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    Waste heat recovery system
    2.
    发明授权
    Waste heat recovery system 有权

    公开(公告)号：US09845711B2

    公开(公告)日：2017-12-19

    申请号：US13902719

    申请日：2013-05-24

    Applicant: CUMMINS INC.

    Inventor： Timothy C. Ernst ,  James A. Zigan

    IPC: F01D15/12 ,  F04D29/00 ,  F01D25/18 ,  F04D29/12 ,  B01D19/02 ,  F01B31/10 ,  F01K9/00 ,  F01K25/04 ,  F01K25/06

    CPC classification number: F01K9/00 ,  F01K25/04 ,  F01K25/06

    Abstract: A waste heat recovery system includes a Rankine cycle (RC) circuit having a pump, a boiler, an energy converter, and a condenser fluidly coupled via conduits in that order, to provide additional work. The additional work is fed to an input of a gearbox assembly including a capacity for oil by mechanically coupling to the energy converter to a gear assembly. An interface is positioned between the RC circuit and the gearbox assembly to partially restrict movement of oil present in the gear assembly into the RC circuit and partially restrict movement of working fluid present in the RC circuit into the gear assembly. An oil return line is fluidly connected to at least one of the conduits fluidly coupling the RC components to one another and is operable to return to the gear assembly oil that has moved across the interface from the gear assembly to the RC circuit.

    Waste heat recovery with active coolant pressure control system
    8.
    发明授权
    Waste heat recovery with active coolant pressure control system 有权

    公开(公告)号：US10914228B2

    公开(公告)日：2021-02-09

    申请号：US15803933

    申请日：2017-11-06

    Applicant: Cummins Inc.

    Inventor： Timothy C. Ernst ,  James A. Zigan ,  John Scott Blackwell

    IPC: F01P9/02 ,  F01K23/10 ,  F01K23/06 ,  B60K11/04 ,  F01P3/20 ,  F01P7/16 ,  F01P11/18 ,  F01K11/02 ,  F01P3/02 ,  F01P7/14 ,  F01P11/12 ,  F02G5/02 ,  F01P5/10 ,  B60K11/02

    Abstract: A waste heat recovery (WHR) and coolant system with active coolant pressure control includes an engine cooling system, a WHR system, and a coolant pressure control system. A coolant heat exchanger positioned along each of the engine cooling and working fluid circuits, and is structured to transfer heat from the coolant fluid to the working fluid. The coolant pressure control system includes a pressure line operatively coupled to an air brake system and to the coolant tank. A valve is coupled to the pressure line upstream of the coolant tank. A coolant pressure controller is in operative communication with each of the valve, an air pressure sensor, and a coolant temperature sensor. The coolant pressure controller is structured to determine a target coolant pressure based on a coolant temperature and control a valve position of the valve so as to cause the air pressure to approach the target coolant pressure.

    SYSTEMS AND METHODS FOR EXPANDING FLOW IN A WASTE HEAT RECOVERY SYSTEM
    9.
    发明申请
    SYSTEMS AND METHODS FOR EXPANDING FLOW IN A WASTE HEAT RECOVERY SYSTEM 审中-公开

    公开(公告)号：US20200088068A1

    公开(公告)日：2020-03-19

    申请号：US16483949

    申请日：2017-02-10

    Applicant: CUMMINS INC.

    Inventor： Timothy C. Ernst ,  Christopher R. Nelson

    IPC: F01K23/06 ,  F01K23/10

    Abstract: A waste heat recovery system includes a first heat exchanger, a second heat exchanger, and an expander. The first heat exchanger receives working fluid from a first portion of a first loop and provides the working fluid to a second portion of the first loop. The second heat exchanger receives the working fluid from a first portion of a second loop and provides the working fluid to a second portion of the second loop. The expander provides the working fluid to a first portion of a common line. The expander includes a stator. The stator includes a first inlet and a second inlet. The common line provides the working fluid to both the first loop and the second loop upstream of the first portion of the first loop and upstream of the first portion of the second loop.

    WASTE HEAT RECOVERY VEHICLE COOLING OPTIMIZATION
    10.
    发明申请
    WASTE HEAT RECOVERY VEHICLE COOLING OPTIMIZATION 审中-公开

    公开(公告)号：US20190249589A1

    公开(公告)日：2019-08-15

    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 ,  F01P5/02 ,  F01P7/02

    CPC classification number: F01P1/06 ,  F01K7/18 ,  F01K7/38 ,  F01K23/065 ,  F01P5/02 ,  F01P7/02 ,  F02G5/02 ,  F25B27/02 ,  Y02A30/274 ,  Y02T10/166

    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 cool the working fluid.

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