公开(公告)号：US20190186415A1

公开(公告)日：2019-06-20

申请号：US15841952

申请日：2017-12-14

Applicant: Cummins Inc.

Inventor： Timothy C. Ernst ,  Christopher R. Nelson

IPC: F02G5/04 ,  F02G1/047 ,  F02M26/33 ,  F02M26/24

Abstract: Systems and methods are disclosed to recover waste heat from an engine fluid with a heat exchanger subsystem that includes a heat exchanger. The heat exchanger subsystem is thermally coupled to a working fluid and the engine fluid, so the waste heat from the engine fluid is transferred to the working fluid. The engine fluid is bypassed from the heat exchanger in response to a heat exchanger bypass condition.

公开(公告)号：US20170356321A1

公开(公告)日：2017-12-14

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 ,  F02G5/04 ,  F01P3/20 ,  F02M26/32 ,  F01N13/10 ,  F01P7/14

CPC classification number: F01N5/02 ,  F01N13/10 ,  F01P3/20 ,  F01P7/14 ,  F01P2007/146 ,  F02G5/04 ,  F02G2260/00 ,  F02M26/32 ,  Y02T10/16

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.

公开(公告)号：US12065959B2

公开(公告)日：2024-08-20

申请号：US17930838

申请日：2022-09-09

Applicant: Cummins Inc.

Inventor： Timothy C. Ernst ,  Daniel J. Mohr

IPC: F02B29/04 ,  F02B29/02 ,  F02M26/04 ,  F02M26/17

CPC classification number: F02B29/0418 ,  F02B29/02 ,  F02B29/0443 ,  F02M26/04 ,  F02M26/17

Abstract: Heating of the charge air in an intake is provided by a working fluid that is circulated through the intake to exchange heat with the charge air. The heated charge air can be used in response to a thermal management condition for an exhaust gas produced by operation of the internal combustion engine.

公开(公告)号：US11862779B2

公开(公告)日：2024-01-02

申请号：US17224523

申请日：2021-04-07

Applicant: Cummins Inc.

Inventor： Timothy C. Ernst ,  Jonathan A. Dickson ,  Manik Narula

IPC: H01M10/66 ,  H01M10/613 ,  H01M10/625 ,  H01M10/635 ,  H01M10/6568 ,  B60L58/26 ,  B60H1/00 ,  H05K7/20

CPC classification number: H01M10/66 ,  B60H1/00278 ,  B60H1/00392 ,  B60L58/26 ,  H01M10/613 ,  H01M10/625 ,  H01M10/635 ,  H01M10/6568 ,  H05K7/20263 ,  H05K7/20272 ,  H05K7/20927 ,  H01M2220/20

Abstract: A cooling system for an electrified vehicle includes a first cooling loop for circulating coolant for cooling at least one of power electronics and a motor/generator of the vehicle. The first coolant loop includes a heat exchanger for exchanging heat with the coolant in the first cooling loop. A second cooling loop is provided for circulating coolant for cooling a battery of the vehicle. The second cooling loop includes a coolant chiller connected to a refrigeration system of the vehicle for exchanging heat in the coolant received from the battery with the refrigeration system of the vehicle.

公开(公告)号：US11833902B2

公开(公告)日：2023-12-05

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

CPC classification number: 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：US11820359B2

公开(公告)日：2023-11-21

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

CPC classification number: B60W20/14 ,  B60K6/26 ,  B60K6/44 ,  B60W30/18127 ,  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：US20220316425A1

公开(公告)日：2022-10-06

申请号：US17481863

申请日：2021-09-22

Applicant: CUMMINS INC.

Inventor： Timothy C. Ernst ,  Jared Carpenter Delahanty ,  Nathan Thomas Honican

IPC: F02G5/04 ,  F01N5/02

Abstract: A waste heat recovery system comprising a thermal circuit. The thermal circuit includes a boiler and an expander fluidly coupled to the boiler. The thermal circuit further includes a power transfer system integrated to the expander. The power transfer system is configured to receive mechanical energy from the expander. The thermal circuit further includes an ejector fluidly coupled to the boiler and to the power transfer system. The ejector is configured to receive a motive flow of working fluid from the boiler. The ejector is further configured to receive a suction flow of working fluid from the power transfer system. The ejector is further configured to combine the motive flow of working fluid and the suction flow of working fluid.

公开(公告)号：US11187185B1

公开(公告)日：2021-11-30

申请号：US17222558

申请日：2021-04-05

Applicant: CUMMINS INC.

Inventor： Timothy C. Ernst ,  Jared Carpenter Delahanty ,  Nathan Thomas Honican

IPC: F02G5/04 ,  F01N5/02

Abstract: A waste heat recovery system comprising a thermal circuit. The thermal circuit includes a boiler and an expander fluidly coupled to the boiler. The thermal circuit further includes a power transfer system integrated to the expander. The power transfer system is configured to receive mechanical energy from the expander. The thermal circuit further includes an ejector fluidly coupled to the boiler and to the power transfer system. The ejector is configured to receive a motive flow of working fluid from the boiler. The ejector is further configured to receive a suction flow of working fluid from the power transfer system. The ejector is further configured to combine the motive flow of working fluid and the suction flow of working fluid.

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：US11125139B2

公开(公告)日：2021-09-21

申请号：US16342315

申请日：2017-10-19

Applicant: CUMMINS INC.

Inventor： Timothy C. Ernst ,  Christopher R. Nelson ,  Jared Carpenter Delahanty

IPC: F01P1/06 ,  F25B27/02 ,  F02G5/02 ,  F01K7/18 ,  F01K7/38 ,  F01K23/06 ,  F01P5/02 ,  F01P7/02

Abstract: An engine cooling system comprises an engine cooling circuit, comprising a first pump structured to circulate engine coolant fluid therethrough. A remote coolant radiator positioned along the engine cooling circuit downstream of the engine and outside of a vehicle cooling package area is structured to transfer heat from the engine coolant fluid to air. A coolant heat exchanger is positioned along the engine cooling circuit in parallel to the remote coolant radiator. A waste heat recovery system comprises a working fluid circuit comprising a second pump. The coolant heat exchanger is positioned along the working fluid circuit and is structured to transfer heat from the engine coolant fluid to the working fluid. An expander is structured to convert energy from the heat transferred to the working fluid from the engine cooling fluid to mechanical energy. A condenser positioned downstream of the expander is structured to cool the working fluid.