To reduce an OSC material, while maintaining necessary OSC capacity; and to improve heat resistance and reactivity of a precious metal. Proposed is an exhaust gas purifying catalyst which comprises a first catalyst layer that is formed on the surface of a substrate that is formed of a ceramic or a metal, and a second catalyst layer that is formed on the upper side of the first catalyst layer. The first catalyst layer comprises a precious metal, an OSC material and an alumina, and the OSC material and the alumina are comprised at a mass ratio of OSC material:alumina=1:7 to 1:3. The second catalyst layer comprises a precious metal, an OSC material and an alumina, and the OSC material and the alumina are comprised at a mass ratio of OSC material:alumina=1:1 to 10:0.

A method for operating an exhaust gas burner (3) downstream of an internal combustion engine (1) and upstream of an exhaust gas catalytic converter (4), comprising controlling an ignition device (12) of the exhaust gas burner (3) during a predeterminable preheating phase without supplying fuel (11) to the exhaust gas burner (3) during the preheating phase and, after completion of the preheating phase, supplying fuel (11) to the exhaust gas burner (3) and burning the supplied fuel (11) in the exhaust gas burner (3). A processor unit and a computer program product for carrying out such a method are furthermore proposed.

An electrically heated catalyst device includes a catalyst support supporting a catalyst, a surface electrode disposed on an outer surface of the catalyst support and extending in an axis direction of the catalyst support, a wiring line member including a root section extending in the axis direction of the catalyst support and comb teeth-like wiring lines extending from the root section in a circumferential direction of the catalyst support and fixed to the surface electrode, an outer cylinder covering an outer surface of the catalyst support, and a holding member holding the catalyst support and packed between the catalyst support and the outer cylinder, in which the catalyst support is heated by feeding a current through the surface electrode and the wiring line member. At least a plurality of through-holes or a plurality of protrusions are formed in the root section covered by the holding member.

A fluid injection system includes a mixing chamber locatable in an exhaust gas conduit upstream of a selective catalytic reduction device for providing an exhaust gas flow path and space for receiving injected fluid, an injector with a plurality of bundled capillary tubes each having an inlet configured to receive a fluid for injection into the chamber and an outlet wherein the injector is mounted on the chamber with the tube outlets in fluid communication with the chamber space, a base plate disposed in the chamber spaced from and aligned with the bundled tubes, a voltage supply connected to the tubes and to the base plate for providing a charge to the tubes and to the base plate to create an electric field to the fluid in the tubes, and a valve disposed on a wall of the chamber for at least one of priming and purging of the tubes.

Continuous fuel flow enhancer device for internal combustion engines has two internal solid phases in the fuel circulation where the following components intervene: silica gel (SiO2 nH2O) which performs a dehydration process, and in a second phase, activated carbon for organic compounds intervene, which performs an adsorption, purification and dehydration process.

The invention relates to a coating suspension containing at least one platinum group metal on a support material, as well as manganese(II) carbonate, and to a method for coating a catalyst support substrate.

An electrically heated catalytic device includes a carrier that supports a catalyst, a surface electrode provided on an outer circumferential surface of the carrier, and metal electrodes arranged side by side on the surface electrode. The surface electrode includes an arrangement region where the metal electrodes are arranged and a non-arrangement region where the metal electrodes are not arranged. The metal electrodes are spaced apart from one another in an axial direction of the carrier in the arrangement region. The non-arrangement region is adjacent to the arrangement region in the axial direction of the carrier. An electrical resistance of the non-arrangement region is higher than an electrical resistance of the arrangement region in the surface electrode.

The invention relates to a wall-flow filter, to a method for the production and the use of the filter for reducing harmful exhaust gases of an internal combustion engine. The wall-flow filter was produced by exposing the filter at least twice successively to a powder-gas aerosol.

To provide an exhaust gas purification filter having a high capability of collecting particulate matter. The exhaust gas purification filter includes a filter base material having a wall flow structure and an exhaust gas purification catalyst. A wash coating amount of the exhaust gas purification catalyst ranges from 60 to 110 g/L or less. When the exhaust gas purification filter is divided into an upstream part, a middle part, and a downstream part, and average values of catalyst area ratios of the exhaust gas purification catalyst supported by surfaces of the partition walls are acquired at predetermined locations in cells on an inflow side and cells on an outflow side, a minimum value, among the average values, is 28% or greater. A maximum value, among sizes of pores in the partition walls after the exhaust gas purification catalyst is supported, is 14.6 μm or less.

An exhaust gas aftertreatment system for an internal combustion engine charged by an exhaust gas turbocharger and spark-ignited by means of spark plugs has a particulate filter and a first three-way catalytic converter downstream from the particulate filter in a position close to the engine in an exhaust gas system connected to an outlet of the internal combustion engine and another three-way catalytic converter arranged in the underbody position of the motor vehicle, downstream from the first three-way catalytic converter. An exhaust gas burner is active from the start of the engine, introducing hot exhaust gas into the exhaust gas system downstream from the particulate filter, in order to heat at least one of the three-way catalytic converts to a light-off temperature, as quickly as possible after the cold start, thereby allowing an efficient exhaust gas aftertreatment. The exhaust gas burner can be switched off when at least one of the two three-way catalytic converters has reached its light-off temperature.