公开(公告)号：US20140214289A1

公开(公告)日：2014-07-31

申请号：US13750406

申请日：2013-01-25

Applicant: CATERPILLAR INC.

Inventor： Steven Ott ,  Adam Nackers ,  Kevin Davis

IPC: B60W10/06

CPC classification number: B60W10/10 ,  B60W10/06 ,  B60W30/1843 ,  B60W2300/17 ,  B60W2510/0638 ,  B60W2510/0676 ,  B60W2510/1035 ,  B60W2510/105 ,  B60W2510/106 ,  F16H59/78 ,  Y10T477/619 ,  Y10T477/653

Abstract: A machine includes an engine and an engine cooling system, which is associated with and configured to remove heat from the engine. A transmission is connected to the engine and configured to transmit engine power from the engine to a driven load. The transmission controls an amount of engine power transmitted to the driven load in response to a transmission command signal. A controller associated with the engine and the transmission provides the transmission control signal. The controller is disposed to determine an engine operating condition, determine a transmission operating condition, and adjust the transmission command signal to reduce the amount of engine power transmitted to the driven load when the engine operating condition indicates that the engine cooling system removes insufficient heat from the engine.

Abstract translation: 机器包括发动机和发动机冷却系统，该发动机和发动机冷却系统与发动机相关联并被构造成从发动机中去除热量。 变速器连接到发动机并被配置成将发动机功率从发动机传递到被驱动的负载。 变速器响应于发送指令信号控制发送到被驱动负载的发动机功率的量。 与发动机和变速器相关联的控制器提供变速器控制信号。 控制器设置成确定发动机运行状况，确定变速器运行状态，并且当发动机运行状态指示发动机冷却系统从炉中释放不足的热量时，调整变速器命令信号以减少传递到从动负载的发动机功率的量 引擎。

公开(公告)号：US20140121058A1

公开(公告)日：2014-05-01

申请号：US13666577

申请日：2012-11-01

Applicant: CATERPILLAR INC.

Inventor： Adam Nackers ,  Kevin Davis

IPC: F16H61/66

CPC classification number: B60W30/18136 ,  B60W10/103 ,  B60W30/18072 ,  B60W2710/0677 ,  B60W2710/1022 ,  B60W2720/10 ,  B60Y2200/411 ,  F16H47/04 ,  Y10T477/623 ,  Y10T477/636

Abstract: A method controls the power-transmission in a machine having a continuously variable transmission (CVT) and a power source operatively coupled together in a powertrain. The method regulates operation of the CVT with a retarding power limit in order to limit the amount of retarding power transferable from the powertrain to the power source. The retarding power may be utilized to decelerate or decrease the speed of the machine. The method may register an operator input signal indicative of a deceleration event from a plurality of possible deceleration events. The deceleration event is compared to a lookup table to determine if the retarding power limit should be adjusted. The method may adjust the retarding power limit in accordance with the comparison.

Abstract translation: 一种方法控制具有无级变速器（CVT）和在动力系中可操作地耦合在一起的动力源的机器中的动力传递。 该方法调节具有延迟功率极限的CVT的操作，以便限制从动力系传递到电源的延迟动力的量。 延迟功率可用于减速或降低机器的速度。 该方法可以从多个可能的减速事件登记表示减速事件的操作者输入信号。 减速事件与查找表进行比较，以确定是否应调整延迟功率极限。 该方法可以根据比较来调节延迟功率极限。

公开(公告)号：US09002595B2

公开(公告)日：2015-04-07

申请号：US13666527

申请日：2012-11-01

Applicant: Caterpillar Inc.

Inventor： Kevin Davis ,  Adam Nackers ,  Michael Barngrover ,  Brian D. Kuras

IPC: F16H61/66 ,  F16H61/472 ,  B60W10/101 ,  B60W10/103 ,  B60W30/188 ,  F16H47/04

CPC classification number: B60W30/1882 ,  B60W10/103 ,  B60W2710/1038 ,  B60W2710/105 ,  B60Y2200/411 ,  F16H47/04 ,  Y10T477/60 ,  Y10T477/619

Abstract: A method regulates the torque output and/or speed output of a continuously variable transmission (CVT) in a manner that may simulate a clutch. The CVT may be incorporated in a machine and maybe operatively coupled to a power source and to a propulsion device. The method utilizes an unaltered torque-to-speed curve that relates the torque output to the speed output of the CVT. The method may receive an operator input signal indicating a desire to change operation of the machine. The torque-to-speed curve may be shifted in response to the operator input signal to limit the torque output available. In an aspect, an under-run curve may be applied to the torque-to-speed curve, the under-run curve corresponding to a target speed. The operator input signal may also shift the under-run curve to reduce the target speed.

