-
公开(公告)号：US20200232398A1
公开(公告)日：2020-07-23
申请号：US16254100
申请日：2019-01-22
Applicant: Caterpillar Inc.
Inventor： Shanmugahari Murugesan , Ethan V Ferguson , Abhishek Awana
Abstract: A method for controlling powertrain of a machine not having a torque converter output speed sensor during a direction change of the machine is provided. The method includes retrieving a first desired engine speed value and a second desired engine speed value based on a detection of the direction change by a control module. The second desired engine speed value is determined based on a current gear setting of a gear shift lever and a desired gear setting of the gear shift lever. The method further includes determining the desired engine speed value based on a comparison between the first desired engine speed value and the second desired engine speed value by the control module. The control module is configured to identify a lower value of the first desired engine speed value and the second desired engine speed value as the desired engine speed value.
-
公开(公告)号：US11566703B2
公开(公告)日：2023-01-31
申请号：US17181521
申请日：2021-02-22
Applicant: Caterpillar Inc.
Abstract: A method of controlling gear selection in a vehicle transmission comprises detecting a change in a direction control signal (DCS) from a neutral signal state. If the current TOS is less than or equal to a predetermined neutral shift threshold TOS, the transmission selects one of a plurality of first direction gears if the DCS was changed to a first direction signal state or one of a plurality of second direction gears if the DCS was changed to a second direction signal state. If the current TOS is greater than the predetermined neutral shift threshold TOS, the transmission selects one of the plurality of first direction gears if a machine motion direction parameter indicates that the vehicle is moving in the first direction or one of the plurality of second direction gears if the machine motion direction parameter indicates that the vehicle is moving in the second direction.
-
公开(公告)号：US20210262565A1
公开(公告)日：2021-08-26
申请号：US17181521
申请日：2021-02-22
Applicant: Caterpillar Inc.
Abstract: A method of controlling gear selection in a vehicle transmission comprises detecting a change in a direction control signal (DCS) from a neutral signal state. If the current TOS is less than or equal to a predetermined neutral shift threshold TOS, the transmission selects one of a plurality of first direction gears if the DCS was changed to a first direction signal state or one of a plurality of second direction gears if the DCS was changed to a second direction signal state. If the current TOS is greater than the predetermined neutral shift threshold TOS, the transmission selects one of the plurality of first direction gears if a machine motion direction parameter indicates that the vehicle is moving in the first direction or one of the plurality of second direction gears if the machine motion direction parameter indicates that the vehicle is moving in the second direction.
-
公开(公告)号：US10934950B2
公开(公告)日：2021-03-02
申请号：US16254100
申请日：2019-01-22
Applicant: Caterpillar Inc.
Inventor： Shanmugahari Murugesan , Ethan V Ferguson , Abhishek Awana
Abstract: A method for controlling powertrain of a machine not having a torque converter output speed sensor during a direction change of the machine is provided. The method includes retrieving a first desired engine speed value and a second desired engine speed value based on a detection of the direction change by a control module. The second desired engine speed value is determined based on a current gear setting of a gear shift lever and a desired gear setting of the gear shift lever. The method further includes determining the desired engine speed value based on a comparison between the first desired engine speed value and the second desired engine speed value by the control module. The control module is configured to identify a lower value of the first desired engine speed value and the second desired engine speed value as the desired engine speed value.
-
-
-
Search Results
4
records
(took 0.011 seconds)
