- Patent Title: Methods and systems for a two-speed accessory drive of an engine
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Application No.: US17147156Application Date: 2021-01-12
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Publication No.: US11623633B2Publication Date: 2023-04-11
- Inventor: Timothy Vaughn , David Ord , George Papaioannou , Joseph Lyle Thomas , John Brevick
- Applicant: Ford Global Technologies, LLC
- Applicant Address: US MI Dearborn
- Assignee: Ford Global Technologies, LLC
- Current Assignee: Ford Global Technologies, LLC
- Current Assignee Address: US MI Dearborn
- Agency: McCoy Russell LLP
- Agent Vincent Mastrogiacomo
- Main IPC: B60W10/08
- IPC: B60W10/08 ; B60W20/13 ; B60W10/02 ; B60W10/115 ; B60W10/06 ; B60W20/40 ; B60W20/30

Abstract:
Methods and systems are provided for engaging and disengaging an electromagnetic clutch of a two-speed accessory drive of an engine of a vehicle. In one example, a method comprises, responsive to an electrical demand being higher than a threshold electrical demand, operating an electric machine of the vehicle in a motor mode to reduce a speed of a grounding gear of a planetary gear set of a two-speed accessory drive (TSAD) of the vehicle; and engaging an electromagnetic clutch responsive to the speed of the grounding gear reaching a clutch engagement threshold speed.
Public/Granted literature
- US20220219670A1 METHODS AND SYSTEMS FOR A TWO-SPEED ACCESSORY DRIVE OF AN ENGINE Public/Granted day:2022-07-14
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