公开(公告)号：US20190234362A1

公开(公告)日：2019-08-01

申请号：US16380727

申请日：2019-04-10

申请人： GE Global Sourcing LLC

发明人： Victor Manuel Salazar ,  Adam E. Klingbeil ,  Pradheepram Ottikkutti

IPC分类号： F02M61/10 ,  F02D41/26 ,  F02M51/06 ,  F02D41/14 ,  F02D41/20

CPC分类号： F02D41/20 ,  F02D41/1439 ,  F02D41/2096 ,  F02D41/26 ,  F02D2041/2024 ,  F02D2041/2079 ,  F02M45/086 ,  F02M51/0607 ,  F02M51/0653 ,  F02M61/10 ,  F02M61/182 ,  F02M2200/46

摘要： A fuel injector assembly in one embodiment includes a nozzle, at least one needle, and at least one actuator. The nozzle includes at least one cavity in fluid communication with nozzle openings. The at least one needle is movably disposed within the at least one cavity, and prevents flow through the nozzle openings in a closed position. The at least one actuator is configured to move the at least one needle within the cavity. The at least one actuator is configured to move the at least one needle to at least a first fuel delivery configuration and a second fuel delivery configuration. A first amount of fuel is delivered through the nozzle openings with the at least one needle in the first fuel delivery configuration, and a second amount of fuel is delivered through the nozzle openings with the at least one needle in the second fuel delivery configuration.

公开(公告)号：US20180179966A1

公开(公告)日：2018-06-28

申请号：US15845447

申请日：2017-12-18

申请人： Toyota Jidosha Kabushiki Kaisha

发明人： Takanobu Hosoya ,  Yasuyuki Irisawa ,  Hirofumi Kubota ,  Takashi Tsunooka

IPC分类号： F02D41/00 ,  F02B37/18 ,  F02D41/14

CPC分类号： F02D41/0007 ,  F02B37/183 ,  F02D41/1439 ,  F02D41/1454 ,  F02D41/1495 ,  F02D41/221 ,  Y02T10/144 ,  Y02T10/40

摘要： A control apparatus for an internal combustion engine includes a turbocharger, a bypass passage, a waste gate valve, a turbo bypass valve, an air-fuel ratio sensor and an electronic control unit. The air-fuel ratio sensor is provided in an exhaust passage downstream of a merging point at which the bypass passage merges with the exhaust passage. The electronic control unit is configured to, when a predetermined acceleration request is established and a required opening degree of the turbo bypass valve is larger than a predetermined reference opening degree, execute air-fuel ratio control for changing an air-fuel ratio of exhaust gas from the internal combustion engine for a predetermined first period, and close the waste gate valve based on a convergence status of detected air-fuel ratio fluctuations. The detected air-fuel ratio fluctuations are fluctuations in air-fuel ratio that is detected by the air-fuel ratio sensor resulting from the air-fuel ratio control.

公开(公告)号：US09995236B2

公开(公告)日：2018-06-12

申请号：US15218226

申请日：2016-07-25

申请人： GM Global Technology Operations LLC

发明人： Jonathan T. Shibata

IPC分类号： F02D41/30 ,  G05B11/42 ,  G05D7/06 ,  F02D41/14

CPC分类号： F02D41/30 ,  F02D41/1439 ,  F02D41/1441 ,  F02D41/1454 ,  F02D41/1456 ,  F02D41/1473 ,  F02D41/1482 ,  F02D41/1483 ,  F02D41/3005 ,  F02D2200/0614 ,  F02D2200/0618 ,  G05B11/42 ,  G05D7/0635

摘要： A delay module, based on a base request received for a first loop, sets a delayed base request for a second loop. A first period between the first and second loops corresponds to: a first delay period of an oxygen sensor; and a second delay period for exhaust to flow from a cylinder of an engine to the oxygen sensor. A closed loop module determines a closed loop correction for the second loop based on: the delayed base request for the second loop; a measurement from the oxygen sensor; the closed loop correction for the first loop; and the closed loop correction for a third loop. A second period between the second and third loops corresponds to the first delay period of the oxygen sensor. A summer module sets a final request for the second loop based on the base request plus the closed loop correction for the second loop.

公开(公告)号：US09903264B1

公开(公告)日：2018-02-27

申请号：US15296181

申请日：2016-10-18

申请人： Caterpillar Inc.

