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公开(公告)号：US20190010893A1
公开(公告)日：2019-01-10
申请号：US16025485
申请日：2018-07-02
Applicant: Cummins Inc.
Inventor： Timothy C. Ernst
Abstract: A waste heat recovery system comprises an exhaust system, a thermal oil circuit, and a Rankine cycle circuit. The exhaust system is configured to provide exhaust gases. The thermal oil circuit comprises a first heat exchanger and a second heat exchanger. The first heat exchanger is positioned along the exhaust system. The first heat exchanger receives heat from exhaust gases and separately receives thermal oil such that heat from exhaust gases is transferred to thermal oil within the first heat exchanger. The second heat exchanger receives thermal oil from the first heat exchanger and provides thermal oil to the first heat exchanger. The Rankine cycle circuit circulates working fluid through the second heat exchanger separate from thermal oil such that heat from thermal oil is transferred to working fluid within the second heat exchanger. An expander utilizes heat within working fluid to produce mechanical energy.
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公开(公告)号：US20170335745A1
公开(公告)日：2017-11-23
申请号：US15521962
申请日：2015-10-27
Applicant: CUMMINS INC.
Inventor： Jithin Benjamin , Timothy C. Ernst , James A. Zigan , Kevin C. Augustin , David E. Koeberlein , Nimish Bagayatkar
CPC classification number: F01P3/18 , F01K9/003 , F01K23/065 , F01P3/20 , F01P5/12 , F01P2005/105 , F01P2005/125 , F01P2060/14 , F02G5/04
Abstract: Integrated cooling systems including a frame configured for mounting to a vehicle chassis in a path of ram air entering an engine compartment of a vehicle, a radiator connected to the frame in the ram air path, a waste heat recovery (WHR) condenser, a recouperator connected to the frame above a ram air path and coupled to the WHR condenser, and a coolant boiler connected to the frame below the ram air path and coupled to the radiator and recouperator are disclosed. Cooling systems configured for use in a WHR system, including an inlet header fixedly disposed on a first end of a condenser, the inlet header fluidly coupled to a heat exchanger to receive the working fluid, and a receiver fixedly disposed on a second end of the condenser opposite the first end, the receiver configured to receive the working fluid from the condenser are also disclosed.
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公开(公告)号：US20240084727A1
公开(公告)日：2024-03-14
申请号：US17930838
申请日：2022-09-09
Applicant: Cummins Inc.
Inventor： Timothy C. Ernst , Daniel J. Mohr
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.
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公开(公告)号：US20220228513A1
公开(公告)日：2022-07-21
申请号：US17612646
申请日：2020-05-14
Applicant: CUMMINS INC.
Inventor： Timothy C. Ernst , James A. Zigan , Jared Carpenter Delahanty
Abstract: A waste heat recovery (WHR) system that can be utilized in internal combustion engine systems includes at least two circuits, one having a low pressure working fluid and another having a high pressure working fluid. Each circuit can include heat exchangers to allow the working fluid to absorb heat form one or more heat source fluids associated with the engine. The system can also include an expander configured to receive the working fluid from the at least two circuits, and generating mechanical power. The system also can include a condenser, a sub cooler, and at least one working fluid pump to pump the working fluid in the at least two circuits. The cooling system also includes a controller that can receive temperature and pressure values from various locations in the WHR system and control at least the flow rates of the working fluids in the at least two circuits.
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公开(公告)号：US11008972B2
公开(公告)日：2021-05-18
申请号：US16333298
申请日：2017-09-07
Applicant: CUMMINS INC.
Inventor： Michael T. Stanley , Jason R. Griffin , Timothy C. Ernst
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.
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Patent Agency Ranking
公开(公告)号：US10900383B2
公开(公告)日：2021-01-26
申请号：US16483949
申请日：2017-02-10
Applicant: CUMMINS INC.
Inventor： Timothy C. Ernst , Christopher R. Nelson
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.
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公开(公告)号：US10605149B2
公开(公告)日：2020-03-31
申请号：US15521962
申请日：2015-10-27
Applicant: CUMMINS INC.
