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1.发明申请公开(公告)号：US20190170247A1
公开(公告)日：2019-06-06
申请号：US15833089
申请日：2017-12-06
Applicant: CNH Industrial America LLC , Danfoss Power Solutions Inc.
Inventor： David J. Hafvenstein , Simon L. Nielsen
CPC classification number: F16H61/42 , A01C23/00 , A01M21/04 , B60Y2300/184 , F16H39/02 , F16H59/72 , F16H61/4192 , F16H61/47 , F16H2061/1216 , F16H2061/124
Abstract: A system, apparatus and method are provided for limiting operating speed at high temperatures of a self-propelled, agricultural product applicator having a hydraulic drive system including a pump supplying pressurized hydraulic fluid to a variable-displacement hydraulic motor operatively connected for propelling the applicator. A temperature sensor detects a temperature of the pressurized hydraulic fluid in the hydraulic system. A propel controller is operatively connected between the temperature sensor and the propulsion motor and configured for limiting displacement of the propulsion motor according to one or more predetermined de-rated conditions resulting in reduced motor speed, in accordance with a predetermined schedule, when predetermined motor de-rating activation temperature limits of the hydraulic fluid are detected by the temperature sensor. The controller is further configured for providing a de-rated condition warning signal prior to limiting displacement of the propulsion motor.
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Patent Agency Ranking
公开(公告)号：US20140372000A1
公开(公告)日：2014-12-18
申请号：US14301758
申请日：2014-06-11
Applicant: Danfoss Power Solutions Inc.
Inventor： Frank J. Rozycki , Simon L. Nielsen , Gary R. LaFayette
CPC classification number: F16H61/48 , F16H61/4017 , F16H61/4157 , F16H61/42 , F16H61/421 , F16H61/423 , F16H61/433
Abstract: A speed control system for a hydrostatic transmission includes an engine having a drive shaft connected to a hydraulic pump. At least one hydrostatic motor is connected to the pump in a closed circuit by a flow line. Connected to the motor via a system shaft is a vehicle system. A controller is connected to a plurality of sensors and a high pressure relief valve that is connected to the flow line between the pump and the motor. Based on information received from the sensors, the controller sets the pump and motor displacements to limit the pressure to a value that will not overspeed the engine and allow the system to automatically provide braking beyond the engine's capability. This may be accomplished through the use of various algorithms.
Abstract translation: 用于静液压变速器的速度控制系统包括具有连接到液压泵的驱动轴的发动机。 至少一个静液压马达通过流水线在闭合回路中连接到泵。 通过系统轴连接到电机是车辆系统。 控制器连接到多个传感器和连接到泵和电动机之间的流动管线的高压溢流阀。 根据从传感器接收到的信息，控制器设置泵和电机的位移，将压力限制在不超速发动机的值，并允许系统自动提供制动超出发动机的能力。 这可以通过使用各种算法来实现。
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公开(公告)号：US09512918B2
公开(公告)日：2016-12-06
申请号：US14301758
申请日：2014-06-11
Applicant: Danfoss Power Solutions Inc.
Inventor： Frank J. Rozycki , Simon L. Nielsen , Gary R. LaFayette
IPC: F16H61/4017 , F16H61/48 , F16H61/4157
CPC classification number: F16H61/48 , F16H61/4017 , F16H61/4157 , F16H61/42 , F16H61/421 , F16H61/423 , F16H61/433
Abstract: A speed control system for a hydrostatic transmission includes an engine having a drive shaft connected to a hydraulic pump. At least one hydrostatic motor is connected to the pump in a closed circuit by a flow line. Connected to the motor via a system shaft is a vehicle system. A controller is connected to a plurality of sensors and a high pressure relief valve that is connected to the flow line between the pump and the motor. Based on information received from the sensors, the controller sets the pump and motor displacements to limit the pressure to a value that will not overspeed the engine and allow the system to automatically provide braking beyond the engine's capability. This may be accomplished through the use of various algorithms.
Abstract translation: 用于静液压变速器的速度控制系统包括具有连接到液压泵的驱动轴的发动机。 至少一个静液压马达通过流水线在闭合回路中连接到泵。 通过系统轴连接到电机是车辆系统。 控制器连接到多个传感器和连接到泵和电动机之间的流动管线的高压溢流阀。 根据从传感器接收到的信息，控制器设置泵和电机的位移，将压力限制在不超速发动机的值，并允许系统自动提供制动超出发动机的能力。 这可以通过使用各种算法来实现。
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公开(公告)号：US09512917B2
公开(公告)日：2016-12-06
申请号：US14302115
申请日：2014-06-11
Applicant: DANFOSS POWER SOLUTIONS INC.
