公开(公告)号：US11384699B2

公开(公告)日：2022-07-12

申请号：US16468909

申请日：2017-12-11

Applicant: Caterpillar Motoren GmbH & Co. KG

Inventor： Eike Joachim Sixel ,  Daniel Wester ,  Marius Wolfgramm ,  Robert Graumüller ,  Andre Schmidt

IPC: F02D37/02 ,  F02D13/02 ,  F02D35/02 ,  F02D41/40

Abstract: A method of operating a gaseous fuel internal combustion engine comprises performing at least one measurement relating to the combustion of a mixture of gaseous fuel and air in a combustion chamber of an associated cylinder in a combustion cycle. At least one combustion parameter, for example, a start of combustion, is determined based on the at least one measurement. When the combustion parameter differs from a desired combustion parameter, an ignition device associated with the cylinder is controlled based on the comparison in order to control the combustion in the current combustion cycle.

公开(公告)号：US10337460B2

公开(公告)日：2019-07-02

申请号：US15369314

申请日：2016-12-05

Applicant: Caterpillar Motoren GmbH & Co. KG

Inventor： Eike Joachim Sixel ,  Andreas Banck ,  Michael Sturm ,  Carsten Rickert

IPC: F02B23/00 ,  F02M23/06 ,  F02D23/00 ,  F02D33/02 ,  F02D41/10 ,  F02B21/00 ,  F02D19/02 ,  F02D19/10 ,  F02D21/10 ,  F02D41/00

Abstract: A method for operating an engine is disclosed. The method may include supplying air from a primary air supply unit to an intake conduit. The method may also include supplying air to the engine from the intake conduit. The method may further include selectively supplying air from a secondary air supply unit to the intake conduit. In addition, the method may include maintaining an air fuel ratio between a first threshold value and a second threshold value during an increase in engine load increase by controlling a supply of air from the secondary supply unit to the intake conduit.

公开(公告)号：US09644551B2

公开(公告)日：2017-05-09

申请号：US14753098

申请日：2015-06-29

Applicant: Caterpillar Motoren GmbH & Co. KG

Inventor： Hannes Marscheider ,  Eike Joachim Sixel ,  Daniel Wester ,  Thorsten Tuexen

IPC: F02D41/00 ,  F02D19/06 ,  F02D41/34 ,  F02M43/04 ,  F02M45/00 ,  F02M63/00

CPC classification number: F02D41/0027 ,  F02D19/0621 ,  F02D41/345 ,  F02M43/04 ,  F02M45/00 ,  F02M63/0012 ,  Y02T10/36

Abstract: A method for supplying fuel to an engine is disclosed. The method may include regulating a gas admission valve disposed between a gaseous fuel line and a cylinder intake port to reduce flow of gaseous fuel to the cylinder. The method may also include closing a shut-off valve disposed between a gaseous fuel reservoir and the gaseous fuel line to restrict flow of gaseous fuel from the gaseous fuel reservoir to the gaseous fuel line. Further, the method may include actuating an inert gas inlet valve disposed between an inert gas reservoir and the gaseous fuel line to supply inert gas to the gaseous fuel line and flush the gaseous fuel in the gaseous fuel line into the cylinder via the gas admission valve. Additionally, the method may include closing the inert gas inlet valve to restrict supply of inert gas to the gaseous fuel line.

公开(公告)号：US10215125B2

公开(公告)日：2019-02-26

申请号：US15403373

申请日：2017-01-11

Applicant: Caterpillar Motoren GmbH & Co. KG

Inventor： Eike Joachim Sixel ,  Andre Schmidt ,  Adam Stubbs ,  Kai Ruschmeyer ,  Christian Hoffmann

IPC: F02D41/30 ,  F02D41/12 ,  F02D17/02 ,  F02D41/00 ,  F02B75/18 ,  F02D41/06 ,  F02D41/08 ,  F02D13/06

Abstract: A process of controlling operation in a multi-cylinder engine either during start of operation or low-load conditions is disclosed. The process may include skipping a supply of fuel in a first set of cylinders of the multi-cylinder engine for a pre-defined number of multiple working cycles. The process may further include supplying fuel-air mixture to a second set of cylinders of the multi-cylinder engine for the pre-defined number of multiple working cycles. The process may also include executing combustion of the fuel-air mixture supplied to the second set of cylinders for the pre-defined number of multiple working cycles. In addition the process may include either changing a selection of cylinders included in the first set of cylinders and the second set of cylinders respectively, or switching the supply of fuel, after the pre-defined number of multiple working cycles, from the second set of cylinders to the first set of cylinders.

