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

IPC: B60T8/17 ,  B60T13/68 ,  B60T8/171

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。

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

IPC: G06F7/70 ,  B60T8/17 ,  B60T8/171 ,  B60T13/68

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。