Inventor： Frank J. Rozycki , Simon L. Nielsen , Gary R. LaFayette
IPC: F16H61/4008 , F16H61/4157 , F16H61/42 , F16H61/4017 , F16H61/423 , F16H61/433 , F16H61/421
CPC classification number: F16H61/48 , F16H61/4017 , F16H61/4157 , F16H61/42 , F16H61/421 , F16H61/423 , F16H61/433
Abstract: A speed control system for a hydrostatic transmission includes an engine having a drive shaft connected to a hydraulic pump. At least one hydrostatic motor is connected to the pump in a closed circuit by a flow line. Connected to the motor via a system shaft is a vehicle system. A controller is connected to a plurality of sensors and a proportional high pressure relief valve that is connected to the flow line between the pump and the motor. Based on information received from the sensors, the controller sets the pressure relief valve to limit the pressure to a valve that will not over-speed the engine and allows the demands of the speed control system to be attained. This may be accomplished through the use of various algorithms.
Abstract translation: 用于静液压变速器的速度控制系统包括具有连接到液压泵的驱动轴的发动机。 至少一个静液压马达通过流水线在闭合回路中连接到泵。 通过系统轴连接到电机是车辆系统。 控制器连接到多个传感器和连接到泵和电动机之间的流动管线的比例高压溢流阀。 根据从传感器接收的信息，控制器设置减压阀，以将压力限制在不会超速发动机的阀门上，并允许实现速度控制系统的要求。 这可以通过使用各种算法来实现。
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公开(公告)号：US10393261B2
公开(公告)日：2019-08-27
申请号：US15833089
申请日：2017-12-06
Applicant: CNH Industrial America LLC , Danfoss Power Solutions Inc.
Inventor： David J. Hafvenstein , Simon L. Nielsen
Abstract: A system, apparatus and method are provided for limiting operating speed at high temperatures of a self-propelled, agricultural product applicator having a hydraulic drive system including a pump supplying pressurized hydraulic fluid to a variable-displacement hydraulic motor operatively connected for propelling the applicator. A temperature sensor detects a temperature of the pressurized hydraulic fluid in the hydraulic system. A propel controller is operatively connected between the temperature sensor and the propulsion motor and configured for limiting displacement of the propulsion motor according to one or more predetermined de-rated conditions resulting in reduced motor speed, in accordance with a predetermined schedule, when predetermined motor de-rating activation temperature limits of the hydraulic fluid are detected by the temperature sensor. The controller is further configured for providing a de-rated condition warning signal prior to limiting displacement of the propulsion motor.
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公开(公告)号：US20140372001A1
公开(公告)日：2014-12-18
申请号：US14302115
申请日：2014-06-11
Applicant: DANFOSS POWER SOLUTIONS INC.
Inventor： Frank J. Rozycki , Simon L. Nielsen , Gary R. LaFayette
IPC: F16H61/48
CPC classification number: F16H61/48 , F16H61/4017 , F16H61/4157 , F16H61/42 , F16H61/421 , F16H61/423 , F16H61/433
Abstract: A speed control system for a hydrostatic transmission includes an engine having a drive shaft connected to a hydraulic pump. At least one hydrostatic motor is connected to the pump in a closed circuit by a flow line. Connected to the motor via a system shaft is a vehicle system. A controller is connected to a plurality of sensors and a proportional high pressure relief valve that is connected to the flow line between the pump and the motor. Based on information received from the sensors, the controller sets the pressure relief valve to limit the pressure to a valve that will not over-speed the engine and allows the demands of the speed control system to be attained. This may be accomplished through the use of various algorithms.
Abstract translation: 用于静液压变速器的速度控制系统包括具有连接到液压泵的驱动轴的发动机。 至少一个静液压马达通过流水线在闭合回路中连接到泵。 通过系统轴连接到电机是车辆系统。 控制器连接到多个传感器和连接到泵和电动机之间的流动管线的比例高压溢流阀。 根据从传感器接收的信息，控制器设置减压阀，以将压力限制在不会超速发动机的阀门上，并允许实现速度控制系统的要求。 这可以通过使用各种算法来实现。
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