公开(公告)号：US10208683B2

公开(公告)日：2019-02-19

申请号：US14639978

申请日：2015-03-05

Applicant: Caterpillar Motoren GmbH & Co. KG

Inventor： Eike Joachim Sixel ,  Hannes Marscheider ,  Daniel Wester ,  Arvind Sivasubramanian ,  Travis Barnes ,  Chris Gallmeyer ,  Jedediah A. Frey ,  Andrew J. Neaville ,  Robert Calderwood

IPC: F02D19/02 ,  F02D41/22 ,  F02D41/24 ,  F02D19/06 ,  F02D41/00 ,  F02D37/02 ,  F02D41/20

Abstract: A method of evaluating operability of a gaseous fuel admission valve of an internal combustion engine is disclosed. The method includes operating the internal combustion engine on gaseous fuel by repeatedly actuating the gaseous fuel admission valve. The method further includes measuring a sequence of temporal developments of an electrical operation parameter respectively associated with an actuation of the gaseous fuel admission valve. The sequence includes a first temporal development to be evaluated and a plurality of temporal developments preceding the first temporal development. The method also includes evaluating operability of the gaseous fuel admission valve based on the first temporal development of the measured sequence and at least one of the plurality of preceding temporal developments of the measured sequence.

公开(公告)号：US10047688B2

公开(公告)日：2018-08-14

申请号：US15509697

申请日：2015-08-10

Applicant: Caterpillar Motoren GmbH & Co. KG

Inventor： Hauke Holst ,  Eike Joachim Sixel

IPC: F02D41/00 ,  F02B19/12 ,  F02B19/10 ,  F02D37/02

Abstract: A method for operating a spark ignited gaseous fuel internal combustion engine is disclosed. The engine may have at least one main combustion chamber and at least one ignition device configured to initiate an ignition event within an ignition region. The method may include supplying pressurized fuel to the ignition region at times between about 30° to about 0° crank angle before the ignition event is initiated by the ignition device for enriching the ignition region with fuel. The method may also include initiating an ignition event in the ignition region for combusting an enriched air/fuel mixture within the ignition region.

公开(公告)号：US20190338714A1

公开(公告)日：2019-11-07

申请号：US16468909

申请日：2017-12-11

Applicant: Caterpillar Motoren GmbH & Co. KG

Inventor： Eike Joachim Sixel ,  Daniel Wester ,  Marius Wolfgramm ,  Robert Graumüller ,  Andre Schmidt

IPC: F02D37/02 ,  F02D13/02 ,  F02D35/02 ,  F02D41/40

Abstract: A method of operating a gaseous fuel internal combustion engine comprises performing at least one measurement relating to the combustion of a mixture of gaseous fuel and air in a combustion chamber of an associated cylinder in a combustion cycle. At least one combustion parameter, for example, a start of combustion, is determined based on the at least one measurement. When the combustion parameter differs from a desired combustion parameter, an ignition device associated with the cylinder is controlled based on the comparison in order to control the combustion in the current combustion cycle.

公开(公告)号：US09845743B2

公开(公告)日：2017-12-19

申请号：US14852878

申请日：2015-09-14

Applicant: Caterpillar Motoren GmbH & Co. KG

Inventor： Hauke Holst ,  Hendrik Johannes Lange ,  Eike Joachim Sixel ,  Marius Wolfgramm ,  Arvind Sivasubramanian

IPC: F02D41/14 ,  F02P9/00 ,  F02D41/00 ,  F02D19/06 ,  F02D35/02 ,  F02D37/02

CPC classification number: F02D41/0027 ,  F02D19/0642 ,  F02D35/023 ,  F02D37/02 ,  F02D41/1475 ,  F02P9/002 ,  Y02T10/36

Abstract: A method for controlling an internal combustion engine operating on at least partly gaseous fuel is disclosed. The method may include providing a desired burn rate profile corresponding to a desired operation of the internal combustion engine. The method may further include selecting first operating parameters such that an operation of the internal combustion engine with a first gas composition produces a first burn rate profile that corresponds to the desired burn rate profile. The method may also include operating the internal combustion engine with the first operating parameters using a second gas composition. The method may include determining that the second burn rate profile differs from the desired burn rate profile. In addition, the method may include adjusting an operating parameter from among the first operating parameters of the internal combustion engine to approach the desired burn rate profile.

公开(公告)号：US09719447B2

公开(公告)日：2017-08-01

申请号：US14795910

申请日：2015-07-10

Applicant: Caterpillar Motoren GmbH & Co. KG

Inventor： Eike Joachim Sixel ,  Daniel Wester ,  Arvind Sivasubramanian ,  Adam Stubbs

IPC: F02D41/14 ,  F02D35/02 ,  F02D19/06 ,  F02D19/08 ,  F02P5/152 ,  F02D41/00 ,  F02B37/16 ,  F02B37/18 ,  F02D33/00 ,  F02D41/30 ,  F02P9/00

CPC classification number: F02D41/1487 ,  F02B37/16 ,  F02B37/183 ,  F02D19/0642 ,  F02D33/006 ,  F02D35/027 ,  F02D41/0007 ,  F02D41/0027 ,  F02D41/0052 ,  F02D41/0077 ,  F02D41/3005 ,  F02P5/1527 ,  F02P9/002 ,  Y02T10/144 ,  Y02T10/46

Abstract: A method for controlling an internal combustion engine is disclosed. The method may include receiving knock data corresponding to knock levels over a time period. The method may also include determining from the knock data whether the knock levels change over the time period. Further, the method may include determining that a variation in the gas composition of the gaseous fuel supplied to the internal combustion engine has occurred when the knock levels change over the time period. In addition, the method may include adjusting an operating condition of the internal combustion engine to adapt a knock susceptibility of the internal combustion engine to the varying gas composition.