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公开(公告)号：US09091343B1
公开(公告)日：2015-07-28
申请号：US14154592
申请日：2014-01-14
Applicant: Caterpillar Inc.
Inventor： Joshua Callaway , Steven J. Juricak , Corwin E. Storer
CPC classification number: F16H61/66 , E02F9/2253 , F16H61/42 , F16H2059/663
Abstract: A system for driving a machine is provided. A user input device inputs a desired throttle setting for the machine. The system includes an infinitely variable transmission having a transmission ratio that is adjustable. At least one sensor determines an inclination of the machine relative to a reference plane. A controller is configured to determine and apply a variable rate limit upon change in the transmission ratio based on the inclination of the machine when the desired throttle setting is reduced more than a predetermined amount and to adjust the rate limit based on the difference between an actual engine speed and a desired engine speed.
Abstract translation: 提供了一种用于驱动机器的系统。 用户输入设备为机器输入所需的节气门设定。 该系统包括具有可调节的传动比的无级变速器。 至少一个传感器确定机器相对于参考平面的倾斜度。 控制器被配置为当期望的节气门设定减少到预定量以上时，基于机器的倾斜度来确定和应用变速比变化时的可变速率限制，并且基于实际的 发动机转速和所需的发动机转速。
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公开(公告)号：US09533661B1
公开(公告)日：2017-01-03
申请号：US14748832
申请日：2015-06-24
Applicant: Caterpillar Inc.
Inventor： Todd R. Farmer , Steven J. Juricak , Jason M. Buckmier , Joshua D. Callaway , Korby A. Koch , Brian F. Taggart
CPC classification number: B60T8/1701 , B60T1/062 , B60T7/042 , B60T7/085 , B60T8/171 , B60T13/662 , B60T13/686 , B60T17/221
Abstract: Systems and methods for simulating electro-hydraulic (EH) braking of a work machine using a combination of hydraulic braking and engine braking may include determining a commanded brake pressure requested by an operator, determining an available engine braking force, and comparing the available engine braking force to a maximum available bleed pressure that is available to reduce a hydraulic braking force. An engine braking output and a pressure reducing valve output pressure may be determined based on the available engine braking force and the maximum available bleed pressure. A pressure reducing valve may be actuated so that the hydraulic braking force is equal to the commanded brake pressure minus the pressure reducing valve output pressure, and a transmission may be actuated so that the engine applies an engine braking force equivalent to the engine braking output to brake the work machine.
Abstract translation: 用于模拟使用液压制动和发动机制动的组合的作业机械的电动液压（EH）制动的系统和方法可以包括确定操作者要求的指令制动压力，确定可用的发动机制动力，以及比较可用的发动机制动 强制达到可用于降低液压制动力的最大可用排放压力。 发动机制动输出和减压阀输出压力可以基于可用的发动机制动力和最大可用排放压力来确定。 可以致动减压阀，使得液压制动力等于指令的制动压力减去减压阀输出压力，并且可以致动变速器，使得发动机将与发动机制动输出相当的发动机制动力施加到 制动工作机。
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Patent Agency Ranking
公开(公告)号：US20250133976A1
公开(公告)日：2025-05-01
申请号：US18498476
申请日：2023-10-31
Applicant: Caterpillar Inc.
Inventor： Terry M. Smith, Jr. , Mathew C. Frana , Steven J. Juricak
Abstract: A machine system includes a machine having a work tool assembly coupled to a back machine end and including a linkage adjustable among raised, lowered, and middle linkage positions in a vertical operating range. A work tool coupled to the linkage has an angular orientation dependent upon the position of the linkage and is pivotable at a greater pivoting ratio to the raised linkage position and a reduced pivoting ratio to the lowered linkage position. The configuration enables maintaining the work tool at a desired service orientation in a ground-penetrating portion of the vertical operating range, whilst tucking the work tool at the raised linkage position to facilitate loading of the machine onto a trailer.
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公开(公告)号：US10774850B2
公开(公告)日：2020-09-15
申请号：US15957172
申请日：2018-04-19
Applicant: Caterpillar Inc.
