公开(公告)号：US11199146B2

公开(公告)日：2021-12-14

申请号：US16787786

申请日：2020-02-11

申请人： Bayerische Motoren Werke Aktiengesellschaft

发明人： Nikita Peters

IPC分类号： F02D41/06 ,  F02D13/02 ,  B60W10/06 ,  B60W10/08 ,  B60W20/40 ,  F02D41/02 ,  F02D41/24 ,  F02D41/32

摘要： An exhaust-gas purification system and method controls an internal combustion engine having at least one cylinder-piston unit operating in a overrun (drag) mode in which piston motion is induced by motion of an output shaft of a drive output unit associated with the internal combustion engine. A control device controls, for each of cylinder-piston unit, an intake fluid, an exhaust valve and fuel injection to heat an exhaust emission control device by deactivating fuel injection, passing the substantially fuel-free intake fluid into the cylinder, compressing and thereby heating the fluid in the cylinder, and passing the heated outlet fluid to the exhaust emission control device. The control device may control the amount of heating based on measurement and/or use of a temperature model of the exhaust emission control device.

公开(公告)号：US11002168B2

公开(公告)日：2021-05-11

申请号：US16968205

申请日：2019-03-13

申请人： Bayerische Motoren Werke Aktiengesellschaft

发明人： Nikita Peters

IPC分类号： F01N3/20 ,  B01D53/94 ,  F01N3/035 ,  F01N3/08 ,  F02D41/00 ,  F02D41/02 ,  F02M25/022 ,  F02M25/028 ,  F02M25/03

摘要： A method is provided for operating an internal combustion engine in a motor vehicle, The internal combustion engine has at least one cylinder with a combustion chamber, a water injection unit with a tank and at least one injection nozzle for directly or indirectly injecting water into the combustion chamber, an exhaust gas system with at least one exhaust gas catalytic converter and a particulate filter device which has a particulate filter for filtering particles out of an exhaust gas flow guided in the exhaust gas system. A control unit is provide for a state monitoring process and for controlling the combustion in the cylinder.