The systems and methods described herein beneficially provide an exit gas having a third, relatively low, NO/NO.sub.2 ratio that closely approximates the NO/NO.sub.2 ratio found in the exhaust of various internal combustion engines. The systems and methods described herein receive a feed gas having a first, relatively high NO/NO.sub.2 ratio. The feed gas is apportioned into a first feed gas portion that is passed through a non-thermal plasma generation system to provide an intermediate gas having a second, relatively very low, NO/NO.sub.2 ratio and a second feed gas portion having the first NO/NO.sub.2 ratio. The intermediate gas and the second feed gas portion are combined to provide the exist gas having the third, relatively low, NO/NO.sub.2 ratio. The systems and methods described herein beneficially provide an exit gas having a variable NO/NO.sub.2 ratio to simulate exhaust from a variety of internal combustion engines.

A transfer module for transferring power to a non-thermal plasma generator includes a power cable; a first epoxy; a second epoxy; an interface between the first epoxy and the second epoxy; and a well; the power cable including a conductor for conducting electrical power and an insulation layer for surrounding a portion of the conductor; the first epoxy being located within the well to surround the insulation layer; the second epoxy being located within the well to surround the conductor located within the well; the second epoxy being located outside the well to surround the conductor located outside the well.

A transfer module for transferring power to a non-thermal plasma generator includes a power cable; a first epoxy; a second epoxy; an interface between the first epoxy and the second epoxy; and a well; the power cable including a conductor for conducting electrical power and an insulation layer for surrounding a portion of the conductor; the first epoxy being located within the well to surround the insulation layer; the second epoxy being located within the well to surround the conductor located within the well; the second epoxy being located outside the well to surround the conductor located outside the well.

Systems, methods, and apparatus are contemplated in which a tube cell that produces a dielectric barrier discharge (DBD) is individually configured to minimize the mixing of unwanted byproducts of the generated plasma with an exhaust air stream. The tube cell generates a DBD within a tube cell, such that oxidants or radicals are generated in an environment substantially separated from the exhaust stream. The generated oxidants are directed to intersect with the exhaust stream to minimize the generation of unwanted byproducts. The tube cells are further shaped and arranged in tube cell arrays to alter the flow dynamics of the exhaust stream and the oxidant or radical streams, including mixing of the streams.

The invention relates to an improved method and to an improved device for degassing polymer melts and for neutralizing the thus produced pollutants, characterised by the following characteristics: said pollutants are guided to a plasma source after removal from the degassing area and prior to adding to a filter step or a separator, said plasma source being built and/or formed such that in said plasma source, the pollutants are transformed, entirely or partially, in a plasma aggregate state.

The instant invention is based on techniques for using non-thermal plasma reactors in both the main exhaust pipe and in the exhaust gas recirculation feed pipe to reduce particulate matter sufficiently to meet EPA limits for PM and enhanced exhaust gas recirculation to meet NOx limits. More specifically, it is based upon the use of a non-thermal plasma device in which a high voltage charge in the plasma reactor causes extremely rapid oxidation of soot particles in the exhaust stream of an engine and further chemical reactions that aid in the reduction of NOx. The primary benefit of this technology is that it can be calibrated to optimize both soot and NOx reduction.

A device increasing engine efficiency and reducing exhaust and noise, comprising: the liquid catalyst pressured spraying exhaust gas reducing system, the exhaust gas bypass pipe, and the high temperature plasma exhaust gas reducing device, and the three are linked to achieve the effect of: without replacing the catalytic converter, the catalyst carrier can easily remove accumulated dirt and the block on the through holes, reduce the resistance of the exhaust gas, increase the horsepower of the engine, etc., thereby improving the efficiency of the engine and reducing the exhaust gas, so as to achieve degrading pollutants, makes vehicles comply with environmental regulations, and saves maintenance costs.

An exhaust gas post-processing system according to an embodiment of the present invention includes: an exhaust flow path for moving an exhaust gas discharged from an engine; at least one aftertreatment device installed on the exhaust flow path and purifying the exhaust gas; a burner installed on the exhaust flow path and heating the exhaust gas upstream of the at least one aftertreatment device; a fuel supplier for supplying a fuel to the burner; and an air supply flow path for supplying an air to the burner. The air supply flow path supplies a part of the exhaust gas discharged from the engine as the air to the burner.

The systems and methods described herein beneficially provide an exit gas having a third, relatively low, NO/NO.sub.2 ratio that closely approximates the NO/NO.sub.2 ratio found in the exhaust of various internal combustion engines. The systems and methods described herein receive a feed gas having a first, relatively high NO/NO.sub.2 ratio. The feed gas is apportioned into a first feed gas portion that is passed through a non-thermal plasma generation system to provide an intermediate gas having a second, relatively very low, NO/NO.sub.2 ratio and a second feed gas portion having the first NO/NO.sub.2 ratio. The intermediate gas and the second feed gas portion are combined to provide the exist gas having the third, relatively low, NO/NO.sub.2 ratio. The systems and methods described herein beneficially provide an exit gas having a variable NO/NO.sub.2 ratio to simulate exhaust from a variety of internal combustion engines.

An engine assembly includes a diesel internal combustion engine and an aftertreatment system coupled to the diesel internal combustion engine. The aftertreatment system includes a diesel oxidation catalyst coupled to the diesel internal combustion engine such that the diesel oxidation catalyst receives exhaust gases from the diesel internal combustion engine. The aftertreatment system includes a plasma generator in fluid communication with the diesel oxidation catalyst, wherein the plasma generator is upstream of the diesel oxidation catalyst and downstream of the diesel internal combustion engine, and the plasma generator is configured to generate oxidizers to at least partially oxidize hydrocarbons in the exhaust gases exiting the diesel internal combustion engine.