This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Intake Valve Deposits - Effects of Engines, Fuels & Additives
Annotation ability available
Sector:
Language:
English
Abstract
A measurable incidence of driver complaints about vehicle driveability has occurred in certain imported passenger cars. Critical engines are higher specific output, lean burn designs that are sensitive to deposits formed on intake valves. U.S. engines are trending toward similar” designs but have not yet been tuned as close to the lean limit of combustion. It is reasoned that the continuing trend toward more precise management of air fuel ratio results in engines much less tolerant of deposits throughout the fuel metering and induction system. Consequently, more effective additive systems to control induction system deposits have been developed. Discussed in this paper are the interrelationships of fuel composition and engine configurations. Results of these continuing studies are helping to define the more important fuel and additive parameters for deposit control in various engines.
Recommended Content
Citation
Tupa, R. and Koehler, D., "Intake Valve Deposits - Effects of Engines, Fuels & Additives," SAE Technical Paper 881645, 1988, https://doi.org/10.4271/881645.Also In
References
- Bill Bitting, F. Gschwendtner Kohlhepp W. Kothe M. Testroet C. J. Ziwica K. H. “Intake Valve Deposits - Fuel Detergency Requirments Revisited” SAE Paper No. 872117 1987
- Private Communication
- Taniguchi B. Y. Peyla R. J. Parsons G. M. Hoekman S. K. Voss D. A. “Injector Deposits - The Tip of Intake System Deposit Problems” SAE Paper No. 861534
- Gething J. A. “Performance - Robbing Aspects of Intake Valve and Port Deposits” SAE Paper No. 872116 1987
- Bert J. A. Gething J. A. Hansel T. J. Newhall H. K. Peyla R. J. Voss D. A. “A Gasoline Additive Removes Combustion Chamber Deposits and Reduces Vehicle Octane Requirement” SAE Paper No. 831709 1983
- Lewis R. A. Newhall H. K. Peyla R. J. Voss D. A. Welstand J. S. “A New Concept in Engine Deposit Control Additives for Unleaded Gasolines” Society of Automotive Engineers of Japan 1983
- Graiff L, B. “Some New Aspects of Deposit Effects on Engine Octane Requirement Increase and Fuel Economy” SAE Paper No. 790938 1979
- Tupa R. C. Koehler D. E. “Gasoline Port Fuel Injectors - Keep Clean/Clean Up with Additives” SAE Paper No. 861536 1986
- Tupa R. C. “Port Fuel Injector Deposits - Causes/Consequences/Cures” SAE Paper No. 872113 1987
- Tupa R. C. Dorer C. J. “Gasoline and Diesel Fuel Additives for Performance/Distribution/Quality-II” SAE Paper No. 861179 1986
- Nishizaki T. Maeda Y. Date K. “The Effects of Fuel Composition and Fuel Additives on Intake System Detergency of Japanese Automobile Engine” SAE Paper No. 790203 1979
- Jewitt C. H. Bostick G. L. Kersey V. L. “Fuel Injector Intake Valve and Carburetor Detergency Performance of Gasoline Additives” SAE Paper No. 872114 1987
- Lepperhoff G. Schommers J. Weber O. Leonhardt H. “Mechanism of the Deposit Formation at the Inlet Valves” SAE Paper No. 872115 1987
- Gibbs L. M. Perieva N. F. “Does Leaded Gasoline Need a Deposit Control Additive?” NPRA Meeting Sept. 13-14 1973
- Dable J. W. Sheahan T. J. “The Contribution of Additives to The Elimination of Air Pollution” Institute of Mechanical Engineers Solihull, U.K. Nov. 1971