Abstract translation: 一种方法以可模拟离合器的方式调节无级变速器（CVT）的扭矩输出和/或速度输出。 CVT可以结合在机器中并且可以可操作地耦合到电源和推进装置。 该方法利用将转矩输出与CVT的速度输出相关联的未改变的转矩 - 转速曲线。 该方法可以接收指示改变机器操作的期望的操作者输入信号。 扭矩到速度曲线可以响应于操作者输入信号而偏移以限制可用的扭矩输出。 在一个方面，运行中的曲线可以应用于转矩 - 速度曲线，对应于目标速度的欠运行曲线。 操作员输入信号也可以移动欠运行曲线以降低目标速度。

公开(公告)号：US20140121917A1

公开(公告)日：2014-05-01

申请号：US13666673

申请日：2012-11-01

Applicant: CATERPILLAR INC.

Inventor： Kevin Davis ,  Adam Nackers ,  Steven Ott

IPC: B60W10/101

CPC classification number: B60W30/19 ,  B60W10/06 ,  B60W10/103 ,  B60W2540/16 ,  B60W2540/165 ,  B60W2710/0644 ,  B60W2710/1005 ,  B60Y2200/411 ,  F16H47/04 ,  F16H61/462

Abstract: A machine may include a continuously variable transmission (CVT) operatively coupled to a power source. A virtual gear ratio may be selected from a plurality of virtual gear ratios associated with the CVT. A power source speed may be locked between a minimum power source limit and a maximum power source limit that are associated with the selected virtual gear ratio. If the virtual gear ratio is changed, a controller including one or more control maps may compare the power source speed as locked to the minimum power source limit and the maximum power source limit as they relate to the newly selected virtual gear ratio. If power source speed is outside the minimum or maximum power source limits, the method may limit the power source speed. In some embodiments, the minimum and/or maximum power source limits may vary with respect to the plurality of virtual gear ratios.

Abstract translation: 机器可以包括可操作地耦合到电源的无级变速器（CVT）。 可以从与CVT相关联的多个虚拟齿轮比中选择虚拟齿轮比。 可以将电源速度锁定在与所选虚拟齿轮比相关联的最小电源限制和最大电源极限之间。 如果虚拟齿轮比改变，则包括一个或多个控制图的控制器可以将与锁定的电源速度比较为与新选择的虚拟齿轮比相关的最小电源极限和最大电源极限。 如果电源速度超出最小或最大电源限制，则该方法可能会限制电源速度。 在一些实施例中，最小和/或最大功率源极限可以相对于多个虚拟齿轮比而变化。

公开(公告)号：US20140121911A1

公开(公告)日：2014-05-01

申请号：US13666527

申请日：2012-11-01

Applicant: CATERPILLAR INC.

Inventor： Kevin Davis ,  Adam Nackers

IPC: F16H61/66

CPC classification number: B60W30/1882 ,  B60W10/103 ,  B60W2710/1038 ,  B60W2710/105 ,  B60Y2200/411 ,  F16H47/04 ,  Y10T477/60 ,  Y10T477/619

Abstract: A method regulates the torque output and/or speed output of a continuously variable transmission (CVT) in a manner that may simulate a clutch. The CVT may be incorporated in a machine and maybe operatively coupled to a power source and to a propulsion device. The method utilizes an unaltered torque-to-speed curve that relates the torque output to the speed output of the CVT. The method may receive an operator input signal indicating a desire to change operation of the machine. The torque-to-speed curve may be shifted in response to the operator input signal to limit the torque output available. In an aspect, an under-run curve may be applied to the torque-to-speed curve, the under-run curve corresponding to a target speed. The operator input signal may also shift the under-run curve to reduce the target speed.

Abstract translation: 一种方法以可模拟离合器的方式调节无级变速器（CVT）的扭矩输出和/或速度输出。 CVT可以结合在机器中并且可以可操作地耦合到电源和推进装置。 该方法利用将转矩输出与CVT的速度输出相关联的未改变的转矩 - 转速曲线。 该方法可以接收指示改变机器操作的期望的操作者输入信号。 扭矩到速度曲线可以响应于操作者输入信号而偏移以限制可用的扭矩输出。 在一个方面，运行中的曲线可以应用于转矩 - 速度曲线，对应于目标速度的欠运行曲线。 操作员输入信号也可以移动欠运行曲线以降低目标速度。