Abstract: A catalysed filter for a positive ignition internal combustion engine comprises a porous filtering substrate having a total substrate length coated with a three-way catalyst washcoat composition comprising at least one precious metal selected from the group consisting of rhodium and one or both of platinum and palladium supported on a high surface area oxide, and an oxygen storage component, which composition being axially shared by a first zone comprising inlet surfaces of a first substrate length<total substrate length and a second zone comprising outlet surfaces of a second substrate length<total substrate length, wherein a sum of the substrate length in the first zone and the substrate length in the second zone?100% and wherein one or both of the following applies: a washcoat loading in the first zone>second zone; and a total precious metal loading in the first zone>second zone.

Abstract: A catalysed filter for a positive ignition internal combustion engine comprises a porous filtering substrate having a total substrate length coated with a three-way catalyst washcoat composition comprising at least one precious metal selected from the group consisting of rhodium and one or both of platinum and palladium supported on a high surface area oxide, and an oxygen storage component, which composition being axially shared by a first zone comprising inlet surfaces of a first substrate length<total substrate length and a second zone comprising outlet surfaces of a second substrate length<total substrate length, wherein a sum of the substrate length in the first zone and the substrate length in the second zone?100% and wherein one or both of the following applies: a washcoat loading in the first zone>second zone; and a total precious metal loading in the first zone>second zone.

Abstract: A catalyzed filter for filtering particulate matter from exhaust gas emitted from a positive ignition internal combustion engine comprises a ceramic porous wall-flow filter substrate having a total substrate length and having inlet channels defined in part by ceramic inlet wall surfaces and outlet channels defined in part by ceramic outlet wall surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a first porous structure containing pores of a first mean pore size, wherein the porous substrate is coated in part with a catalyst washcoat composition, wherein a second porous structure of a washcoated part of the porous substrate contains pores of a second mean pore size, wherein the second mean pore size is less than the first mean pore size, which catalyst washcoat composition being disposed in a first zone comprising the inlet surfaces of a first substrate length less than the total substrate length, wherein a second zone comprising the outlet surfaces of a second substrate length cont

Abstract: A catalyzed filter for a positive ignition internal combustion engine comprises a porous filtering substrate having a total substrate length coated with a three-way catalyst washcoat composition comprising at least one precious metal selected from the group consisting of rhodium and one or both of platinum and palladium supported on a high surface area oxide, and an oxygen storage component, which composition being axially shared by a first zone comprising inlet surfaces of a first substrate length<total substrate length and a second zone comprising outlet surfaces of a second substrate length<total substrate length, wherein a sum of the substrate length in the first zone and the substrate length in the second zone?100% and wherein one or both of the following applies: a washcoat loading in the first zone>second zone; and a total precious metal loading in the first zone>second zone.

Abstract: A positive ignition engine comprising an exhaust system, which comprises a catalysed filter for filtering particulate matter from exhaust gas emitted from a positive ignition internal combustion engine, which filter comprising a porous substrate having a total substrate length and having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a first porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a washcoat composition which is a NOx absorber catalyst washcoat composition comprising at least one precious metal; or a selective catalytic reduction (SCR) catalyst washcoat composition, wherein a second porous structure of the washcoated porous substrate contains pores of a second mean pore size, wherein the second mean pore size is less than the first mean pore size, which NOx absorber catalyst washcoat or SCR catalyst washcoat being axially arranged on the porous substrate as a first zone comprising the inl

Abstract: A catalysed filter for filtering particulate matter from exhaust gas emitted from a positive ignition internal combustion engine comprises a ceramic porous wall-flow filter substrate having a total substrate length and having inlet channels defined in part by ceramic inlet wall surfaces and outlet channels defined in part by ceramic outlet wall surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a first porous structure containing pores of a first mean pore size, wherein the porous substrate is coated in part with a catalyst washcoat composition, wherein a second porous structure of a washcoated part of the porous substrate contains pores of a second mean pore size, wherein the second mean pore size is less than the first mean pore size, which catalyst washcoat composition being disposed in a first zone comprising the inlet surfaces of a first substrate length less than the total substrate length, wherein a second zone comprising the outlet surfaces of a second substrate length cont

Abstract: A positive ignition engine comprising an exhaust system, which comprises a catalysed filter for filtering particulate matter from exhaust gas emitted from a positive ignition internal combustion engine, which filter comprising a porous substrate having a total substrate length and having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a first porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a washcoat composition which is a NOx absorber catalyst washcoat composition comprising at least one precious metal; or a selective catalytic reduction (SCR) catalyst washcoat composition, wherein a second porous structure of the washcoated porous substrate contains pores of a second mean pore size, wherein the second mean pore size is less than the first mean pore size, which NOx absorber catalyst washcoat or SCR catalyst washcoat being axially arranged on the porous substrate as a first zone comprising the inl

Abstract: An assessment results viewer displays the results of assessments that quantify the performance of an aspect of a computing device. The viewer presents both an overview of the collected data and mechanisms for displaying ever-increasing details, including raw data itself. The viewer further provides actionable information to the user that can offer the user guidance, or otherwise suggest potential courses of action. The viewer automatically aggregates multiple iterations of the same assessment to generate derivative overview data, and automatically aligns data collected by the same assessment across multiple job files. Such aggregation and alignment is performed by reference to metadata, including identifying information. Data can be presented in tabular form, and users can pivot along different axis to focus on groupings of data.

