US 11,718,174 B2
Vehicle with engine power limiting based on clutch capacity
Nicholas Harris, West Bloomfield, MI (US); Andrew Monticello, Farmington Hills, MI (US); Kyle Culek, Royal Oak, MI (US); and Ashok E. Rodrigues, Farmington Hills, MI (US)
Assigned to Ford Global Technologies, LLC, Dearborn, MI (US)
Filed by FORD GLOBAL TECHNOLOGIES, LLC, Dearborn, MI (US)
Filed on May 25, 2021, as Appl. No. 17/329,415.
Prior Publication US 2022/0379722 A1, Dec. 1, 2022
Int. Cl. B60K 23/08 (2006.01); B60K 17/348 (2006.01); B60K 17/02 (2006.01); F16D 48/06 (2006.01)
CPC B60K 23/08 (2013.01) [B60K 17/02 (2013.01); B60K 17/348 (2013.01); F16D 48/06 (2013.01); F16D 2500/10431 (2013.01); F16D 2500/30404 (2013.01); F16D 2500/30406 (2013.01); F16D 2500/3108 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An all-wheel-drive vehicle comprising:
an engine;
a primary axle operably coupled to the engine;
a secondary axle including an input operably coupled to the engine, a first halfshaft, a second halfshaft, a first clutch selectively connecting the first halfshaft to the input, and a second clutch selectively connecting the second halfshaft to the input; and
a transmission having an input coupled to the engine and output coupled to the primary drive axle;
a power-transfer unit coupled to the transmission and including a third clutch; and
a driveshaft coupling the power-transfer unit and the input, wherein the third clutch selectively couples the output to the driveshaft;
a controller programmed to, during a power-limiting routine, command a torque to the engine based on closed-loop feedback control such that the torque decreases when a calculated slip of a selected one of the first and second clutches is greater than a target slip of the selected clutch and increases when the calculated slip is less than the target slip.