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原文传递 Fuel Permeation from Automotive Systems. Final rept.

题名：	Fuel Permeation from Automotive Systems. Final rept.
作者：	Haskew-H.M.; Liberty-T.F.; McClement-D.
关键词：	Fuel-systems; Permeation-; *Ethanol-.;California-; Emission-tests; Oxygenants-; Fuel-additives; Data-collection; Quality-control.
摘要：	The California Air Resources Board (CARB), in cooperation with the Coordinating Research Council (CRC), sponsored a major study on the permeation effects of ethanol on automotive fuel systems. Permeation is a diffusion process whereby fuel molecules migrate through the elastomeric materials (rubber and plastic parts) that make up the vehicle's fuel and fuel vapor systems. Permeation is a component of the evaporative emissions from the vehicle fleet. This test program was designed to determine the magnitude of the permeation differences between three fuels, containing either MTBE, ethanol, or no oxygenate, in the selected test fleet. The testing was conducted on a sample of ten California vehicles chosen to represent the light-duty in-use fleet as it existed in calendar year 2001. The oldest was a 1978 Oldsmobile Cutlass, and the newest was a 2001 Toyota Tacoma pick-up truck. Vehicles were identified and purchased in late 2002. The emission tests were conducted during a period that ran between January 2003 and June 2004. This report presents the results of the experimental test program.
报告类型：	科技报告