Ford Global Technolgoies, LLC

Seung-Hoon Lee

Alex O'Connor Gibson

Gregory Michael Pietron

Yuji Fujii

Jeffrey Allen Doering

Dennis C Reed

Adam Nathan Banker

James William Loch McCallum

Diana Yanakiev

Roger Lyle Huffmaster

Felix Nedorezov

Joseph Norman Ulrey

Alexander O'Connor Gibson

David Oshinsky

Michael Glenn Fodor

Christopher John Teslak

Hong Jiang

Hongtei Eric Tseng

Peter John Grutter

Joseph F Kucharski

Nimrod Kapas

Ross Dykstra Pursifull

Gopichandra Surnilla

Mohamed Redissi

David Popejoy

Bradley Dean Riedle

Marvin Paul Kraska

Jau-Wen Tseng

Ted Duane Snyder

Bernard D Nefcy

Daniel Scott Colvin

William Goodwin

Robert Orley Burkhart

John Butwin

A control system and method for controlling a multiple gear ratio automatic transmission in a powertrain for an automatic transmission having pressure activated fiction torque elements to effect gear ratio upshifts. The friction torque elements are synchronously engaged and released during a torque phase of an upshift event as torque from a torque source is increased while allowing the off-going friction elements to slip, followed by an inertia phase during which torque from a torque source is modulated. A perceptible transmission output torque reduction during an upshift is avoided. Measured torque values are used during a torque phase of the upshift to correct an estimated oncoming friction element target torque so that transient torque disturbances at an oncoming clutch are avoided and torque transients at the output shaft are reduced.

Clutch torque trajectory correction to provide torque hole filling during a ratio upshift

Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine is couple to a transmission in response to a transmission upshift to reduce transmission output shaft torque disturbances.

Methods and systems for improving transmission shifting

Systems and methods for improving operation of a hybrid vehicle are presented. In one example, compensation is provided for a dual mass flywheel positioned in a vehicle driveline. The approaches may reduce driveline torque disturbances.

Methods and systems for a driveline dual mass flywheel

A control system and method for controlling a multiple gear ratio automatic transmission in a powertrain for an automatic transmission having pressure activated friction torque elements to effect gear ratio upshifts. The friction torque elements are synchronously engaged and released during a torque phase of an upshift event as torque from a torque source is increased while allowing the off-going friction elements to slip, followed by an inertia phase during which torque from a torque source is modulated. A perceptible transmission output torque reduction during an upshift is avoided. Measured torque values are used during a torque phase of the upshift to correct an estimated oncoming friction element target torque so that transient torque disturbances at an oncoming clutch are avoided and torque transients at the output shaft are reduced.

Systems and methods for improving operation of a hybrid vehicle are presented. In one example, driveline operating modes may be manually selected to improve hybrid driveline operation during off road conditions. The approaches may improve vehicle drivability and reduce driveline degradation.

Methods and systems for a vehicle driveline

Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine may be started in one of two ways depending on operating conditions. In particular, the engine may be started via a lower power output electric machine or a higher power output electric machine.

Methods and systems for engine cranking

Systems and methods for improving operation of a hybrid vehicle are presented. In one example, driveline braking may transition from regenerative braking to engine braking to reduce the possibility of battery degradation.

Methods and systems providing driveline braking

Systems and methods for improving operation of a hybrid vehicle are presented. In one example, a driveline may selectively enter a sailing mode to provide quick driveline torque response with reduced impact on fuel economy.

Methods and systems for conditionally entering a driveline sailing mode

Systems and methods for improving operation of a hybrid vehicle are presented. In one example, operation of a driveline disconnect clutch is adjusted to compensate for clutch wear and manufacturing tolerances.

Methods and systems for operating a driveline clutch

Systems and methods for improving operation of a hybrid vehicle are presented. In one example, torque transferred via a driveline disconnect clutch is estimated based on characteristics of a torque converter to improve driveline operation.

Methods and systems for adjusting driveline disconnect clutch operation

Systems and methods for improving hybrid vehicle torque control are presented. The system and methods included may estimate driveline torque via springs of a dual mass flywheel. The estimated driveline torque may provide feedback for adjusting operation of a driveline disconnect clutch and/or engine torque.

Methods and systems for vehicle driveline torque estimation

A method and a system for improving operation of a hybrid vehicle are presented. In one example, a disconnect clutch is operated in response to an engine stop request to adjust an engine stopping position during an engine shutdown. The approach may reduce engine starting time after the engine stop.

Growing community of inventors

Northville, MI, United States of America

Seung-Hoon Lee