Inventor： Jithin Benjamin , Timothy C. Ernst , James A. Zigan , Kevin C. Augustin, Sr. , David E. Koeberlein , Nimish Bagayatkar
Abstract: Integrated cooling systems including a frame configured for mounting to a vehicle chassis in a path of ram air entering an engine compartment of a vehicle, a radiator connected to the frame in the ram air path, a waste heat recovery (WHR) condenser, a recouperator connected to the frame above a ram air path and coupled to the WHR condenser, and a coolant boiler connected to the frame below the ram air path and coupled to the radiator and recouperator are disclosed. Cooling systems configured for use in a WHR system, including an inlet header fixedly disposed on a first end of a condenser, the inlet header fluidly coupled to a heat exchanger to receive the working fluid, and a receiver fixedly disposed on a second end of the condenser opposite the first end, the receiver configured to receive the working fluid from the condenser are also disclosed.
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公开(公告)号：US20180135503A1
公开(公告)日：2018-05-17
申请号：US15803933
申请日：2017-11-06
Applicant: Cummins Inc.
Inventor： Timothy C. Ernst , James A. Zigan , John Scott Blackwell
CPC classification number: F01P9/02 , B60K11/02 , B60K11/04 , F01K11/02 , F01K23/065 , F01K23/10 , F01K23/101 , F01P3/02 , F01P3/20 , F01P7/14 , F01P7/165 , F01P11/12 , F01P11/18 , F01P2005/105 , F01P2025/04 , F01P2025/08 , F01P2025/32 , F01P2025/62 , F01P2025/66 , F01P2060/045 , F01P2060/14 , F01P2060/16 , F02G5/02 , Y02T10/16
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.
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公开(公告)号：US09556778B2
公开(公告)日：2017-01-31
申请号：US14102095
申请日：2013-12-10
Applicant: Cummins Inc.
Inventor： James A. Zigan , Andrew P. Perr , Timothy C. Ernst
CPC classification number: F01N5/02 , F01K23/065 , F01K23/101 , F02G5/02 , Y02T10/16 , Y02T10/166
Abstract: An engine including a WHR system includes a clutch positioned to engage or disengage a WHR feedpump that moves working fluid through a WHR circuit. The clutch engages or disengages the feedpump under certain operating conditions of the engine and/or the WHR system, and/or at the request of an operator of the engine. Conditions may include cool or cold components, and insufficient working fluid. The operator may also request the clutch be disengaged, such as might be advantageous if the operator detects an operational problem with the WHR system or determines there is an advantage to operating the engine without the WHR system.
Abstract translation: 包括WHR系统的发动机包括离合器，其定位成接合或分离通过WHR回路移动工作流体的WHR进料泵。 在发动机和/或WHR系统的某些操作条件下，和/或应发动机的操作者的要求，离合器接合或分离进料泵。 条件可能包括冷或冷组分，以及工作流体不足。 操作员还可以请求离合器脱离，例如如果操作者检测到WHR系统的操作问题或者确定在没有WHR系统的情况下操作发动机的优点是有利的。
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公开(公告)号：US09140209B2
公开(公告)日：2015-09-22
申请号：US13679885
申请日：2012-11-16
Applicant: CUMMINS INC. , PACCAR, INC.
Inventor： Timothy C. Ernst , Christopher R. Nelson
CPC classification number: F02G5/04 , F01N5/02 , F02M26/00 , Y02T10/121 , Y02T10/166
Abstract: A waste heat recovery (WHR) system connects a working fluid to fluid passages formed in an engine block and/or a cylinder head of an internal combustion engine, forming an engine heat exchanger. The fluid passages are formed near high temperature areas of the engine, subjecting the working fluid to sufficient heat energy to vaporize the working fluid while the working fluid advantageously cools the engine block and/or cylinder head, improving fuel efficiency. The location of the engine heat exchanger downstream from an EGR boiler and upstream from an exhaust heat exchanger provides an optimal position of the engine heat exchanger with respect to the thermodynamic cycle of the WHR system, giving priority to cooling of EGR gas. The configuration of valves in the WHR system provides the ability to select a plurality of parallel flow paths for optimal operation.
Abstract translation: 废热回收（WHR）系统将工作流体连接到形成在内燃机的发动机缸体和/或气缸盖中的流体通道，形成发动机热交换器。 流体通道在发动机的高温区域附近形成，使工作流体具有足够的热能以蒸发工作流体，同时工作流体有利地冷却发动机缸体和/或气缸盖，从而提高燃料效率。 发动机热交换器在EGR锅炉下游和排气热交换器上游的位置提供发动机热交换器相对于WHR系统的热力循环的最佳位置，优先考虑EGR气体的冷却。 WHR系统中的阀的配置提供了选择多个并行流动路径以获得最佳操作的能力。
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