Abstract: A device for the diagnosis of the operability of a particle filter for an exhaust gas stream of an internal combustion engine, the device comprising: an exhaust conduit having an outer wall, the outer wall of the exhaust conduit defining a virtual bounding tubular envelope, the virtual bounding tubular envelope being the smallest possible tubular envelope having a circular cross-section co-planar to the cross-section of the exhaust conduit and completely surrounding the outer wall of the exhaust conduit at any position along the exhaust conduit, an exhaust chamber having a detection filter, a temperature sensor arranged in the exhaust chamber, the temperature sensor being arranged for measuring the temperature of a portion of the exhaust gas stream having passed through at least a part of the detection filter, wherein at least a portion of the exhaust chamber is thermally connected to the environment exterior to the exhaust conduit, and wherein the exhaust chamber is at least partly arranged within the v

Abstract: A method and system for transferring one or more sequentially ordered data files to a plurality of secondary systems that respond after receipt of each file. A clear-to-send (CTS) flag is maintained for each of the secondary systems. A sequence broker reads a clear-to-send flag and, if the CTS flag is asserted, issues a transfer command to a transmit module to transmit a next data file to the secondary system. The sequence broker reads a status file associated with a secondary system and determines which data file, if any, is to be transferred. The sequence broker receives invoking commands from a clear-to-send broker and/or an invoking module for invoking the transfer process.