公开(公告)号：US12085002B2

公开(公告)日：2024-09-10

申请号：US18490133

申请日：2023-10-19

Applicant: VOLVO TRUCK CORPORATION

Inventor： Johan Dahl ,  Esteban Gelso

IPC: F01N3/20 ,  B01D53/94 ,  F02D41/00 ,  F02D41/02

CPC classification number: F01N3/208 ,  B01D53/9431 ,  B01D53/9495 ,  F02D41/0087 ,  F02D41/0235 ,  B01D2251/2067 ,  B01D2257/404 ,  B01D2258/01 ,  B01D2259/4566 ,  F01N2610/02 ,  F01N2900/08 ,  F01N2900/12 ,  F01N2900/1602 ,  F02D2200/0802

Abstract: A computer implemented method for controlling the operation of an engine system in a vehicle is provided. The engine system comprising an engine and an exhaust aftertreatment system for reducing at least NOx emissions of the exhaust gases from the engine using a reductant, the engine system comprising a plurality of engine system components configured to perform a plurality of NOx emission reducing activities.

公开(公告)号：US10060320B2

公开(公告)日：2018-08-28

申请号：US15106193

申请日：2013-12-19

Applicant: VOLVO TRUCK CORPORATION

Inventor： Fredrik Blomgren ,  Johan Dahl

IPC: F01N3/20 ,  F01N11/00

Abstract: A system is provided for determining a parameter indicative of an amount of a reducing agent in a selective catalytic reduction (SCR) module of a vehicle, the system including: the SCR module having at least one passage for transporting a stream of gas and an SCR catalyst for converting NOx emissions, and having an extension in an axial direction, at least one first antenna unit configured to transmit and receive a microwave signal. Moreover, the first antenna unit is arranged outside the SCR module and configured to transmit microwave signals towards the SCR catalyst and to receive a microwave signal reflected within the SCR module. The system further includes processing circuitry connected to the first antenna unit and configured to determine a difference between the transmitted microwave signal and the received reflected microwave signal and to determine a parameter indicative of the amount of a reducing agent in the SCR catalyst based on the determined difference between the transmitted microwave signal and the received reflected microwave signal. Moreover, the invention relates to a method for determining a parameter indicative of an amount of a reducing agent in a system of a vehicle.

公开(公告)号：US11946427B2

公开(公告)日：2024-04-02

申请号：US18304456

申请日：2023-04-21

Applicant: VOLVO TRUCK CORPORATION

Inventor： Johan Dahl

IPC: F02D41/02 ,  F01N11/00 ,  F02B37/18 ,  F02D13/04 ,  F02D41/00 ,  F02D41/30

CPC classification number: F02D41/0235 ,  F01N11/005 ,  F02B37/18 ,  F02D13/04 ,  F02D41/0087 ,  F01N2240/16 ,  F01N2430/02 ,  F01N2430/08 ,  F01N2430/10 ,  F02D2041/0012 ,  F02D41/3058

Abstract: A method for controlling the operation of an engine system in a vehicle is provided The engine system includes an engine configured to operate in at least a two-stroke combustion mode and a four-stroke combustion mode, and an exhaust aftertreatment system, EATS configured to reduce emissions from the engine exhausts. The method comprising estimating or predicting the temperature of the EATS; estimating or predicting the emissions out of the EATS; n response of that the temperature of the EATS is below a predetermined temperature threshold, and that the emissions out of the EATS is above a predetermined emission threshold, performing a primary NOx emission reducing activity by operating the engine in a two-stroke combustion mode; subsequently to initiating the operation of the engine in a two-stroke combustion mode, and in response of that the emissions out of the EATS is below the predetermined emission threshold, changing engine operation from the two-stroke combustion mode to a four-stroke combustion mode.

公开(公告)号：US11739674B2

公开(公告)日：2023-08-29

申请号：US17453767

申请日：2021-11-05

Applicant: VOLVO TRUCK CORPORATION

Inventor： Johan Dahl

IPC: F01N3/00 ,  F01N3/20 ,  B60W20/16 ,  B60W10/06 ,  B60W30/192 ,  F01N3/035

CPC classification number: F01N3/208 ,  B60W10/06 ,  B60W20/16 ,  B60W30/192 ,  F01N3/035 ,  B60W2510/068 ,  B60W2710/30 ,  F01N2250/02 ,  F01N2610/02

Abstract: A method for controlling the operation of an engine system in a vehicle. The engine system including an engine and an exhaust aftertreatment system having an SCR catalyst and a DPF. The method includes determining preview information of the vehicle operation based at least on an upcoming road event and an engine operation associated with the upcoming road event; performing, in response of the preview information, at least one of: controlling the operation of the engine system by increasing reductant injection to meet an ammonia storage threshold level; controlling the operation of the engine system by increasing the engine out NOx to reduce the ammonia storage in the SCR catalyst to meet an ammonia slip threshold level in the SCR catalyst; controlling the operation of the engine system by decreasing the engine out NOx to increase the amount of engine out particles to meet a soot threshold level in the DPF.

