公开(公告)号：US11001250B2

公开(公告)日：2021-05-11

申请号：US15909578

申请日：2018-03-01

Applicant: CUMMINS INC.

Inventor： Manik Narula ,  Timothy C. Ernst ,  Michael J. Ruth ,  Jonathan A. Dickson ,  J. Steven Kolhouse ,  Nimish Bagayatkar

IPC: B60K1/00 ,  B60W20/14 ,  B60W30/18 ,  B60K6/44 ,  B60K6/26 ,  F01N5/04

Abstract: A waste heat recovery (WHR) hybrid power system can be utilized in vehicles to convert heat energy into mechanical energy. The WHR system can include a WHR power unit structured to convert thermal energy into rotation of a WHR drive shaft. A motor/generator having a motor/generator shaft can selectively operate as a motor or a generator. A mechanical linkage can be structured to selectively link a output shaft to one of the WHR drive shaft and the motor/generator drive shaft independently of the other of the WHR drive shaft and the motor/generator drive shaft.

公开(公告)号：US20210017918A1

公开(公告)日：2021-01-21

申请号：US17030709

申请日：2020-09-24

Applicant: Cummins Inc.

Inventor： C. Larry Bruner ,  Phanindra V. Garimella ,  Geomy George ,  Timothy P. Lutz ,  J. Steven Kolhouse ,  Edmund P. Hodzen ,  Robert Charles Borregard ,  Mark A. Rosswurm ,  Axel Otto zur Loye

IPC: F02D19/08 ,  F02D41/22 ,  F02D19/06 ,  F02D35/02 ,  F02D19/10 ,  F02D41/00 ,  F02D41/14

Abstract: Systems, methods and apparatus for controlling operation of dual fuel engines are disclosed that regulate the fueling amounts provided by a first fuel and a second fuel during operation of the engine. The first fuel can be a liquid fuel and the second fuel can be a gaseous fuel. The fueling amounts are controlled to improve operational outcomes of the duel fuel engine.

公开(公告)号：US20210001703A1

公开(公告)日：2021-01-07

申请号：US16976213

申请日：2019-02-27

Applicant: CUMMINS INC.

Inventor： Manik Narula ,  Timothy C. Ernst ,  Michael J. Ruth ,  Jonathan A. Dickson ,  J. Steven Kolhouse ,  Nimish Bagayatkar

IPC: B60K6/32 ,  B60K6/46 ,  F02G5/00

Abstract: A vehicle system includes an engine, a transmission, a differential, and a waste heat recovery (WHR) drive that converts thermal energy into mechanical and electrical energy. The WHR drive can include a WHR power unit structured to convert thermal energy into rotation of a WHR drive shaft. A motor/generator having a motor/generator shaft can selectively operate as a motor or a generator. A mechanical linkage is structured to selectively link an output shaft to one of the WHR drive shaft and the motor/generator drive shaft independently of the other of the WHR drive shaft and the motor/generator drive shaft. The output shaft is selectively coupled to one of the engine, the transmission, or the differential. The vehicle system may also include a traction motor to provide drive to the vehicle. The output shaft can be selectively coupled to the traction motor or the engine.

公开(公告)号：US10815919B2

公开(公告)日：2020-10-27

申请号：US16144704

申请日：2018-09-27

Applicant: Cummins Inc.

Inventor： J. Steven Kolhouse ,  David J. Stroh

IPC: F02D35/02 ,  F02D41/00 ,  F02M26/47

Abstract: A system for controlling combustion misfire in an engine comprising a plurality of cylinders, at least a portion of the plurality of cylinders receiving recirculated exhaust gas, comprises a controller structured to detect a combustion misfire in at least one of the cylinders of the plurality of cylinders. The controller is configured to retard a spark timing of at least the portion of the plurality of cylinders after a time delay.

公开(公告)号：US10731259B2

公开(公告)日：2020-08-04

申请号：US15898047

申请日：2018-02-15

Applicant: CUMMINS INC.

Inventor： David E. Koeberlein ,  J. Steven Kolhouse ,  Michael Hays

IPC: F02B75/28 ,  F02F3/12 ,  C23C4/01 ,  C23C4/134 ,  C23C4/02 ,  C23C4/129 ,  C23C28/04 ,  C23C4/11 ,  F01B7/14 ,  F02F3/22

Abstract: A method of making a piston for an opposed-piston engine comprises providing a piston. The piston comprises a substantially cylindrical portion including a sidewall and a piston crown located at an end of the piston. The piston crown comprises an end surface structured to form a combustion chamber when disposed within a cylinder bore in cooperation with an end surface of a cooperating opposing piston. A bonding layer including a bonding material is deposited on the end surface of the piston crown using a high velocity oxy-fuel spray process. At least one thermal barrier layer comprising ceramic material is deposited above the bonding layer.