发明人： Mary Louise Yeager ,  Lucas Allen Burger ,  Andrew Loetz ,  Brett Zook

IPC分类号： F02B19/10 ,  F02D41/30 ,  F02B19/12 ,  F02B43/10 ,  F02D41/00 ,  F02D41/14

CPC分类号： F02B19/1085 ,  F02B19/12 ,  F02B43/10 ,  F02B2043/103 ,  F02D35/023 ,  F02D35/024 ,  F02D41/0027 ,  F02D41/1439 ,  F02D41/28 ,  F02D41/3094

摘要： A control system for an engine cylinder having a pre-chamber and a main chamber includes a pressure sensor being provided in the pre-chamber, and a processor coupled to the pressure sensor. The processor is configured to measure pre-chamber pressure using the pressure sensor, determine a peak pre-chamber pressure from the measured pre-chamber pressure, calculate an estimated main chamber pressure corresponding to the peak pre-chamber pressure from at least one cylinder condition at ignition, calculate a pressure ratio of the peak pre-chamber pressure to the estimated main chamber pressure, calculate a fuel parameter for at least one of the pre-chamber and main chamber from the pressure ratio to achieve a desired pressure ratio, and generate a control signal to provide fuel to at least one of the pre-chamber and main chamber in accordance with the fuel parameter.

公开(公告)号：US20180023499A1

公开(公告)日：2018-01-25

申请号：US15218226

申请日：2016-07-25

申请人： GM Global Technololgy Operations LLC

发明人： Jonathan T. SHIBATA

IPC分类号： F02D41/30 ,  G05D7/06 ,  F02D41/14 ,  G05B11/42

CPC分类号： F02D41/30 ,  F02D41/1439 ,  F02D41/1441 ,  F02D41/1454 ,  F02D41/1456 ,  F02D41/1473 ,  F02D41/1482 ,  F02D41/1483 ,  F02D41/3005 ,  F02D2200/0614 ,  F02D2200/0618 ,  G05B11/42 ,  G05D7/0635

摘要： A delay module, based on a base request received for a first loop, sets a delayed base request for a second loop. A first period between the first and second loops corresponds to: a first delay period of an oxygen sensor; and a second delay period for exhaust to flow from a cylinder of an engine to the oxygen sensor. A closed loop module determines a closed loop correction for the second loop based on: the delayed base request for the second loop; a measurement from the oxygen sensor; the closed loop correction for the first loop; and the closed loop correction for a third loop. A second period between the second and third loops corresponds to the first delay period of the oxygen sensor. A summer module sets a final request for the second loop based on the base request plus the closed loop correction for the second loop.

公开(公告)号：US09850840B2

公开(公告)日：2017-12-26

申请号：US14900792

申请日：2013-06-26

申请人： Hiroshi Miyamoto ,  Yuji Miyoshi ,  Yasushi Iwazaki ,  Toru Kidokoro ,  Keiichiro Aoki

发明人： Hiroshi Miyamoto ,  Yuji Miyoshi ,  Yasushi Iwazaki ,  Toru Kidokoro ,  Keiichiro Aoki

IPC分类号： F02D41/12 ,  F02D41/14 ,  F01N3/08 ,  F01N13/00

CPC分类号： F02D41/126 ,  F01N3/08 ,  F01N13/009 ,  F01N2560/025 ,  F01N2560/14 ,  F01N2900/0416 ,  F02D41/1439 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/1495

摘要： An electronic control unit (ECU) of an internal combustion engine, which includes an air-fuel ratio sensor arranged at a downstream side of an exhaust purification catalyst, is configured to judge if a state of the air-fuel ratio sensor is normal or abnormal based on the first characteristic of change of air-fuel ratio and, if a judgment cannot be made based on the first characteristic, the ECU is configured to judge if the state of the air-fuel ratio sensor is normal or abnormal based on a second characteristic of change of air-fuel ratio. As a result, it is possible to suppress the effects of the change of state of the exhaust purification catalyst while accurately diagnosing the abnormality of deterioration of response of a downstream side air-fuel ratio sensor.

公开(公告)号：US09845754B2

公开(公告)日：2017-12-19

申请号：US14578912

申请日：2014-12-22

申请人： Cummins Inc.

发明人： Carlos Alcides Lana ,  David J. Stroh ,  Samuel C. Geckler ,  Marten H. Dane ,  Anthony Kyle Perfetto ,  Karthik Kappaganthu ,  Govindarajan Kothandaraman

IPC分类号： F02M25/07 ,  F02D41/14 ,  F02P5/04 ,  F02D41/00 ,  F02P5/15 ,  F02D37/02 ,  F02M26/43 ,  F02M26/05 ,  F02D35/02 ,  F02M26/46

CPC分类号： F02D41/1439 ,  F02D35/02 ,  F02D35/021 ,  F02D35/023 ,  F02D35/027 ,  F02D37/02 ,  F02D41/0052 ,  F02D41/0055 ,  F02D41/0065 ,  F02D41/008 ,  F02D41/1448 ,  F02D41/1451 ,  F02D41/1452 ,  F02D41/1454 ,  F02D2041/1431 ,  F02D2041/147 ,  F02D2200/1015 ,  F02D2250/18 ,  F02M26/05 ,  F02M26/43 ,  F02M26/46 ,  F02P5/045 ,  F02P5/1516 ,  Y02T10/46 ,  Y02T10/47

摘要： A system includes an internal combustion engine having a number of cylinders, with at least one of the cylinder(s) being a primary EGR cylinder that is dedicated to provided EGR flow during at least some operating conditions. A controller is structured to control combustion conditions in the cylinders in response to one or more operating conditions associated with the engine.

