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公开(公告)号：US20200103025A1
公开(公告)日：2020-04-02
申请号：US16145932
申请日：2018-09-28
摘要： A method for determining and controlling engine speeds of a work vehicle during gear shifts may include controlling an operation of an engine and/or a transmission of a work vehicle so as to maintain the work vehicle operating at a requested speed, and determining a measured gear ratio for the transmission as a gear shift is occurring from a first gear ratio to a second gear ratio. The method may also include calculating a desired engine speed during the gear shift as a function of the requested speed and either the measured gear ratio or the second gear ratio. In addition, when the measured gear ratio differs from the first gear ratio by a predetermined threshold amount, the method may include controlling the engine speed based on the desired engine speed for a remainder of the gear shift from the first gear ratio to the second gear ratio.
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公开(公告)号：US20190301599A1
公开(公告)日：2019-10-03
申请号：US15939055
申请日：2018-03-28
IPC分类号： F16H61/02 , F16H61/684 , B60K17/02
摘要： A transmission system for a work vehicle includes a transmission. The transmission includes one or more input shafts, one or more output shafts, and shafts disposed in-between. The transmission includes gear sets disposed on the shafts, wherein the gear sets include intermediate gear sets. The transmission includes clutches disposed along the shafts, wherein each of the clutches is configured to selectively couple a respective gear set of the gear sets corresponding to a respective power flow path of the transmission. The transmission also includes a forward coupler and a reverse coupler each disposed on one of the shafts. The transmission system also includes a controller configured to receive a signal indicative of a shuttle shift, and in response to receiving the signal, instruct the clutches to stop rotation of the intermediate gear sets and subsequently shuttle shift between forward and reverse directions.
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3.发明申请公开(公告)号：US20150032344A1
公开(公告)日：2015-01-29
申请号：US14377906
申请日：2013-01-23
发明人： Yanming Hou , Garth Harvey Bulgrien
CPC分类号： B60W10/11 , B60W10/06 , B60W30/143 , B60W30/19 , B60W2300/15 , B60W2710/0644 , F16H61/08 , F16H63/502
摘要： A method for operating a work vehicle in an automatic speed control mode is disclosed. The method may generally include receiving an input associated with a desired ground speed of the work vehicle, determining with a controller to implement a gear change and an erpm change in order to maintain the work vehicle at the desired ground speed, wherein the gear change includes a gear prep phase and a ratio change phase and controlling a timing parameter of at least one of the gear change or the erpm change such that the ratio change phase and the erpm change occur substantially simultaneously.
摘要翻译： 公开了一种以自动速度控制模式操作作业车辆的方法。 该方法通常可以包括接收与工作车辆的期望地面速度相关联的输入，通过控制器确定实现变速和变速，以便将作业车辆保持在期望的地面速度，其中变速包括 齿轮准备阶段和比例变化阶段，并且控制齿轮变化或磨损变化中的至少一个的定时参数，使得比率变化阶段和磨损变化基本上同时发生。
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公开(公告)号：US10816046B2
公开(公告)日：2020-10-27
申请号：US15236822
申请日：2016-08-15
IPC分类号： F16D48/06
摘要： A method of controlling an input clutch and an output clutch, wherein the input clutch couples to a power source, the output clutch couples to a load, and the input clutch couples to the output clutch via gears, includes controlling torque of the input clutch based on a torque of the output clutch or a lookup table that controls the torque of the output clutch. The method also includes adjusting the torque of the input clutch based on a slip speed of the input clutch and a slip speed of the output clutch.
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公开(公告)号：US10393230B2
公开(公告)日：2019-08-27
申请号：US15227708
申请日：2016-08-03
摘要： A transmission system for a work vehicle includes a transmission. The transmission includes a first shaft, a second shaft, an input shaft, an output shaft, and an input gear pair comprising a first input gear and a second input gear. The transmission includes a first input clutch configured to selectively couple the input shaft to the first shaft, and a second input clutch configured to selectively couple the input shaft to the second shaft via the input gear pair. The transmission includes an output gear pair comprising a first output gear and a second output gear, wherein the first output gear is coupled to the first shaft, or the second output gear is coupled to the output shaft. The transmission also includes a first output clutch configured to selectively couple the second output gear to the output shaft, and a second output clutch configured to selectively couple the second shaft to the output shaft. The transmission further includes a first module, wherein the first module includes a first module clutch and a first module gear pair having a first module gear and a second module gear, wherein the first module gear is coupled to the first shaft and the first module clutch is configured to selectively couple the second module gear to the second shaft, or the second module gear is coupled to the second shaft and the first module clutch is configured to selectively couple the first module gear to the first shaft.
