Granted Patent B2

US 12,553,379 · App. 18/236,551 · Granted Feb 17, 2026

Inventor: David Colavincenzo (Castalia, OH)

Assignee: Bendix Commercial Vehicle Systems LLC

F02B67/06B60K25/00B60L1/003F02B2275/06

Abstract

Claims (35)

1 . A method of operating an accessory drive configured to drive a plurality of accessories, comprising performing, by a controller, the acts of:

receiving at least one operating condition input;

determining from the at least one input that an accessory of the plurality of accessories is to be driven by the accessory drive, the accessory having an individual accessory drive clutch;

in response to the individual accessory drive clutch being a multi-speed clutch:

determining a target operating speed of the accessory to be driven; and

controlling the multi-speed clutch to obtain the target accessory speed; and

in response to the individual accessory drive clutch not being a multi-speed clutch and in response to the individual accessory drive clutch being a dog clutch:

stopping the accessory drive,

engaging the dog clutch; and

restarting the accessory drive after the dog clutch is engaged.

2 . The method of claim 1 , further comprising:

in response to the individual accessory drive clutch not being the multi-speed clutch or the dog clutch, engaging the individual accessory drive clutch.

3 . The method of claim 1 , wherein the act of determining the target operating speed of the accessory to be driven includes determining a target accessory drive speed to be obtained after engagement of the multi-speed clutch.

4 . The method of claim 3 , wherein the target accessory drive speed is a speed at which the accessory to be driven is operated at maximum energy efficiency.

5 . The method of claim 3 , wherein the target accessory drive speed is a speed at which the accessory drive is driven to maximize an overall energy efficiency of all of the plurality of accessories being driven by the accessory drive after engagement of the individual accessory drive clutch.

6 . The method of claim 1 , further comprising determining whether the individual accessory drive clutch is a multi-speed clutch or a dog clutch based on stored information accessible by the controller.

7 . The method of claim 3 , wherein

the act of determining the target accessory drive speed is based on stored information accessible by the controller.

8 . The method of claim 4 , wherein

the act of determining the target accessory drive speed is based on stored information accessible by the controller.

9 . The method of claim 5 , wherein

the act of determining the target accessory drive speed is based on stored information accessible by the controller.

10 . A method of operating an accessory drive configured to drive a plurality of accessories, comprising performing, by a controller, the acts of:

receiving at least one operating condition input;

determining from the at least one input that two or more accessories of the plurality of accessories is to be driven by the accessory drive, each of the two or more accessories having an individual accessory drive clutch; and

for each accessory of the two or more accessories:

in response to the individual accessory drive clutch for the accessory being a multi-speed clutch:

determining a target operating speed of the accessory to be driven; and

controlling the multi-speed clutch to obtain the target accessory speed; and

in response to the individual accessory drive clutch not being a multi-speed clutch and in response to the individual accessory drive clutch being a dog clutch:

stopping the accessory drive,

engaging the dog clutch; and

restarting the accessory drive after the dog clutch is engaged.

11 . The method of claim 10 , further comprising:

in response to the individual accessory drive clutch not being a dog clutch or a multi-speed clutch, engaging the individual accessory drive clutch.

Assignments (1)

Continuity (4)

References Cited (339)