公开(公告)号：US20210300328A1

公开(公告)日：2021-09-30

申请号：US17229438

申请日：2021-04-13

Applicant: CUMMINS INC.

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

IPC: 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：US11078854B2

公开(公告)日：2021-08-03

申请号：US16990764

申请日：2020-08-11

Applicant: Cummins Inc.

Inventor： Aaron William Beinborn ,  J. Steven Kolhouse

IPC: F02D41/14 ,  F02D41/00 ,  F02D13/06

Abstract: A controller for a vehicle includes at least one processor and at least one memory storing instructions that, when executed by the processor, cause the controller to perform various operations. The operations include determining that the vehicle is in reverse and in response, initiating a cylinder deactivation mode for an engine of the vehicle.

公开(公告)号：US11067014B2

公开(公告)日：2021-07-20

申请号：US16036056

申请日：2018-07-16

Applicant: Cummins Inc.

Inventor： Marten H. Dane ,  J. Steven Kolhouse ,  Thomas M. Yonushonis ,  J. Stephen Wills ,  Samuel C. Geckler

IPC: F02D41/00 ,  F02B29/04 ,  F02D13/02 ,  F02M45/02 ,  F02M26/06 ,  F02M26/15 ,  F02M26/25 ,  F02M26/27 ,  F02M26/28 ,  F02M26/24 ,  F02M26/33 ,  F02D41/04 ,  F02D9/04 ,  F02D35/02

Abstract: A method includes operating a spark ignition engine and flowing low pressure exhaust gas recirculation (EGR) from an exhaust to an inlet of the spark ignition engine. The method includes interpreting a parameter affecting an operation of the spark ignition engine, and determining a knock index value in response to the parameter. The method further includes reducing a likelihood of engine knock in response to the knock index value exceeding a knock threshold value.

公开(公告)号：US20210189981A1

公开(公告)日：2021-06-24

申请号：US17194895

申请日：2021-03-08

Applicant: Cummins Inc.

Inventor： Aaron William Beinborn ,  Adrian P. Dale ,  Lyle E. Kocher ,  J. Steven Kolhouse

IPC: F02D41/00 ,  F02B37/24

Abstract: Systems, apparatus, and methods are disclosed that include an internal combustion engine having a plurality of cylinders operable to be deactivated while controlling a variable geometry turbocharger in response to the reduced number of active cylinders.

公开(公告)号：US10975786B2

公开(公告)日：2021-04-13

申请号：US16564308

申请日：2019-09-09

Applicant: Cummins Inc.

Inventor： Aaron William Beinborn ,  Adrian P. Dale ,  Lyle E. Kocher ,  J. Steven Kolhouse

IPC: F02D41/00 ,  F02B37/24

Abstract: Systems, apparatus, and methods are disclosed that include an internal combustion engine having a plurality of cylinders operable to be deactivated while controlling a variable geometry turbocharger in response to the reduced number of active cylinders.

公开(公告)号：US20210025298A1

公开(公告)日：2021-01-28

申请号：US16926997

申请日：2020-07-13

Applicant: CUMMINS INC.

Inventor： J. Steven Kolhouse ,  Lyle E. Kocher

IPC: F01M9/10 ,  F01M1/02 ,  F02N11/00 ,  F01L13/00 ,  F02D13/06 ,  F02D41/02

Abstract: A system includes a valve actuation system, a pre-lubrication pump coupled to a lubrication circuit and configured to provide oil to the valve actuation system, a catalyst for receiving and treating exhaust gasses, and a controller. The controller is configured to identify an engine start request and determine whether the catalyst temperature is below a first threshold value. In response to determining that the catalyst temperature is below the first threshold value, the controller actuates the pre-lubrication pump to direct lubricant to the valve actuation system, controls the valve actuation system to deactivate at least one cylinder of an engine, and, subsequent to deactivating the at least one cylinder of the engine, cranks the engine.

公开(公告)号：US10808670B2

公开(公告)日：2020-10-20

申请号：US16181769

申请日：2018-11-06

Applicant: Cummins Inc.

Inventor： Martin T. Books ,  Vivek A. Sujan ,  J. Steven Kolhouse ,  Robert E. Cochran ,  Eric A. Pyers

IPC: F02N11/08 ,  B60K6/26 ,  B60W20/10 ,  F02N11/04 ,  F02D41/06

Abstract: Apparatuses, systems, methods, and techniques relating to engine start/stop functionality are disclosed. Automatic engine start/stop controls can be disabled during engine operating conditions in which one or more combustion parameters indicate a lack of combustion stability in one or more cylinders of the engine. Engine start/stop controls are enabled when the one or more combustion parameters satisfy combustion parameter conditions indicating combustion stability in the one or more cylinders.

公开(公告)号：US20200156613A1

公开(公告)日：2020-05-21

申请号：US16689824

申请日：2019-11-20

Applicant: Cummins Inc.

Inventor： Adam C. Cecil ,  Adrian P. Dale ,  Anshul Shambav ,  Anthony K. Perfetto ,  David J. Stroh ,  J. Steven Kolhouse ,  Ryan E. Schultz ,  Samuel C. Geckler ,  Thomas M. Yonushonis

IPC: B60T17/22 ,  B60T8/17 ,  B60W30/18 ,  F01N13/10

Abstract: A system for diagnosing engine braking performance of an engine comprising a plurality of cylinders comprises an exhaust manifold pressure sensor configured to detect an exhaust manifold pressure corresponding to exhaust gas emitted from a plurality of cylinders. A controller is configured to determine an exhaust manifold pressure value corresponding to at least one cylinder of the plurality of cylinders that is being used for engine braking, from an exhaust manifold pressure sensor signal received from the exhaust manifold pressure sensor. The controller is also configured to determine an engine braking value based on the exhaust manifold pressure value.

公开(公告)号：US20190270442A1

公开(公告)日：2019-09-05

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

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：US10400652B2

公开(公告)日：2019-09-03

申请号：US15611469

申请日：2017-06-01

Applicant: Cummins Inc.

Inventor： Timothy C. Ernst ,  J. Steven Kolhouse ,  Bhanu Teja Krishnavajjala

IPC: F01N5/02 ,  F02M26/32 ,  F01N13/10 ,  F02G5/04 ,  F01P3/20 ,  F01P7/14

Abstract: A system includes an exhaust passage and a waste heat recovery system. The exhaust passage is structured to fluidly couple to an exhaust manifold of an engine, and to receive exhaust gas from the engine. The waste heat recovery system includes a working fluid circuit, a superheater, and an expander. The working fluid circuit includes a pump to circulate a working fluid through the working fluid circuit, including through the engine. Heat is transferred from the engine to the working fluid. The superheater is positioned along the working fluid circuit downstream of the engine. The superheater is fluidly coupled to the exhaust passage and transfers heat from the exhaust gas to the working fluid. The expander is positioned along the working fluid circuit downstream of the superheater. The expander generates useful energy from the heat transferred to the working fluid from the exhaust gas and the engine.