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公开(公告)号：US11739665B2
公开(公告)日：2023-08-29
申请号：US17612646
申请日：2020-05-14
Applicant: CUMMINS INC.
Inventor： Timothy C. Ernst , James A. Zigan , Jared Carpenter Delahanty
CPC classification number: F01K23/065 , F02G5/02 , F01K23/10 , F02G2260/00
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：US20190264581A1
公开(公告)日：2019-08-29
申请号：US16409193
申请日：2019-05-10
Applicant: Cummins Inc.
Inventor： Christophe Tricaud , James A. Zigan
Abstract: An apparatus includes a pump circuit structured to receive pump data indicative of an operating characteristic of a pump feeding a fluid to a waste heat recovery (WHR) system; a flow circuit structured to receive valve position data indicative of a position of a valve downstream of the pump, estimate a flow rate of the fluid exiting the pump, and estimate the flow rate of the fluid exiting the valve; and a pressure circuit structured to receive pressure data indicative of the pressure of the fluid exiting the valve, estimate a change in pressure of the fluid across the WHR system, and determine a pressure of the fluid in a hot section of the WHR system based on the pressure of the fluid exiting the valve and the change in the pressure of the fluid across the WHR system.
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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.
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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：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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Patent Agency Ranking
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：US20170175586A1
公开(公告)日：2017-06-22
申请号：US14974497
申请日：2015-12-18
Applicant: Cummins, Inc.
Inventor： Christophe Tricaud , James A. Zigan
CPC classification number: F01K23/065 , F01K13/02 , F01K27/02
Abstract: An apparatus includes a pump circuit structured to receive pump data indicative of an operating characteristic of a pump feeding a fluid to a waste heat recovery (WHR) system; a flow circuit structured to receive valve position data indicative of a position of a valve downstream of the pump, estimate a flow rate of the fluid exiting the pump, and estimate the flow rate of the fluid exiting the valve; and a pressure circuit structured to receive pressure data indicative of the pressure of the fluid exiting the valve, estimate a change in pressure of the fluid across the WHR system, and determine a pressure of the fluid in a hot section of the WHR system based on the pressure of the fluid exiting the valve and the change in the pressure of the fluid across the WHR system.
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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：US20150159535A1
公开(公告)日：2015-06-11
申请号：US14102095
申请日：2013-12-10
Applicant: Cummins Inc.
Inventor： James A. Zigan , Andrew P. Perr , Timothy C. Ernst
IPC: F01N5/02
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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