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公开(公告)号：US10047807B2
公开(公告)日：2018-08-14
申请号：US15002128
申请日：2016-01-20
IPC分类号： F16D48/06
摘要： A method includes determining, via a processor, a speed ratio of a transmission system including a transmission based at least in part on an output speed of the transmission system and an input speed of the transmission system; determining, via the processor, a first torque percentage for a first clutch coupled to the transmission based at least in part on the speed ratio; determining, via the processor, a second torque percentage for a second clutch coupled to the transmission based at least in part on the speed ratio; outputting, via the processor, a signal indicative of a first torque command to a clutch assembly based at least in part on the first torque percentage; and outputting, via the processor, a signal indicative of a second torque command to the clutch assembly based at least in part on the second torque percentage.
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公开(公告)号：US11112005B2
公开(公告)日：2021-09-07
申请号：US15939055
申请日：2018-03-28
摘要： A transmission system for a work vehicle includes a transmission. The transmission includes one or more input shafts, one or more output shafts, and shafts disposed in-between. The transmission includes gear sets disposed on the shafts, wherein the gear sets include intermediate gear sets. The transmission includes clutches disposed along the shafts, wherein each of the clutches is configured to selectively couple a respective gear set of the gear sets corresponding to a respective power flow path of the transmission. The transmission also includes a forward coupler and a reverse coupler each disposed on one of the shafts. The transmission system also includes a controller configured to receive a signal indicative of a shuttle shift, and in response to receiving the signal, instruct the clutches to stop rotation of the intermediate gear sets and subsequently shuttle shift between forward and reverse directions.
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公开(公告)号：US10196066B2
公开(公告)日：2019-02-05
申请号：US15166332
申请日：2016-05-27
IPC分类号： B60W30/188 , F16H61/02 , F16H59/14 , B60W10/06 , B60W10/11 , A01B76/00 , F02D29/02 , F02D31/00 , F02D41/10 , F02D41/26 , B60K17/02 , B60K17/28 , F16D48/02 , F16D48/06 , A01B71/06 , B60K25/02 , F02D41/14 , F02D41/02
摘要： A system includes an engine, a transmission driven by the engine, and a controller. The controller is configured to receive a speed input, receive feedback indicative of a load of the engine at a current engine speed, compare the load to a predetermined load threshold at the current engine speed, determine an expected engine speed based at least on the current engine speed, a current gear ratio, and an expected gear ratio, determine an estimated engine power at the expected engine speed and a current engine power at the current engine speed, and command a gear downshift when the load is greater than or equal to the predetermined load threshold and when the estimated engine power is greater than the current engine power.
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公开(公告)号：US20170204918A1
公开(公告)日：2017-07-20
申请号：US15002128
申请日：2016-01-20
IPC分类号： F16D48/06
CPC分类号： F16D48/06 , F16D2500/102 , F16D2500/10412 , F16D2500/30412 , F16D2500/30421 , F16D2500/30806 , F16D2500/30814 , F16D2500/30822 , F16D2500/50284 , F16D2500/50287
摘要： A method includes determining, via a processor, a speed ratio of a transmission system including a transmission based at least in part on an output speed of the transmission system and an input speed of the transmission system; determining, via the processor, a first torque percentage for a first clutch coupled to the transmission based at least in part on the speed ratio; determining, via the processor, a second torque percentage for a second clutch coupled to the transmission based at least in part on the speed ratio; outputting, via the processor, a signal indicative of a first torque command to a clutch assembly based at least in part on the first torque percentage; and outputting, via the processor, a signal indicative of a second torque command to the clutch assembly based at least in part on the second torque percentage.
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10.发明申请System And Method for Controlling the Operation of a Work Vehicle Having a Power Shift Transmission and a Proportional Parking Brake 审中-公开用于控制具有动力换挡变速器和比例停车制动器的工作车辆的操作的系统和方法公开(公告)号：US20150329116A1
公开(公告)日：2015-11-19
申请号：US14649647
申请日：2013-09-13
发明人： Garth Harvey Bulgrien , Pawel Kuros , Peter J. Dix
CPC分类号： B60W10/11 , B60K2026/029 , B60W10/182 , B60W30/18018 , B60W30/18063 , B60W30/181 , B60W30/18181 , B60W2300/152 , B60W2540/10 , B60Y2200/221
摘要： In one aspect, a method for controlling the operation of a work vehicle including a power shift transmission is disclosed. The method may include receiving, with a controller, a speed command signal from an input device instructing the controller to reduce a vehicle speed of the work vehicle to zero, controlling at least one clutch of the power shift transmission in order to initially reduce the vehicle speed and proportionally applying a parking brake of the work vehicle to reduce the vehicle speed to zero.
摘要翻译： 一方面，公开了一种用于控制包括动力换挡变速器的作业车辆的操作的方法。 该方法可以包括用控制器接收来自输入装置的速度指令信号，指示控制器将作业车辆的车速降低到零，控制至少一个动力换档变速器的离合器，以便首先减少车辆 速度和比例地施加作业车辆的驻车制动器以将车速降低到零。
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