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Automotive Engineering Commons

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Articles 1 - 4 of 4

Full-Text Articles in Automotive Engineering

Anodes For Direct Oxidation Of Hydrocarbons In Solid Oxide Fuel Cells, Seungdoo Park, Hyuk Kim, Steven Mcintosh, Wayne L. Worrell, Raymond J. Gorte, John M. Vohs Jan 2001

Anodes For Direct Oxidation Of Hydrocarbons In Solid Oxide Fuel Cells, Seungdoo Park, Hyuk Kim, Steven Mcintosh, Wayne L. Worrell, Raymond J. Gorte, John M. Vohs

Departmental Papers (CBE)

In this paper we describe the development of Cu/CeO2/YSZ anodes for solid oxide fuel cells (SOFCs) that are active for the direct electrochemical oxidation of dry hydrocarbon fuels. A novel method for synthesizing thin-electrolyte, anode-supported cells is described. This method uses tape-casting of YSZ layers with graphite pore formers, followed by impregnation with aqueous solutions of Cu(NO3)2 and Ce(NO3)2. The performance of model SOFCs with Cu/CeO2/YSZ anodes while operating on a variety of dry hydrocarbon fuels, including methane, butane, decane, and synthetic diesel is reported.


Managing The Process Of Engineering Change Orders: The Case Of The Climate Control System In Automobile Development, Christian Terwiesch, Christoph H. Loch Mar 1999

Managing The Process Of Engineering Change Orders: The Case Of The Climate Control System In Automobile Development, Christian Terwiesch, Christoph H. Loch

Operations, Information and Decisions Papers

Engineering change orders (ECOs) are part of almost every development process, consuming a significant part of engineering capacity and contributing heavily to development and tool costs. Many companies use a support process to administer ECOs, which fundamentally determines ECO costs. This administrative process encompasses the emergence of a change (e.g., a problem or a market-driven feature change), the management approval of the change, up to the change's final implementation. Despite the tremendous time pressure in development projects in general and in the ECO process in particular, this process can consume several weeks, several months, and in extreme cases ...


Ultra-Thin Ceo2 Overlayer On Ysz Studied By X-Ray Surface Scattering, Wotjek Dmowski, S. Putna, Raymond J. Gorte, John M. Vohs, T. Egami Jan 1997

Ultra-Thin Ceo2 Overlayer On Ysz Studied By X-Ray Surface Scattering, Wotjek Dmowski, S. Putna, Raymond J. Gorte, John M. Vohs, T. Egami

Departmental Papers (CBE)

Transition metal catalysts such as Rh/Pt used in a three-way automotive catalytic converter have to perform reduction and oxidation functions at the same time. This can be accomplished only in a specific range of oxygen pressure and temperature. In order to maintain a constant partial pressure of oxygen in the vicinity of catalysts mixtures of ceria and zirconia are used. Ceria is an essential component due to its capability of storing oxygen under oxidizing and releasing oxygen under reducing conditions. However, this function deteriorates with time and eventually a catalytic converter stops working properly. It is not well understood ...


Investigation Of The Effect Of The Temperature Of Intake Air On The Economy And Torque Of A Gasoline Engine, Arthur W. Crisfield Jun 1922

Investigation Of The Effect Of The Temperature Of Intake Air On The Economy And Torque Of A Gasoline Engine, Arthur W. Crisfield

Miscellaneous Papers

The object of this investigation is to make a study of the effect, on the economy and torque of a gasoline motor, of heating the air going to the carburetor.

The knowledge gained from such an investigation is of considerable importance and might be used in determining the temperature at which to supply air to the carburetor of a motor in order to get the best results under its working conditions. General practice indicates that a motor will run more smoothly and first regularly when the temperature of the intake air is 150 degrees or more. The theory is that ...