27 March 3 1989
- Baumeister K. J. Hamil T. D. Schoessow G. J. A general correlation of vaporization times of drops in film boiling on a flat plate Proceedings of the third international Heat Transfer Conference 4 66 73 Aug. 1966
- Nukiyama S. The Maximum and Minimum Values of the Heat Q Transmitted From Metal to Boiling Water under Atmospheric Pressure Int. J. Heat and Mass Transfer 9 1419 1433 1966
- Hersstad O. Verdunstung und Klopffrage. Oel und Kohle verein-igt mit Erdoel und teer, 1936, 1937, 1938 und 1939
- Daneshgari P. Einfluss des Kraftstoffes auf Einlassventil-verkokung des Otto-Motors Dissertation Universitaet Karlsruhe 1988
- Bitting B. Kohlhepp W. Intake Valve Deposits Fuel Detergency Requirements Revisited SAE 872117 , International Fuel and Lubricant Meeting and Exposition Toronto, Ontario November 2-5 1987
- Daneshgari P. Schaefer H. V. Einfluss des Kraftstoffes auf Einlassventilverkokun. MTZ 49 ( 1988
- Mizomoto M. Ikai S. Evaporation and Ignition of a Fuel Droplet on a Hot Surface (part 1 and 2) Bulletin of the JSME 21 162 1765 1779 December 1978
- A patent for process i.g. independent of its construction is pending License serial # 07/302,446