公开(公告)号：US11274589B2

公开(公告)日：2022-03-15

申请号：US14893108

申请日：2013-05-27

Applicant: VOLVO TRUCK CORPORATION

Inventor： Andreas Hamsten ,  Johan Dahl

IPC: F02D41/26 ,  F01N11/00 ,  F01N3/023 ,  F01N9/00 ,  F02D41/02 ,  F01N3/20

Abstract: A method for timing of a regeneration process of an exhaust gas system of a vehicle engine includes collecting, during operation of the vehicle, data on an exhaust gas regeneration capability as a function of time, establishing, from the collected data, a statistical probability function for the exhaust gas regeneration capability as a function of time, and identifying, from the probability function, one or several time periods that statistically are suitable and/or unsuitable for carrying out a regeneration process. A method for regeneration of an exhaust gas system of a vehicle engine is also provided.

公开(公告)号：US11873750B2

公开(公告)日：2024-01-16

申请号：US17935671

申请日：2022-09-27

Applicant: VOLVO TRUCK CORPORATION

Inventor： Johan Dahl ,  Martin Wilhelmsson ,  Oscar Stjernberg

IPC: F01N3/20 ,  H01M10/615 ,  H01M10/625 ,  H01M10/63 ,  H01M10/657 ,  F02M26/35 ,  B01D53/94 ,  H01M8/04007

CPC classification number: F01N3/2013 ,  B01D53/9418 ,  B01D53/9495 ,  F01N3/2066 ,  F02M26/35 ,  H01M8/04037 ,  H01M10/615 ,  H01M10/625 ,  H01M10/63 ,  H01M10/657 ,  B01D2255/911 ,  F01N2610/02 ,  F01N2610/1406 ,  H01M2220/20 ,  H01M2250/20

Abstract: A method for preconditioning at least a part of an engine system of a vehicle. The engine system includes an engine and an exhaust aftertreatment system, EATS. The method providing predicted vehicle operational information comprising a vehicle operational initialization time and predicted engine operation, determining whether or not cold-start emissions of the predicted engine operation achieves a threshold criterium, in response to achieving the threshold criterium, preconditioning at least a part of the engine system such that at least said part of the engine system is preconditioned at a time of the vehicle operational initialization time.

公开(公告)号：US09850795B2

公开(公告)日：2017-12-26

申请号：US14779019

申请日：2013-04-03

Applicant: RENAULT TRUCKS ,  VOLVO TRUCK CORPORATION

Inventor： Eduard Emil Iojoiu ,  Raphaël Pourret ,  Martin Petersson ,  Björn Häggendal ,  Johan Dahl

IPC: F01N3/18 ,  F01N3/20 ,  F02D41/02 ,  F01N3/027 ,  F01N3/035 ,  F01N3/023 ,  F01N3/10 ,  F01N13/00 ,  F01N9/00 ,  F02D41/14

CPC classification number: F01N3/2006 ,  F01N3/023 ,  F01N3/0231 ,  F01N3/0232 ,  F01N3/027 ,  F01N3/035 ,  F01N3/103 ,  F01N3/2066 ,  F01N9/002 ,  F01N9/005 ,  F01N13/009 ,  F01N2240/16 ,  F01N2900/0412 ,  F01N2900/0418 ,  F01N2900/0422 ,  F01N2900/0601 ,  F01N2900/0602 ,  F01N2900/08 ,  F01N2900/1404 ,  F01N2900/1602 ,  F01N2900/1606 ,  F01N2900/1621 ,  F02D41/029 ,  F02D41/1467 ,  F02D2041/1433 ,  F02D2200/0812 ,  Y02T10/47

Abstract: A process is provided for regenerating an exhaust gas after-treatment device in an exhaust line of an internal combustion engine arrangement, the exhaust line including a particle filter. The process includes identifying when soot loading of the particle filter exceeds a predetermined level. After that, temperature of exhaust gases at the particle filter is maintained within a first temperature range until at least one of a predetermined period of time has lapsed or a determination is made that soot loading of the particle filter is below the predetermined level. After that, the temperature of the exhaust gases at the particle filter is increased to within a second temperature range above the first temperature range. An internal combustion engine arrangement is also disclosed.

公开(公告)号：US11008966B2

公开(公告)日：2021-05-18

申请号：US16097625

申请日：2016-05-02

Applicant: VOLVO TRUCK CORPORATION

Inventor： Esteban Gelso ,  Johan Dahl

IPC: F02D41/14 ,  F02D41/02 ,  B60W20/11 ,  F01N9/00

Abstract: A method is provided for determining a position of at least one actuator of an internal combustion engine arrangement, the method including the steps of: receiving parameter values for engine performance parameters of the internal combustion engine arrangement at a first point in time; predicting at least one engine performance parameter value at an at least one second, future point in time; and determining an actuator position for the at least one actuator by an optimization using the parameter values at the first point in time and at the at least one second point in time as input.