公开(公告)号：US20200263601A1

公开(公告)日：2020-08-20

申请号：US16865768

申请日：2020-05-04

Applicant: CUMMINS INC.

Inventor： Christopher R. Nelson ,  Timothy C. Ernst

IPC: F02B47/08 ,  F02M26/24 ,  F02M26/33 ,  F02G5/02 ,  F02G5/00

Abstract: A waste heat recovery (WHR) system and method for regulating exhaust gas recirculation (EGR) cooling is described. More particularly, a Rankine cycle WHR system and method is described, including an arrangement to improve the precision of EGR cooling for engine efficiency improvement and thermal management.

公开(公告)号：US10662823B2

公开(公告)日：2020-05-26

申请号：US14430796

申请日：2013-09-24

Applicant: Modine Manufacturing Company ,  Cummins Inc.

Inventor： Gregory Gerald Hughes ,  Michael J. Reinke ,  Tony Rousseau ,  Timothy C. Ernst ,  James Zigan ,  Christopher Nelson

IPC: B21D53/08 ,  F01K23/00 ,  F28D15/00 ,  F28F1/00 ,  F28D7/00 ,  F01K23/10 ,  F28D21/00 ,  F28F9/00 ,  F28F3/02 ,  F01K7/16 ,  F28D9/00 ,  F28F3/00 ,  F28F9/02

Abstract: A power generation system having a combustion engine with a Rankine bottoming cycle, the system including a first flow path for a process fluid and a second flow path for a working fluid, and a heat exchanger arranged along both the first and the second flow paths to transfer waste heat from the process fluid to the working fluid. The heat exchanger includes a first flow conduit being bounded by a first wall section and configured to convey the process fluid, a second flow conduit to convey the working fluid, the second flow conduit being bounded by a second wall section spaced apart from the first wall section to define a gap therebetween, and a thermally conductive structure arranged within the gap and joined to the first and second wall sections to transfer heat therebetween, the gap being fluidly isolated from both the process fluid and the working fluid.

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.

公开(公告)号：US20190242327A1

公开(公告)日：2019-08-08

申请号：US16333298

申请日：2017-09-07

Applicant: CUMMINS INC.

Inventor： Michael T. Stanley ,  Jason R. Griffin ,  Timothy C. Ernst

IPC: F02F1/40

CPC classification number: F02F1/40 ,  F02F1/242

Abstract: A system for cooling a cylinder head includes a cylinder head, a cylinder block, and a waste heat recovery system. The cylinder head includes a first water jacket and a second water jacket. The cylinder block is coupled to the cylinder head. The cylinder block includes a third water jacket. The first water jacket is coupled to a first cooling circuit. The second water jacket is coupled to a second cooling circuit. The third water jacket is coupled to a third cooling circuit. The waste heat recovery system is coupled to at least one of the first cooling circuit, the second cooling circuit, and the third cooling circuit.

公开(公告)号：US20150275701A1

公开(公告)日：2015-10-01

申请号：US14430796

申请日：2013-09-24

Applicant: MODINE MANUFACTURING COMPANY ,  CUMMINS INC.

Inventor： Gregory Gerald Hughes ,  Michael J. Reinke ,  Tony Rousseau ,  Timothy C. Ernst ,  James Zigan ,  Christopher Nelson

IPC: F01K23/10 ,  F01K7/16

Abstract: A power generation system having a combustion engine with a Rankine bottoming cycle, the system including a first flow path for a process fluid and a second flow path for a working fluid, and a heat exchanger arranged along both the first and the second flow paths to transfer waste heat from the process fluid to the working fluid. The heat exchanger includes a first flow conduit being bounded by a first wall section and configured to convey the process fluid, a second flow conduit to convey the working fluid, the second flow conduit being bounded by a second wall section spaced apart from the first wall section to define a gap therebetween, and a thermally conductive structure arranged within the gap and joined to the first and second wall sections to transfer heat therebetween, the gap being fluidly isolated from both the process fluid and the working fluid.

Abstract translation: 一种具有兰金底循环的内燃机的发电系统，该系统包括用于工作流体的第一流动路径和用于工作流体的第二流动路径，以及沿着第一和第二流动路径布置的热交换器， 将废热从工艺流体传输到工作流体。 所述热交换器包括第一流动导管，所述第一流动导管由第一壁部分限定并且构造成输送所述工艺流体;第二流动导管，用于输送所述工作流体;所述第二流动导管由第二壁部分限定，所述第二壁部分与所述第一壁间隔开 截面以限定它们之间的间隙;以及导热结构，其布置在所述间隙内并且连接到所述第一壁部分和所述第二壁部分以在其间传递热量，所述间隙与所述工艺流体和所述工作流体两者流体隔离。