公开(公告)号：US10724467B2

公开(公告)日：2020-07-28

申请号：US15796302

申请日：2017-10-27

Applicant: CUMMINS INC.

Inventor： David E. Koeberlein ,  J. Steven Kolhouse

IPC: F02F3/14 ,  F02F3/00 ,  C23C28/04 ,  C23C28/00 ,  F02F3/04 ,  F02B75/28 ,  F02F3/26 ,  F02B23/06 ,  F01B7/14 ,  F01B7/02 ,  F02F3/22

Abstract: A piston for an opposed-piston engine has a thermal barrier coating on at least the piston crown. The piston, at least the piston crown, is made of titanium or a titanium alloy. The thermal barrier coating includes a bonding material and a ceramic material. The bonding material can be present in the thermal barrier coating at an interface of the thermal barrier coating and the bulk of the piston material. The ceramic material can be a high R-Value material. In particular, the piston with a thermal barrier coating can be an exhaust piston for an opposed-piston engine.

公开(公告)号：US20200102900A1

公开(公告)日：2020-04-02

申请号：US16144704

申请日：2018-09-27

Applicant: Cummins Inc.

Inventor： J. Steven Kolhouse ,  David J. Stroh

IPC: F02D41/00 ,  F02M26/47 ,  F02D35/02

Abstract: A system for controlling combustion misfire in an engine comprising a plurality of cylinders, at least a portion of the plurality of cylinders receiving recirculated exhaust gas, comprises a controller structured to detect a combustion misfire in at least one of the cylinders of the plurality of cylinders. The controller is configured to retard a spark timing of at least the portion of the plurality of cylinders after a time delay.

公开(公告)号：US20200072142A1

公开(公告)日：2020-03-05

申请号：US16675600

申请日：2019-11-06

Applicant: Cummins Inc.

Inventor： J. Steven Kolhouse ,  David J. Stroh ,  Daniel J. O'Connor

IPC: F02D41/00 ,  F02B75/20 ,  F02M26/42 ,  F02D41/14

Abstract: One embodiment is a system comprising an internal combustion engine having one or more non-dedicated cylinders and one or more dedicated EGR cylinders configured to provide EGR to the engine via an EGR loop, a first spark plug coupled to each of the one or more non-dedicated cylinders, and a second spark plug coupled to each of the one or more dedicated EGR cylinders, wherein the second spark plug has a physical or dimensional characteristic that is different from the first spark plug. In certain forms each of the non-dedicated cylinders has only one of a first type of spark plug and each of the dedicated EGR cylinders has only one of a second type of spark plug. One or more of the characteristics that may vary between the first and second types of spark plugs include spark gap, electrode diameter, heat range, and ion sensing capability.

公开(公告)号：US10570841B2

公开(公告)日：2020-02-25

申请号：US16047397

申请日：2018-07-27

Applicant: CUMMINS INC.

Inventor： J. Steven Kolhouse ,  Samuel C. Geckler ,  David J. Stroh ,  Ying Yuan

IPC: F02D41/02 ,  F02D41/00 ,  F01N3/021 ,  F01N9/00 ,  F02P5/04 ,  F02M26/43

Abstract: A internal combustion engine system includes a gasoline internal combustion engine having a set of donor cylinders and a set of non-donor cylinders. The donor cylinders provide a proportion of the exhaust gas to an exhaust gas recirculation system and the remainder of the exhaust gas to an exhaust gas aftertreatment system including a particulate filter. The non-donor cylinders also provide exhaust gas to exhaust gas aftertreatment system. An engine controller can determine whether the particulate filter needs regeneration, and in response, retard a spark timing of the non-donor cylinders by an amount that is different from an amount or retardation of the donor cylinders.

公开(公告)号：US10539086B2

公开(公告)日：2020-01-21

申请号：US15843621

申请日：2017-12-15

Applicant: Cummins Inc.

Inventor： Ashish Shankar Gupta ,  J. Steven Kolhouse

IPC: F02D41/06 ,  F02B19/12 ,  F02P5/15

Abstract: Apparatuses, methods, and systems for starting an internal combustion engine under cold start conditions are disclosed. A combustible mixture is supplied to a plurality of cylinders of the internal combustion engine, where a number of ignition devices are operably connected with less than all of the plurality of cylinders so that at least one of the plurality of cylinders does not include an ignition device. In one form, only one ignition device is included in a bank of cylinders. In response to a cold start condition, a spark by the plurality of ignition devices is generated to cause ignition of the combustible mixture and start the internal combustion engine. In response to a normal or non-cold starting condition, the internal combustion engine is started by compression ignition where none of the ignition devices generate a spark.