公开(公告)号：US11845338B2

公开(公告)日：2023-12-19

申请号：US17123907

申请日：2020-12-16

Applicant: Rolls-Royce Solutions GmbH

Inventor： Helmut Knabe ,  Horst Weidele ,  Aron Toth

IPC: B60K6/485 ,  B60W10/08 ,  B60W10/06 ,  B60W20/40

CPC classification number: B60K6/485 ,  B60W10/06 ,  B60W10/08 ,  B60W20/40 ,  B60W2510/0657 ,  B60W2510/0685

Abstract: A method for operating an internal combustion engine. The method includes providing a piston engine. The piston engine includes a crankshaft and a torque sensor system. The torque sensor system includes at least one first rotary angle sensor and at least one second rotary angle sensor. The method further includes measuring a first and a second rotary angle in a spacing region and determining an angular offset between the first and the second rotary angle. The angular offset results from the torsion of the loaded crankshaft wherein the spacing region is limited along the crankshaft to an actual partial region of the spacing between the bearing journals. The partial region includes an actual subgroup of at least one of the number of offsets and the number of shaft journals, so that the angular offset is assigned to the actual subgroup.

公开(公告)号：US20240191670A1

公开(公告)日：2024-06-13

申请号：US18443759

申请日：2024-02-16

Applicant: Rolls-Royce Solutions GmbH

Inventor： Aron Toth

IPC: F02D41/22

CPC classification number: F02D41/22

Abstract: A method for monitoring an operation of an internal combustion engine includes the steps of: detecting, during the operation of the internal combustion engine, an acoustic signal, at least partially, during a closing process of a gas exchange valve of the internal combustion engine; evaluating, based on the acoustic signal which is detected, at least one functional state of the internal combustion engine; and selecting the at least one functional state of the internal combustion engine from a group consisting of a state of the gas exchange valve and a state of a structure-borne noise sensor used to detect the acoustic signal.

公开(公告)号：US20240084749A1

公开(公告)日：2024-03-14

申请号：US18516352

申请日：2023-11-21

Applicant: Rolls-Royce Solutions GmbH

Inventor： Aron Toth ,  Tobias Frank

IPC: F02D35/02 ,  F02D41/14 ,  F02D41/24 ,  F02D41/40

CPC classification number: F02D35/027 ,  F02D41/1406 ,  F02D41/247 ,  F02D41/403

Abstract: A method for operating an internal combustion engine: detecting a first signal from a knock sensor in a temporal measurement window for a first load point and for a first energization duration—assigned to a pre-injection—of an injector for an operating cycle; calculating a first first evaluation point from the first signal by a first metric; detecting a second signal from the knock sensor in the temporal measurement window for the first load point and for a second energization duration—assigned to the pre-injection—of the injector for the operating cycle; calculating by the first metric a second first evaluation point from the second signal; determining an optimum energization duration as an optimum of the first first evaluation point and the second first evaluation point; and storing and/or applying the optimum energization duration to the first load point and the first combustion chamber.

公开(公告)号：US12152545B2

公开(公告)日：2024-11-26

申请号：US18516352

申请日：2023-11-21

Applicant: Rolls-Royce Solutions GmbH

Inventor： Aron Toth ,  Tobias Frank

IPC: F02D35/02 ,  F02D41/14 ,  F02D41/24 ,  F02D41/40

Abstract: A method for operating an internal combustion engine: detecting a first signal from a knock sensor in a temporal measurement window for a first load point and for a first energization duration—assigned to a pre-injection—of an injector for an operating cycle; calculating a first first evaluation point from the first signal by a first metric; detecting a second signal from the knock sensor in the temporal measurement window for the first load point and for a second energization duration—assigned to the pre-injection—of the injector for the operating cycle; calculating by the first metric a second first evaluation point from the second signal; determining an optimum energization duration as an optimum of the first first evaluation point and the second first evaluation point; and storing and/or applying the optimum energization duration to the first load point and the first combustion chamber.

公开(公告)号：US20230193846A1

公开(公告)日：2023-06-22

申请号：US18109587

申请日：2023-02-14

Applicant: Rolls-Royce Solutions GmbH

Inventor： Jörg Remele ,  Aron Toth ,  Tobias Frank

IPC: F02D41/40

CPC classification number: F02D41/401 ,  F02D2200/0602 ,  F02D2041/389

Abstract: A method for operating an internal combustion engine, the method including the steps of:



(a) actuating an injector to introduce a pre-injection amount of a fuel into a combustion chamber of the internal combustion engine;
(b) determining, for an operating cycle of the combustion chamber in which the injector was actuated in the step (a), a pressure gradient characteristic value which is characteristic of a combustion chamber pressure gradient in the combustion chamber;
(c) repeating the steps (a) and (b) a plurality of times;
(d) determining a skew of a distribution of a plurality of pressure gradient characteristic values determined in the step (c); and
(e) changing or maintaining an actuation of the injector depending on the skew determined in the step (d).