Inventor： Steven J. Juricak , David J. Lomax , Paul A. Rousseau
Abstract: A hydraulic system for a machine includes a first pump, an implement pump, a control valve, and an auxiliary circuit. The first pump is configured to supply a first fluid flow to a first circuit, such as a steering circuit. The implement pump is configured to supply a second fluid flow to an implement circuit to actuate a primary implement function. The auxiliary circuit is configured to deliver fluid flow to actuate an auxiliary implement function. The auxiliary circuit is fluidly coupled to the implement circuit. The auxiliary circuit is also coupled to the first circuit by the control valve. The control valve is located downstream, in the direction of fluid flow, of the implement pump and the first pump. The control valve is configured to allow at least a portion of the first fluid flow to enter the auxiliary circuit and be delivered to the auxiliary implement function.
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公开(公告)号：US20190323525A1
公开(公告)日：2019-10-24
申请号：US15957172
申请日：2018-04-19
Applicant: CATERPILLAR INC.
Inventor： Steven J. Juricak , David J. Lomax , Paul A. Rousseau
Abstract: A hydraulic system for a machine includes a first pump, an implement pump, a control valve, and an auxiliary circuit. The first pump is configured to supply a first fluid flow to a first circuit, such as a steering circuit. The implement pump is configured to supply a second fluid flow to an implement circuit to actuate a primary implement function. The auxiliary circuit is configured to deliver fluid flow to actuate an auxiliary implement function. The auxiliary circuit is fluidly coupled to the implement circuit. The auxiliary circuit is also coupled to the first circuit by the control valve. The control valve is located downstream, in the direction of fluid flow, of the implement pump and the first pump. The control valve is configured to allow at least a portion of the first fluid flow to enter the auxiliary circuit and be delivered to the auxiliary implement function.
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公开(公告)号：US20160375880A1
公开(公告)日：2016-12-29
申请号：US14748832
申请日：2015-06-24
Applicant: Caterpillar Inc.
Inventor： Todd R. Farmer , Steven J. Juricak , Jason M. Buckmier , Joshua D. Callaway , Korby A. Koch , Brian F. Taggart
CPC classification number: B60T8/1701 , B60T1/062 , B60T7/042 , B60T7/085 , B60T8/171 , B60T13/662 , B60T13/686 , B60T17/221
Abstract: Systems and methods for simulating electro-hydraulic (EH) braking of a work machine using a combination of hydraulic braking and engine braking may include determining a commanded brake pressure requested by an operator, determining an available engine braking force, and comparing the available engine braking force to a maximum available bleed pressure that is available to reduce a hydraulic braking force. An engine braking output and a pressure reducing valve output pressure may be determined based on the available engine braking force and the maximum available bleed pressure. A pressure reducing valve may be actuated so that the hydraulic braking force is equal to the commanded brake pressure minus the pressure reducing valve output pressure, and a transmission may be actuated so that the engine applies an engine braking force equivalent to the engine braking output to brake the work machine.
Abstract translation: 用于模拟使用液压制动和发动机制动的组合的作业机械的电动液压（EH）制动的系统和方法可以包括确定操作者要求的指令制动压力，确定可用的发动机制动力，以及比较可用的发动机制动 强制达到可用于降低液压制动力的最大可用排放压力。 发动机制动输出和减压阀输出压力可以基于可用的发动机制动力和最大可用排放压力来确定。 可以致动减压阀，使得液压制动力等于指令的制动压力减去减压阀输出压力，并且可以致动变速器，使得发动机将与发动机制动输出相当的发动机制动力施加到 制动工作机。
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公开(公告)号：US20150198246A1
公开(公告)日：2015-07-16
申请号：US14154592
申请日：2014-01-14
Applicant: Caterpillar Inc.
Inventor： Joshua Callaway , Steven J. Juricak , Corwin E. Storer
IPC: F16H61/66
CPC classification number: F16H61/66 , E02F9/2253 , F16H61/42 , F16H2059/663
Abstract: A system for driving a machine is provided. A user input device inputs a desired throttle setting for the machine. The system includes an infinitely variable transmission having a transmission ratio that is adjustable. At least one sensor determines an inclination of the machine relative to a reference plane. A controller is configured to determine and apply a variable rate limit upon change in the transmission ratio based on the inclination of the machine when the desired throttle setting is reduced more than a predetermined amount and to adjust the rate limit based on the difference between an actual engine speed and a desired engine speed.
Abstract translation: 提供了一种用于驱动机器的系统。 用户输入设备为机器输入所需的节气门设定。 该系统包括具有可调节的传动比的无级变速器。 至少一个传感器确定机器相对于参考平面的倾斜度。 控制器被配置为当期望的节气门设定减少到预定量以上时，基于机器的倾斜度来确定和应用变速比变化时的可变速率限制，并且基于实际的 发动机转速和所需的发动机转速。
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