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Controlling Induction System Deposits in Flexible Fuel Vehicles Operating on E85
Technical Paper
2007-01-4071
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
With the wider use of biofuels in the marketplace, a program was conducted to study the deposit forming tendencies and performance of E85 (85% denatured ethanol and 15% gasoline) in a modern Flexible Fuel Vehicle (FFV). The test vehicle for this program was a 2006 General Motors Chevrolet Impala FFV equipped with a 3.5 liter V-6 powertrain.
A series of 5,000 mile Chassis Dynamometer (CD) Intake Valve Deposits (IVD) and performance tests were conducted while operating the FFV on conventional (E0) regular unleaded gasoline and E85 to determine the deposit forming tendencies of both fuels. E85 test fuels were found to generate significantly higher levels of IVD than would have been predicted from the base gasoline component alone. The effects on the weight and composition of IVD due to a corrosion inhibitor and sulfates that were indigenous to one of the ethanols were also studied.
Testing showed that the IVD generated from E85 could be controlled or eliminated by using Deposit Control Additives (DCA). The results of this study provide a method for controlling IVD generated in FFVs operating on E85. Although sulfate deposits were detected on fuel injector valves with ethanol containing 4 ppm sulfates, they did not cause fuel injector performance issues in the 5,000 mile tests.
FFV vehicle performance testing showed fuel economy losses consistent with E85's lower energy content compared to conventional gasoline, but the E85 fuel provided an increase in power.
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Citation
DuMont, R., Cunningham, L., Oliver, M., Studzinski, M. et al., "Controlling Induction System Deposits in Flexible Fuel Vehicles Operating on E85," SAE Technical Paper 2007-01-4071, 2007, https://doi.org/10.4271/2007-01-4071.Also In
References
- Energy Policy Act of 2005. Public Law 109-58 August 8, 2005, Title XV-Ethanol and Motor Fuels, Subtitle A-General Provisions, Section 1501 Renewable Content of Gasoline www.doi.gov/iepa/EnergyPolicyActof2005.pdf
- National Ethanol Vehicle Coalition http://www.e85fuel.com
- ASTM International Standards Worldwide http://astm.org/cgi-bin/SoftCart.exe/index.shtml?L+mystore+nhiv5164+1178044009
- Environmental Protection Agency, 40CFR Part 80, Regulation of Fuel Additives: Certification Standards for Deposit Control Gasoline Additives 61 130 35309 35381 http://www.epa.gov/fedrgstr/EPA-AIR/1996/July/Day-05/pr-23484.txt.html
- [Federal Register: December 28, 1994]c40 CFR Part 60 40 CFR Part 80 [AMS-FRL-5128-9] http://www.epa.gov/EPA-AIR/1994/December/Day-28/pr-243.html
- Renewable Fuels Association (RFA) Fuel Ethanol Industry Guidelines, Specifications, and Procedures October 2005 http://www.ethanolrfa.org/objects/pdf/newRFA%20Fuel%20Ethanol%20960501.pdf
- Specific bioethanol issues for the automotive industry Bennett John Ford Motor Company, International Conference on Biofuels Standards 27-28 February 2007 Brussels http://ec.europa.eu/energy/res/events/doc/biofuels/presentation_bennet.pdf
- June 20 2005 EPA Closing Fuel Injector Case, Milwaukee Journal Sentinel May 5 2005
- TOP TIER Detergent Gasoline http://www.toptiergas.com/deposit_control.html
- Page 34 of the Renewable Fuels Association (RFA) Fuel Ethanol Industry Guidelines, Specifications, and Procedures October 2005
- ConocoPhillips' field experience Oliver Mitch
- Alternative Fuel Fact Sheet April 2003 U.S. DOE Office of Energy Efficiency and Renewable Energy http://www.eere.energy.gov/afdc/pdfs/33058.pdf