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Development of a Method for Controlling Fuel Vapor Generation from Automotive Fuel Tanks
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English
Abstract
Evaporative emissions from automotive fuel systems are recognized as one cause of photochemical smog. A key factor in reducing evaporative emissions is to control the amount of fuel vapor generated in the fuel tank. This research focused on the fuel temperature in the tank which has a large effect on fuel vapor generation. Two factors causing the fuel temperature to rise are the heat received from the exhaust system and the heat received from returned fuel. An experimental method was developed for separating and evaluating these two heat quantities. An investigation was then made of the heat balance of the fuel system for several typical fuel tank layouts. It was found that the heat balance differed considerably depending on the fuel tank location. Using a theoretical heat balance model, an analysis was then made of the contributions of different factors to elevated fuel temperatures. The results revealed a direction to follow in designing technical measures for minimizing fuel vapor generation.
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Authors
Citation
Kawachiya, S., Yokoi, S., and Minegishi, T., "Development of a Method for Controlling Fuel Vapor Generation from Automotive Fuel Tanks," SAE Technical Paper 931101, 1993, https://doi.org/10.4271/931101.Also In
References
- “Control of Gasoline Volatility and Evaporative Hydrocarbon Emissions from New Motor Vehicles.” EPA Draft Regulatory Impact Analysis July 1987
- Reddy S. R. “Prediction of Fuel Vapor Generation from a Vehicle Fuel Tank as a Function of Fuel RVP and Temperature.” SAE Paper 892089 1989
- Kunimitsu M. “Prediction of Fuel Vapor Generation from a Vehicle Fuel Tank at a High Temperature.” Journal of JSAE 46 68 72 1992