Abstract: Aspects of the present disclosure relate to an apparatus for providing pressurized, thermally conditioned air, comprising a casing, a housing in the casing describing an airflow pathway with an air diffusing outlet proximate to an outlet opening for providing a stream of pressurized air through the outlet opening, a convective module disposed part of the housing and the outlet opening via the airflow pathway. The apparatus can include a first sensor input port adjacent to a portion of the casing and configured to receive a signal indicative of a first physiological indicator and a first sensor output port adjacent to a portion of the casing and configured to transmit the signal indicative of the first physiological indicator. The apparatus can include a controller configured to determine a first physiological indicator value from the first sensor input port and perform at least one operation.

Abstract: A driver circuit is described for an ion measuring device associated with a cylinder of a diesel engine for the measurement of the conductivity of the combustion gas present in the cylinder, wherein a negative voltage can be applied by the driver circuit to a glow plug serving as a sensor and associated with the cylinder for a respective ion measurement. The negative voltage is generated by a capacitor which is correspondingly charged each time the glow plug is switched off via the magnetic energy stored in the internal inductance of the glow plug.

Abstract: Reformate gas is supplied into the exhaust 4 of an internal combustion engine 2 at a location upstream of an oxidation catalyst 6 and an ignition source 14 is provided either upstream or downstream of the oxidation catalyst and upstream of further exhaust gas treatment devices 8 for igniting the mixture in the exhaust to provide rapid heat up of the oxidation catalyst 6 and further exhaust gas treatment devices 8. In a further embodiment reformate gas is injected into the exhaust 24 upstream of a turbocharger 26 to increase turbocharger boost pressure at low engine speeds.

Abstract: A driver circuit is described for an ion measuring device associated with a cylinder of a diesel engine for the measurement of the conductivity of the combustion gas present in the cylinder, wherein a negative voltage can be applied by said driver circuit to a glow plug serving as a sensor and associated with the cylinder for a respective ion measurement. The negative voltage is generated by means of a capacitor which is correspondingly charged each time the glow plug is switched off via the magnetic energy stored in the internal inductance of the glow plug.