Abstract: A rotary pump can pump a liquid for pollution control of exhaust gases in a system on board a vehicle and can include a rotor and a stator that are positioned in a casing. The casing can include a wall delimiting a main internal volume and an integral outlet pipe for the pump. A pressure sensor can be positioned within the main internal volume of the casing.

Abstract: A system and a process for storing an additive solution and injecting it into the exhaust gases of an internal combustion engine. The system comprises at least one tank for storing the additive, one pump equipped with an inlet and an outlet and that is capable of generating a direct flow (in injection mode) or a reverse flow (in drawing off mode), at least two additive solution suction points, and an injector, wherein a first suction point is connected to the pump inlet and is only active when the pump operates in injection mode, and wherein the second suction point is connected to the pump outlet and is only active when the pump operates in drawing off mode.

Abstract: Process for starting an SCR system intended for transporting urea from a tank to the exhaust gases of an engine using a feed line, this system comprising a rotary pump controlled by a controller and driven by a brushless direct current (BLDC) motor that comprises a rotor equipped with at least one permanent magnet and with a stator comprising at least 3 electromagnetic coils in which the direct current can flow according to a given sequence to make the rotor rotate, according to which, before starting the pump, a temperature is measured using a sensor and if this temperature is below a setpoint temperature, before making the rotor rotate, the current is passed through at least one of the coils in a way such that it preheats the pump without making the rotor rotate.

Abstract: Process for transferring a liquid from a passive tank (1) for storing the liquid to an active tank (2) using a pump intended for pumping the liquid held in the passive tank (1) and transferring it to the active tank (2), according to which the pump is commanded so as to transfer liquid from the passive tank (1) to the active tank (2) when said active tank (2) has a liquid level below a set point level Lsp and when the passive tank (1) contains liquid at a temperature above the freezing point of the liquid.

Abstract: A system and a process for storing an additive solution and injecting it into the exhaust gases of an internal combustion engine. The system comprises at least one tank for storing the additive, one pump equipped with an inlet and an outlet and that is capable of generating a direct flow (in injection mode) or a reverse flow (in drawing off mode), at least two additive solution suction points, and an injector, wherein a first suction point is connected to the pump inlet and is only active when the pump operates in injection mode, and wherein the second suction point is connected to the pump outlet and is only active when the pump operates in drawing off mode.

Abstract: Rotary pump intended to pump a liquid for the pollution control of exhaust gases in a system on board a vehicle and comprising a rotor (4), a stator (5) that are positioned in a casing comprising a wall delimiting a main internal volume and integrating an outlet pipe for the pump, and a pressure sensor (2) which is positioned within the main internal volume of the casing.

Abstract: Process for transferring a liquid from a passive tank (1) for storing the liquid to an active tank (2) using a pump intended for pumping the liquid held in the passive tank (1) and transferring it to the active tank (2), according to which the pump is commanded so as to transfer liquid from the passive tank (1) to the active tank (2) when said active tank (2) has a liquid level below a set point level Lsp and when the passive tank (1) contains liquid at a temperature above the freezing point of the liquid.

Abstract: Process for starting an SCR system intended for transporting urea from a tank to the exhaust gases of an engine using a feed line, this system comprising a rotary pump controlled by a controller and driven by a brushless direct current (BLDC) motor that comprises a rotor equipped with at least one permanent magnet and with a stator comprising at least 3 electromagnetic coils in which the direct current can flow according to a given sequence to make the rotor rotate, according to which, before starting the pump, a temperature is measured using a sensor and if this temperature is below a setpoint temperature, before making the rotor rotate, the current is passed through at least one of the coils in a way such that it preheats the pump without making the rotor rotate.