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Patent
Hyundai Motor Company, FEV Motorentechnik GmbH and Kia Motors | Date: 2012-06-06

A method for predicting regeneration of a DeNOx catalyst can precisely predict NOx amount and NO2 amount remaining in the DeNOx catalyst after regeneration and to exhaust system which controls regeneration timing of the DeNOx catalyst and injection amount of reducing agent. The method may include calculating total mass flow of reducing agent, calculating mass flow of the reducing agent used in nitrate reduction reaction, mass flow of the reducing agent used in NO2 reduction reaction, and mass flow of the reducing agent which is simply oxidized by using the total mass flow of the reducing agent, calculating mass flow of released NO2 and mass flow of reduced NO2 by using the mass flow of the reducing agent used in the nitrate reduction reaction and the mass flow of the reducing agent used in the NO2 reduction reaction, calculating mass flow of NO2 slipped from DeNOx catalyst, and calculating mass of NO2 and mass of NOx remaining at the DeNOx catalyst after regeneration based on the mass flow of the released NO2, the mass flow of the reduced NO2, and the mass flow of the slipped NO2.


Patent
Hyundai Motor Company, Kia Motors and FEV Motorentechnik GmbH | Date: 2012-06-06

A method is provided for predicting NOx loading at a DeNOx catalyst by which a NOx amount actually stored in the DeNOx catalyst can be precisely predicted and to an exhaust system which controls a regeneration timing of the DeNOx catalyst and amount of a reducing agent which is injected by using the method. The method may include calculating mass flow of NOx stored at the DeNOx catalyst, calculating mass flow of NOx thermally released from the DeNOx catalyst, calculating mass flow of NOx chemically released from the DeNOx catalyst, and calculating NOx amount actually stored at the DeNOx catalyst by using the mass flow of NOx stored at the DeNOx catalyst, the mass flow of NOx thermally released from the DeNOx catalyst, and the mass flow of NOx chemically released from the DeNOx catalyst.


Patent
Hyundai Motor Company, Kia Motors and FEV Motorentechnik GmbH | Date: 2012-05-23

A method for predicting a NOx amount, may include determining a reference NOx amount according to a driving condition of an engine, primarily correcting the reference NOx amount according to an exhaust gas recirculation (EGR) ratio, and secondarily correcting the primarily corrected NOx amount according to an environmental factor and the driving condition.


Patent
Hyundai Motor Company, FEV Motorentechnik GmbH and Kia Motors | Date: 2011-06-30

A method for predicting a NOx amount may include detecting an O2 amount in an intake air, calculating a reference O2 amount in the intake air according to a driving condition of an engine, calculating a reference NOx amount contained in an exhaust gas according to the driving condition of the engine, and primarily correcting the reference NOx amount based on the detected O2 amount in the intake air and the reference O2 amount in the intake air according to the driving condition of the engine.


Patent
Hyundai Motor Company, FEV Motorentechnik GmbH and Kia Motors | Date: 2011-06-30

A method for predicting a NOx amount, may include determining a reference NOx amount according to a driving condition of an engine, primarily correcting the reference NOx amount according to an exhaust gas recirculation (EGR) ratio, and secondarily correcting the primarily corrected NOx amount according to an environmental factor and the driving condition.


Patent
FEV Motorentechnik GmbH | Date: 2011-04-20

A hybrid drive system with first drive means 11especially a combustion engineand second drive means 12especially an electric machinefor driving a transmission output shaft 20 of a transmission 10 for a vehicle is provided. The transmission 10 can include a first shiftable partial transmission 15 with a first main shaft 17, which is connectable by means of a first group of shiftable gear pairs 41/51, 45/52, 43/53, 44/54 to an intermediate shaft 28, wherein the first drive means 11 are connectable to the first main shaft 17 of the first shiftable partial transmission 15. In addition, a second shiftable partial transmission 16 with a second main shaft 18, which is connectable by means of a second group of shiftable gear pairs 45/51, 46/52, 47/53, 48/54 to the intermediate shaft 28, can be included. At least one shiftable gear pair of the first shiftable partial transmission 15 is formed by two shiftable idlers 41, 51, a first of the two shiftable idlers 41 is connectable via a shifting element A to the first main shaft 17 and a second of the two shiftable idlers 51 is connectable via a shifting element C to the intermediate shaft 28.


Patent
Hyundai Motor Company, Kia Motors and FEV Motorentechnik GmbH | Date: 2012-05-23

A method for predicting a NOx amount may include detecting an 02 amount in an intake air, calculating a reference 02 amount in the intake air according to a driving condition of an engine, calculating a reference NOx amount contained in an exhaust gas according to the driving condition of the engine, and primarily correcting the reference NOx amount based on the detected 02 amount in the intake air and the reference 02 amount in the intake air according to the driving condition of the engine.


Patent
Hyundai Motor Company, Kia Motors and FEV Motorentechnik GmbH | Date: 2012-06-06

A method for predicting sulfur oxides (SOx) stored at a denitrification (DeNOx) catalyst may include calculations of the mass flow of SOx poisoned at the DeNOx catalyst (S360), the mass flow of SOx released from the DeNOx catalys (S370), and the SOx amount poisoned at the DeNOx catalyst (S390) by integrating the value obtained by subtracting the released mass flow of SOx from the poisoned mass flow of SOx. An exhaust system using the method may comprise an engine (10) having a first injector (14), an exhaust pipe (20), a second injector (90) mounted at the exhaust pipe (20) and injecting a reducing agent, a DeNOx catalyst (40) mounted at the exhaust pipe (20) and reducing SOx or nitrogen oxides (NOx) or both contained in the exhaust gas by using the reducing agent, and a control portion (50) electrically connected to the system and performing the calculations and controls.


Patent
Hyundai Motor Company, FEV Motorentechnik GmbH and Kia Motors | Date: 2011-09-13

A method for predicting regeneration may include calculating total mass flow of reducing agent, calculating mass flow of the reducing agent used in nitrate reduction reaction, mass flow of the reducing agent used in NO2 reduction reaction, and mass flow of the reducing agent which is simply oxidized by using the total mass flow of the reducing agent, calculating mass flow of released NO2 and mass flow of reduced NO2 by using the mass flow of the reducing agent used in the nitrate reduction reaction and the mass flow of the reducing agent used in the NO2 reduction reaction, calculating mass flow of NO2 slipped from DeNOx catalyst, and calculating mass of NO2 and mass of NOx remaining at the DeNOx catalyst after regeneration based on the mass flow of the released NO2, the mass flow of the reduced NO2, and the mass flow of the slipped NO2.


Patent
Hyundai Motor Company, FEV Motorentechnik GmbH and Kia Motors | Date: 2011-09-14

A method for predicting sulfur oxides (SOx) stored at a denitrification (DeNOx) catalyst may include calculations of the mass flow of SOx poisoned at the DeNOx catalyst, the mass flow of SOx released from the DeNOx catalyst, and the SOx amount poisoned at the DeNOx catalyst by integrating the value obtained by subtracting the released mass flow of SOx from the poisoned mass flow of SOx. An exhaust system using the method may comprise an engine having a first injector, an exhaust pipe, a second injector mounted at the exhaust pipe and injecting a reducing agent, a DeNOx catalyst mounted at the exhaust pipe and reducing SOx or nitrogen oxides (NOx) or both contained in the exhaust gas by using the reducing agent, and a control portion electrically connected to the system and performing the calculations and controls.

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