Abstract: A catalysed filter for a positive ignition internal combustion engine comprises a porous filtering substrate having a total substrate length coated with a three-way catalyst washcoat composition comprising at least one precious metal selected from the group consisting of rhodium and one or both of platinum and palladium supported on a high surface area oxide, and an oxygen storage component, which composition being axially shared by a first zone comprising inlet surfaces of a first substrate length<total substrate length and a second zone comprising outlet surfaces of a second substrate length<total substrate length, wherein a sum of the substrate length in the first zone and the substrate length in the second zone?100% and wherein one or both of the following applies: a washcoat loading in the first zone>second zone; and a total precious metal loading in the first zone>second zone.

Abstract: An exhaust system for a vehicular positive ignition internal combustion engine comprises a filter for filtering particulate matter from exhaust gas emitted from the engine, which filter comprising a porous substrate having inlet and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a three-way catalyst washcoat comprising a plurality of solid particles wherein the porous structure of the washcoated porous substrate contains pores of a second mean pore size, which is less than the first mean pore size, and a three-way catalyst washcoat disposed on a separate substrate monolith located upstream of the filter, wherein a mass of three-way catalyst washcoat on the upstream substrate monolith is ?75% of the total mass of three-way catalyst washcoat in the exhaust system.

Abstract: An assessment results viewer displays the results of assessments that quantify the performance of an aspect of a computing device. The viewer presents both an overview of the collected data and mechanisms for displaying ever-increasing details, including raw data itself The viewer further provides actionable information to the user that can offer the user guidance, or otherwise suggest potential courses of action. The viewer automatically aggregates multiple iterations of the same assessment to generate derivative overview data, and automatically aligns data collected by the same assessment across multiple job files. Such aggregation and alignment is performed by reference to metadata, including identifying information. Data can be presented in tabular form, and users can pivot along different axis to focus on groupings of data.

Abstract: A filter for filtering particulate matter (PM) from exhaust gas emitted from a positive ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a washcoat comprising a plurality of solid particles wherein the porous structure of the washcoated porous substrate contains pores of a second mean pore size, and wherein the second mean pore size is less than the first mean pore size.

Abstract: An exhaust system for a vehicular positive ignition internal combustion engine comprises a filter for filtering particulate matter from exhaust gas emitted from the engine, which filter comprising a porous substrate having inlet and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a three-way catalyst washcoat comprising a plurality of solid particles wherein the porous structure of the washcoated porous substrate contains pores of a second mean pore size, which is less than the first mean pore size, and a three-way catalyst washcoat disposed on a separate substrate monolith located upstream of the filter, wherein a mass of three-way catalyst washcoat on the upstream substrate monolith is ?75% of the total mass of three-way catalyst washcoat in the exhaust system.

Abstract: A filter for filtering particulate matter (PM) from exhaust gas emitted from a positive ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a washcoat comprising a plurality of solid particles wherein the porous structure of the washcoated porous substrate contains pores of a second mean pore size, and wherein the second mean pore size is less than the first mean pore size.

Abstract: The present invention relates to a reference current circuit. The reference circuit comprises a low-level current bias circuit, a voltage proportional-to-absolute temperature generator for creating a proportional-to-absolute temperature voltage (VPTAT), and a MOSFET-based constant-IC regulator circuit. The MOSFET-based constant-IC regulator circuit includes a constant-IC input and constant-IC output. The constant-IC input is electrically connected with the VPTAT generator such that the voltage proportional-to-absolute temperature is the input into the constant-IC regulator circuit. Thus the constant-IC output maintains the constant-IC ratio across any temperature range.

Abstract: The present invention relates to a reference current circuit. The reference circuit comprises a low-level current bias circuit, a voltage proportional-to-absolute temperature generator for creating a proportional-to-absolute temperature voltage (VPTAT), and a MOSFET-based constant-IC regulator circuit. The MOSFET-based constant-IC regulator circuit includes a constant-IC input and constant-IC output. The constant-IC input is electrically connected with the VPTAT generator such that the voltage proportional-to-absolute temperature is the input into the constant-IC regulator circuit. Thus the constant-IC output maintains the constant-IC ratio across any temperature range.

Abstract: A system for integration and testing of remote telephone loops allows the integration of remote telephone units to a serving switch located in a different central office facility. The remote integration provides integration of voice and data services, as well as a mechanized loop testing capability. Test signals may be provided via transport facilities from the serving switch to the remote terminal so that remote telephone loops can be tested and results passed to the metallic test bus unit of the serving switch.