公开(公告)号：US12104976B1

公开(公告)日：2024-10-01

申请号：US18505459

申请日：2023-11-09

Applicant: Ford Global Technologies, LLC

Inventor： Luis Juarez ,  Adam Krach ,  Vaibhav Khanna ,  Michael Joseph Giunta ,  Peter Turpel

IPC: B60W10/10 ,  B60W10/06 ,  B60W50/02 ,  F02D13/02 ,  F16H57/04 ,  F16H59/36 ,  F16H59/72 ,  F16H59/78 ,  F16H61/12 ,  G01M13/02

CPC classification number: G01M13/02 ,  B60W10/06 ,  B60W10/10 ,  B60W50/0205 ,  F02D13/02 ,  F16H57/0415 ,  F16H59/36 ,  F16H59/72 ,  F16H59/78 ,  F16H61/12 ,  F16H2059/366 ,  F16H2061/1208 ,  F16H2061/1256

Abstract: Systems and methods for diagnosing operation of a transmission warm-up valve are presented. In one example, the transmission warm-up valve is commanded to an open position and an estimated transmission fluid temperature is compared to an actual transmission fluid temperature to determine whether or not the transmission warm-up valve is operating as commanded.

公开(公告)号：US20240309798A1

公开(公告)日：2024-09-19

申请号：US18182965

申请日：2023-03-13

Applicant: Ford Global Technologies, LLC

Inventor： Sitaram Rejeti ,  Adam Krach ,  Vaibhav Khanna ,  Luis Juarez

IPC: F01P11/16 ,  F01P7/16

CPC classification number: F01P11/16 ,  F01P7/165 ,  F01P2007/146 ,  F01P2025/32 ,  F01P2025/40 ,  F01P2037/02 ,  F01P2060/045

Abstract: Methods and systems are provided for diagnosing a stuck Active Transmission Warmup (ATWU) valve. In one example, a method for an ATWU valve monitoring routine of a vehicle comprises determining a temperature difference between an engine coolant temperature (ECT) and a transmission fluid temperature (TFT) over a duration before the ATWU valve is commanded from a closed position to an open position or from the open position to the closed position comparing a rate of change of the TFT before and after the ATWU valve is commanded to the open position or the closed position; and indicating a stuck ATWU valve based on at least one of the temperature difference, the TFT rate of change comparison, or a combination thereof, based on a calibration parameter.

公开(公告)号：US12180876B2

公开(公告)日：2024-12-31

申请号：US18182965

申请日：2023-03-13

Applicant: Ford Global Technologies, LLC

Inventor： Sitaram Rejeti ,  Adam Krach ,  Vaibhav Khanna ,  Luis Juarez

IPC: F01P11/06 ,  F01P7/16 ,  F01P11/16 ,  F01P7/14

Abstract: Methods and systems are provided for diagnosing a stuck Active Transmission Warmup (ATWU) valve. In one example, a method for an ATWU valve monitoring routine of a vehicle comprises determining a temperature difference between an engine coolant temperature (ECT) and a transmission fluid temperature (TFT) over a duration before the ATWU valve is commanded from a closed position to an open position or from the open position to the closed position comparing a rate of change of the TFT before and after the ATWU valve is commanded to the open position or the closed position; and indicating a stuck ATWU valve based on at least one of the temperature difference, the TFT rate of change comparison, or a combination thereof, based on a calibration parameter.