A cleaning system for removal of contaminants from a surface of a vehicle component exposed to a gas or fluid flow, the cleaning system comprising: an excitation device adapted to be attached to the vehicle component in the vicinity of the surface exposed to contaminants, wherein the excitation device is configured to cause the surface to mechanically vibrate by transferring a vibrational excitation to the surface; wherein the frequency of the vibrational excitation is controllable to be based on the configuration of the vehicle component as well as other modelled/measured parameters.

A replacement kit for use with a motor vehicle that was originally equipped with an exhaust system including an exhaust manifold and a catalytic converter welded thereto. The replacement kit includes a replacement catalytic converter arranged for use during use of the motor vehicle on public roads. Rather than welding, the replacement catalytic converter attaches to the exhaust manifold using a clamp to form a gas-tight seal. The clamp is arranged to move from the closed position to an open position to enable disengagement of the replacement catalytic converter from the exhaust manifold and substitution of a bypass pipe in place of the replacement catalytic converter to increase performance characteristics of the vehicle during off-road use.

Embodiments of a tank cover for covering a diesel exhaust fluid tank of a vehicle. The tank cover can be added directly over a diesel exhaust fluid tank or can be used to replace a factory/OEM or other replacement cover. In some embodiments, the tank cover can be easily installed onto a vehicle through existing components, and no additional drilling may need to be performed.

An exhaust after-treatment assembly for an engine system is provided. The exhaust after-treatment assembly includes a housing having an inlet port, an outlet port, a catalyst disposed within a cavity defined by the housing, and a muffler assembly disposed within the cavity downstream of the catalyst. The muffler assembly includes one or more baffle plates disposed longitudinally spaced from one another within the housing to define at least a first resonator chamber and a second resonator chamber. Each of the baffle plates defines an openings aligned to one another about a longitudinal axis of the housing. Further, a resonator tube extends through the openings of the baffle plates and includes an inlet, a perforated portion and one or more outlet ports formed in a wall of the resonator tube. The perforated portion and the outlet ports, respectively in fluid communication with the second resonator chamber and the first resonator chamber.

A replacement kit for use with a motor vehicle that was originally equipped with an exhaust system including an exhaust manifold and a catalytic converter welded thereto. The replacement kit includes a replacement catalytic converter arranged for use during use of the motor vehicle on public roads. Rather than welding, the replacement catalytic converter attaches to the exhaust manifold using a clamp to form a gas-tight seal. The clamp is arranged to move from the closed position to an open position to enable disengagement of the replacement catalytic converter from the exhaust manifold and substitution of a bypass pipe in place of the replacement catalytic converter to increase performance characteristics of the vehicle during off-road use.

An improved apparatus for repairing broken mounting holes in engines, such as broken exhaust manifold mounting holes, is disclosed. The adjustable template can be readily mounted to different components on different types of engines and provides adjustable carriages that allow for the precise alignment of bushing and various repair tools to facilitate repair of broken mounting holes.

A method of extending the useful life of an aged selective catalytic reduction (SCR) catalyst bed, which catalyses the conversion of oxides of nitrogen (NO.sub.x) to dinitrogen (N.sub.2) in the presence of a nitrogenous reductant, in the exhaust gas after treatment system of a stationary source of NO.sub.x so that the exhaust gas emitted to atmosphere from the system continues to meet proscribed limits for both NO.sub.x and ammonia emissions, which method comprising the step of retrofitting an additional honeycomb substrate monolith or a plate-type substrate comprising a catalyst (ASC) for converting ammonia in exhaust gas also containing oxygen to nitrogen and water downstream of the aged SCR catalyst bed, wherein the kNO.sub.x of the honeycomb substrate monolith comprising the catalyst for converting ammonia in exhaust gas also containing oxygen to nitrogen and water is greater than or equal to 80 m/hr between 300 and 400 C. inclusive, wherein kNOx of a sample of the catalyst, which has been aged at 450 C. in 10% H.sub.2O (as steam) in air for 48 hours, is determined by a SCR activity test in a laboratory scale reactor using a gas composition of 50 ppm CO, 30 ppm NO, 36 ppm NH.sub.3, 15% O.sub.2, 8% water, 3% CO.sub.2, balance N.sub.2.

An improved apparatus for repairing broken mounting holes in engines, such as broken exhaust manifold mounting holes, is disclosed. The adjustable template can be readily mounted to different components on different types of engines and provides adjustable carriages that allow for the precise alignment of bushing and various repair tools to facilitate repair of broken mounting holes.

A cleaning system for removal of contaminants from a surface of a vehicle component exposed to a gas or fluid flow, the cleaning system comprising: an excitation device adapted to be attached to the vehicle component in the vicinity of the surface exposed to contaminants, wherein the excitation device is configured to cause the surface to mechanically vibrate by transferring a vibrational excitation to the surface; wherein the frequency of the vibrational excitation is controllable to be based on the configuration of the vehicle component as well as other modelled/measured parameters.

Provided is a catalytic converter (1) for cleaning exhaust gases in pre catalytic converter vehicles. The catalytic converter (1) comprises a body of an elongated shape having a first end portion (11) and a second end portion (12). The first end portion (11) comprises an exhaust inlet (110) through which exhaust gases from the engine enters and the second end portion (12) comprises an exhaust outlet (120) through which the treated gases exit. The body has an internal space (14), wherein the internal space (14) at least partially comprises a plurality elongated passages (140) which are in fluid communication with said exhaust inlet (110) and exhaust outlet (120), the passages (14) being arranged at a density of 100-200 cells per square inch (cpsi).