A device to supply an internal combustion engine with water comprising one single tank of an exhaust system provided with exhaust gas after-treatment; the tank is divided, on the inside, into a first powder urea storage area and a second water collecting area, and wherein the powder urea and the water are mixed inside the tank so as to obtain a water solution of urea with a variable concentration, the device comprises at least one second electromagnetic injector, which is designed to inject water into the internal combustion engine, and a second pumping device, which is drowned inside the tank and draws from the second water collecting area in order to supply water under pressure to said at least one second electromagnetic injector.

An exhaust gas purification device (26) for a gas turbine engine (10) comprises a catalyst chamber (64, 96) defined in an exhaust gas passage (22), a reduction agent container (32) containing a solid material that releases a reduction agent gas effective for NOx reduction when heated, a heating device (36, 38) for heating the solid material contained in the reduction agent container, and a reduction agent gas supply passage (48) for supplying the reduction agent gas released from the solid material into the catalyst chamber.

An exhaust gas purifying facility of a combustion engine includes: a marine combustion engine; a reducing device for feeding urea water into an exhaust gas in an exhaust gas line of the marine combustion engine; and a generation device for generating the urea water from urea powder. The generation device includes a storage-generation tank device and an adjustment tank device capable of adjusting the density of the urea water. The storage-generation tank device has a storage-generation tank for storing the urea powder and feeding water to the urea powder for dissolution. The adjustment tank device has an adjustment tank for storing the urea water withdrawn from the storage-generation tank.

A method for increasing a catalytic efficiency of a catalyst, comprising providing a catalyst. Finally, the catalyst is installed into a selective catalytic reduction system of an aftertreatment system configured to reduce constituents of an exhaust gas generated by an engine. The catalyst is soaked in a liquid which consists essentially of one of water or a water-comprising solution. The soaking occurs at least one of before or after installing the catalyst in the selective catalytic reduction system. The catalyst can include a copper zeolite catalyst.

An exhaust system provided with exhaust gas after-treatment for a combustion engine comprising an exhaust pipe and a pumping device, which is buried inside the tank, from which it draws so as to feed a water solution of urea under pressure to an electromagnetic injector; the tank is supplied with urea powder and water, which are mixed on the inside so as to obtain a water solution of urea with a variable concentration; and a water supply circuit to supply water to the tank, which is provided with a first pipe, which draws the water from a basin and is regulated by a first valve, which allows water to be introduced into the tank, if necessary, or to be drained to the surrounding environment when the water quantity already contained in the tank is sufficient.

A module for use on-board a vehicle. The module includes a heater and at least a first and a second storage compartment. The first compartment at least partially surrounds the heater, and the second compartment at least partially surrounds the first compartment. The first compartment is configured to perform a first function in a first temperature range, and the second compartment is configured to perform a second function in a second temperature range, the second temperature range being lower than the first temperature range. The first compartment is in fluid communication with the second compartment. One function of the first and second function is receiving an ammonia precursor, and decomposing the ammonia precursor using a catalyst to generate an ammonia solution.

The disclosure relates to an ammonia storage structure in particular for the selective catalytic reduction of nitrogen oxides in the exhaust gases of combustion vehicles, including at least one storage material in which the ammonia can be stored, where the structure includes at least two different storage portions, each storage portion containing a storage material, and not all the storage materials of the different storage portions being identical. The disclosure also relates to an ammonia storage and removal system of a vehicle that includes a storage chamber, including such a storage structure. A selective catalytic reduction system for internal combustion engine exhaust gases, includes such an ammonia storage system and to a module for feeding ammonia into the exhaust gases.

A method for increasing a catalytic efficiency of a catalyst, comprising providing a catalyst. Finally, the catalyst is installed into a selective catalytic reduction system of an aftertreatment system configured to reduce constituents of an exhaust gas generated by an engine. The catalyst is soaked in a liquid which consists essentially of one of water or a water-comprising solution. The soaking occurs at least one of before or after installing the catalyst in the selective catalytic reduction system. The catalyst can include a copper zeolite catalyst.

A method for determining the quantity of reducing agent in a tank vehicle, including: a storage material in the tank for storing and releasing the reducing agent according to demand; a heating device to supply heat to release the reducing agent, and a control device for driving the heating device. After the motor vehicle is started, driving the heating device so that it delivers constant power during an initial phase over which the pressure inside the tank increases until it reaches a predetermined value. The heating device then regulating the pressure around a datum value; then measuring the time of the initial phase or the derivative of pressure with respect to time during this initial phase; and comparing the measured time against various calibrated values of the initial phase in order to determine the quantity of reducing agent in the tank.

A method is provided for loading or reloading a decomposition unit of an SCR system, the SCR system being mounted on board a vehicle and including a filler pipe in communication with the decomposition unit. The method is such that at least one capsule containing at least one protein component adapted to decompose ammonia precursor is introduced through the filler pipe and is then guided through the filler pipe towards the decomposition unit.