In this paper the design and implementation of fault tolerable architecture for scientific workflow engines is presented. The engines are assumed to be implemented as composite web services. Current architectures for workflow engines do not make any considerations for substituting faulty web services with correct ones at run time. The difficulty is to rollback the execution state of the workflo...

A new combustion model is developed and applied to simulate combustion in dual-fuel engines in which the premixed natural gas is ignited by the combustion flame initiated by a diesel spray. The model consists of a diesel auto-ignition model and a flame propagation model. A G-equation model previously developed to simulate SI engine combustion was incorporated with an auto-ignition model to simu...

The presence of metals and metalloids in petrochemical products can infl uence the performance of engines, and contribute to shortening the lifetime of the machinery. In addition, some elements act as catalyst poison, contributing to increases in the amount of toxic gases and particulate matter emitted by vehicles. Silicon compounds such as siloxanes, for example, are added to diesel as anti-fo...

BY AUTOMATIC FDI DESIGN Mattias Nyberg ISY, Link oping University, S-581 83 Link oping, Sweden. Fax: +46-13-282035, e-mail:[email protected] Abstract: Because of environmentally based legislative regulations, diagnosis of automotive engines has become increasingly important. In the design of diagnosis systems, it is important to strive for optimum performance and at the same time, minimize the...