公开(公告)号：US20170335763A1

公开(公告)日：2017-11-23

申请号：US15673656

申请日：2017-08-10

申请人： HUSQVARNA AB

发明人： Mikael Bergman

IPC分类号： F02B75/02 ,  F02B33/04 ,  F02D41/14 ,  F02D35/00 ,  F02B63/02 ,  F02B25/22 ,  F02B25/04 ,  F01N3/10

CPC分类号： F02B75/02 ,  F01N3/101 ,  F02B25/04 ,  F02B25/22 ,  F02B33/04 ,  F02B63/02 ,  F02B2075/025 ,  F02D35/0053 ,  F02D41/1439 ,  F02D41/1454 ,  F02D41/1488 ,  F02D2400/04 ,  F02D2400/06 ,  Y02T10/22

摘要： To meet stringent emission standards and improve performance of two-stroke crankcase-scavenged engines, the muffler (13) of the engine is provided with mixing means (130, 31) for mixing the exhaust gases (42) resulting from the mixture participating in combustion and gases resulting from scavenging, so that a substantially homogenous gaseous mixture is formed within the muffler (13), and means (81) for sensing oxygen concentration is located in the homogeneous gaseous mixture and are configured to provide an output value to a control unit (80) for controlling supply of fuel to the engine and thereby the air-fuel ratio in the combustion chamber (41). The muffler (13) suitably is provided with a catalytic element (140), preferably a three-way catalyst. The engine (1) preferably is a stratified charge engine.

公开(公告)号：US20170314496A1

公开(公告)日：2017-11-02

申请号：US15496317

申请日：2017-04-25

申请人： Toyota Jidosha Kabushiki Kaisha

发明人： Kazuya Suzuki ,  Koichi Hoshi

IPC分类号： F02D41/26 ,  F01N3/10 ,  F01N11/00 ,  F01N13/00

CPC分类号： F02D41/263 ,  F01N3/101 ,  F01N9/00 ,  F01N11/007 ,  F01N13/008 ,  F01N2430/06 ,  F01N2560/025 ,  F02D41/008 ,  F02D41/0295 ,  F02D41/1439 ,  F02D41/1454 ,  F02D41/1473 ,  Y02T10/22 ,  Y02T10/47

摘要： When the air fuel ratio dither control is carried out, an air fuel ratio of a mixture in each of one or more lean cylinders and one or more rich cylinders is controlled in a feedback manner based on an average value of a detected value of an air fuel ratio sensor, so that an average value of an air fuel ratio of exhaust gas flowing into the three-way catalyst becomes a predetermined target exhaust gas air fuel ratio. At this time, the air fuel ratio dither control is carried out, by setting at least a cylinder with the highest gas impingement intensity in a cylinder group of an internal combustion engine as the one or more lean cylinders.

公开(公告)号：US20170234255A1

公开(公告)日：2017-08-17

申请号：US15585227

申请日：2017-05-03

申请人： DENSO CORPORATION

发明人： Noriaki IWASE ,  Yasuo MUKAI

IPC分类号： F02D41/14 ,  F02D41/00

CPC分类号： F02D41/1454 ,  F02D41/008 ,  F02D41/0085 ,  F02D41/1439 ,  F02D41/1445 ,  F02D41/1488 ,  F02D41/1498 ,  F02D2200/1015 ,  G01M15/11

摘要： An individual cylinder air-fuel ratio estimation of estimating an air-fuel ratio of an individual cylinder is performed on a sensed value of an air-fuel ratio sensor set in an exhaust gas collection part of an engine, and an individual cylinder air-fuel ratio control of controlling the air-fuel ratio of the individual cylinder is performed in such a way that a variation in the air-fuel ratio between the cylinders becomes small on the basis of an estimated air-fuel ratio of the individual cylinder. Further, it is determined whether or not a misfire of the engine is caused and when it is determined that the misfire of the engine is caused, the individual cylinder air-fuel ratio estimation and the individual cylinder air-fuel ratio control are stopped and an individual cylinder correction value by the individual cylinder air-fuel ratio control is reset. In this way, it is possible to avoid the individual cylinder air-fuel ratio control from being performed continuously as usual in a state where the air-fuel ratio of the individual cylinder cannot be controlled correctly due to the effect of the misfire.