公开(公告)号：US11668228B2

公开(公告)日：2023-06-06

申请号：US17301948

申请日：2021-04-20

申请人： DEERE & COMPANY

发明人： Manoj T. Muttepawar ,  Nishant Kharche ,  Darren J. Cruchelow ,  Jason E. Haubenstricker ,  Scott N. Clark

IPC分类号： F01P5/00 ,  F01P5/04 ,  F04D27/00 ,  F01P7/06 ,  B60K11/06 ,  A01D69/00

CPC分类号： F01P5/043 ,  B60K11/06 ,  F01P7/06 ,  F04D27/00 ,  A01D69/00 ,  F01P2025/60

摘要： A fan control system for a variable pitch fan of a work vehicle includes a first sensor that measures a parameter of a cooling system and a blade pitch module that adjust a pitch of a plurality of blades of the variable pitch fan to generate airflow in a first direction. A reversing module selectively commands a fan reversal that includes instructing the blade pitch module to temporarily adjust the pitch of the plurality of blades to generate airflow in a second direction. A first timer module, in response to the reversing module commanding the fan reversal, resets and increments a first timer and compares the first timer to a first threshold. A first reversal prevention module, in response to the first timer being less than the first threshold, prevents the reversing module from commanding a fan reversal by indicating that a first type of fan reversal is not permitted.

公开(公告)号：US11988132B2

公开(公告)日：2024-05-21

申请号：US18328443

申请日：2023-06-02

申请人： DEERE & COMPANY

发明人： Manoj T. Muttepawar ,  Nishant Kharche ,  Darren J. Cruchelow ,  Jason E. Haubenstricker ,  Scott N. Clark

IPC分类号： F04D27/00 ,  B60K11/06 ,  F01P5/04 ,  F01P7/06 ,  F04D19/00 ,  A01D69/00

CPC分类号： F01P5/043 ,  B60K11/06 ,  F01P7/06 ,  F04D27/00 ,  A01D69/00 ,  F01P2025/60

摘要： A fan control system for a variable pitch fan of a work vehicle includes a blade pitch module that adjust a pitch of a plurality of blades of the variable pitch fan to generate airflow in a first direction. A reversing module selectively commands a fan reversal that includes instructing the blade pitch module to temporarily adjust the pitch of the plurality of blades to generate airflow in a second direction. A first timer module, in response to the reversing module commanding the fan reversal, resets and increments a first timer and compares the first timer to a first threshold. A first reversal prevention module, in response to the first timer being less than the first threshold, prevents the reversing module from commanding a fan reversal by indicating that a first type of fan reversal is not permitted.