Patent application number | Description | Published |
20090205316 | System and processes for storing an additive and injecting it into the exhaust gases of an engine - System for storing an additive solution and injecting it into the exhaust gases of an internal combustion engine, the system comprising a tank for storing the additive and a rotary pump, a metering valve and an injector which are separate devices, this system making it possible to meter and inject the additive solution into the exhaust gases as is, without diluting it with a gas. In this system, the pump outlet pressure is regulated by adjusting the rotational speed of the pump. | 08-20-2009 |
20090205319 | Ammonia Precursor Storage System - A system for storing an ammonia precursor, comprising a tank, a filler pipe equipped With an obturator and a ventilation line establishing a direct connection between the filler pipe and a gas discharge duct and also a device designed to specifically open this connection once the obturator starts to be opened. | 08-20-2009 |
20090230136 | ENGINE EXHAUST GAS ADDITIVE STORAGE SYSTEM - System for storing an internal combustion engine exhaust gas liquid additive, the system comprising a tank for storing the additive and an “immersed” baseplate positioned through an opening made in the bottom wall of the tank, the baseplate comprising at least one orifice through which a system for injecting the additive into the exhaust gases can be fed, and also incorporating at least one other active component of the storage system and/or of the injection system. | 09-17-2009 |
20100043409 | Method and system for controlling the operation of a pump - Method for controlling the operation of a pump driven by an electric motor and controlled by a controller, according to which an electronic control module (ECM) sends, to the controller, a PWM (Pulse Width Modulation) control signal having a duty cycle that varies as a function of the desired operating conditions for the pump and according to which the controller acts on the electric motor to apply said operating conditions to the pump. | 02-25-2010 |
20100175369 | System for supplying a liquid for a vehicle and integrated pump/filter module - Supply system for a liquid comprising a liquid tank, a supply line, a pump, a filter and a device that makes it possible to purge the line, pump and filter and that comprises a non-return device preventing liquid from entering into these elements once they have been purged. In this system, the pump, filter and non-return device are combined in a compact module, the filter at least partly surrounding the pump and the non-return device being an integral part of a common housing that surrounds the filter and at least one part of the pump. | 07-15-2010 |
20100193530 | Line equipped with a coupling having an integrated heating element - A urea feed or return line ( | 08-05-2010 |
20100199648 | System for storing an additive solution and injecting it into the exhaust gases of an engine - System for storing an additive solution and injecting it into the exhaust gases of an engine, said system comprising two tanks for storing the solution and one pump for supplying the solution from these tanks to an injection line, these two tanks being in parallel and each being connected to the pump by a branch of a supply line, the branch (I) coming from the first tank ( | 08-12-2010 |
20100220984 | Urea tank and base plate with an integrated heating element - Urea tank and base plate with an integrated heating element in which the heating element comprises at least one flexible part which is preferably a flexible heater comprising at least one resistive track affixed to one flexible film and/or placed between two flexible films. | 09-02-2010 |
20110311373 | Rotary pump for a vehicle - 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 ( | 12-22-2011 |
20120324865 | METHOD FOR REGULATING A PUMP OF AN SCR SYSTEM - A method for regulating a motor-driven pump of an SCR system, the pump delivering a pressure, being subjected to a hydraulic torque in relation to this pressure and also to a resistive torque and being driven by an electric motor including coils supplied with a current and developing a torque in relation to this current, according to which to regulate the pump, use is made of a mechanism to measure the current in the coils of the motor, of a regulator of overall current consumed by the motor, and of a model of the relation between the current and the pressure using an estimate of part of the resistive torque, namely the dry frictions, obtained by rotating the pump under no-load conditions at different speeds and by measuring the associated current. | 12-27-2012 |
20130180323 | METHOD FOR MONITORING AN SCR SYSTEM - A method for detecting whether an injector with a valve controlled by a PWM signal of an SCR system is clogged, the SCR system including a rotary positive-displacement pump driven by a motor and pressure of which is controlled by a controller that continuously measures rotational speed of the motor and pressure at an outlet of the pump. During operation of the SCR system at a given pressure: the associated average rotational speed is measured; the speed is held at the measured value; a curve of a change in pressure is compared to reference curves stored in a memory and a condition of the injector, for example whether the injector is clogged or not, is deduced therefrom. | 07-18-2013 |
20130241192 | LINE EQUIPPED WITH A COUPLING HAVING AN INTEGRATED HEATING ELEMENT - A urea feed or return line (2) that comprises a hollow coupling (1) enabling it to be connected to a urea tank and that comprises a passage for the urea, this coupling being, in addition, equipped with a heating filament (9), at least one part of which extends freely inside the passage provided for the urea, this part having the shape of a loop or a spiral capable of also extending at least partly into the tank and/or into a tube attached thereto. | 09-19-2013 |
20130269418 | METHOD FOR MONITORING AN SCR SYSTEM - A method for detecting whether an injector with a valve controlled by a PWM signal of an SCR system is at least partially clogged, the system including a pump, or a positive-displacement pump, driven by a motor and pressure of which is controlled by a controller that continuously measures the pressure and/or another parameter characteristic of energy transmitted by the motor to the pump. According to the method, during normal operation of the SCR system, specific portions of one of the measurements are compared with equivalent portions stored in a memory. | 10-17-2013 |
20130334077 | ENGINE EXHAUST GAS ADDITIVE STORAGE SYSTEM - A system for storing an internal combustion engine exhaust gas liquid additive, and including a tank for storing the additive, the tank including two halve shells manufactured as two separate parts that are assembled, at least one of the shells including an active component fixed inside of it. | 12-19-2013 |
20140079610 | SYSTEM FOR SUPPLYING A LIQUID FOR A VEHICLE AND INTEGRATED PUMP/FILTER MODULE - A supply system for a liquid includes a liquid tank, a supply line, a pump, a filter, and a device that makes it possible to purge the line, pump, and filter. The supply system further includes a non-return device preventing liquid from entering into these elements once they have been purged. In this system, the pump, filter and non-return device are combined in a compact module. The filter at least partly surrounds the pump. The non-return device is an integral part of a common housing that surrounds the filter and at least one part of the pump. | 03-20-2014 |
20140093226 | UREA TANK AND BASE PLATE WITH AN INTEGRATED HEATING ELEMENT - Urea tank and base plate with an integrated heating element in which the heating element comprising at least one resistive track affixed to one flexible film and/or placed between two flexible films. | 04-03-2014 |
20140345258 | ENGINE EXHAUST GAS ADDITIVE STORAGE SYSTEM - System for storing an internal combustion engine exhaust gas liquid additive, the said system comprising a tank for storing the additive and an “immersed” baseplate ( | 11-27-2014 |