Ford Global Technolgoies, LLC

Kurt Howard Nickerson

Bradley Dean Riedle

Charles William Suter

Markian Oleh Diakiw

Kendrick Morrison

Steve Michael Cicala

Stephen Michael Cicala

Jianping Zhang

Ihab S Soliman

Bruce J Palansky

Brian Keyse

Cory Benson LaRoche

Philip Joseph Wiethe

Cory Benson Laroche

Thaddeus Hill

Jaewon Choi

Leonidas Kiliaris

Scott James Thompson

Derek Kinch

Corey James Blue

Richard Reynolds Hathaway

Brian Michael O'Neil

Lee John Becker

Bang Kim Cao

Conor Edward Sullivan

Donald A Perlick

Alexander Phillip McDonnell

Edward Katynski

David H Schmitt

Ken Sovel

Eric Frank Banners

Scott Patrick Ries

Karl M Jungbluth

Charles W Barnes

Jeffrey Randolph Holmes

Donald G Levens

Michelle S Grytzelius

Christopher Marcus Williams

Robert E Meyer

Jerry Lee Aeschliman, Jr

Joe Ulakovich

Mahendra Patil

David Gilewski

Rodney Smith

Stephen John Bettley

A vehicle includes an engine, a transmission, and a controller. The engine is configured to generate power to propel the vehicle. The transmission has gears and clutches configured to shift between the gears. The controller is programmed to operate the clutches during wide-open throttle events to upshift the gears at shift points corresponding to engine speeds. The controller is further programmed to adapt the shift points by increasing the shift points over a series of the wide-open throttle events from initial values to mature values.

Shift point adaptation method for a vehicle powertrain

A method and system for operating a vehicle that includes a driveline disconnect clutch and a step-ratio transmission is described. In one example, the method includes shifting the step-ratio transmission to neutral and accelerating an engine to an expected input shaft speed of the step-ratio transmission via applying full output capacity of an electric machine to the engine.

Method and system for starting an engine

A vehicle includes an engine and a transmission having an input shaft operably coupled to the engine, an output shaft operably coupled to wheels of the vehicle, a primary pump, and a secondary pump. The primary and secondary pumps are each configured to supply pressurized fluid to a valve body of the transmission. A controller is programmed to, in response to a loss of pressure of the primary pump and a speed of the output shaft exceeding a first threshold, shift the transmission to a neutral state, energize the secondary pump once the transmission is in the neutral state, and command the engine to idle speed.

Systems and methods for operating transmission with auxiliary pump in power-limiting mode

A method for downshifting a vehicle having an automatic transmission is described. In one example, the method determines whether or not conditions are met for a power matching downshift. If conditions are met for a power matching downshift, output power of a powertrain propulsion torque source at an end of the power matching downshift is adjusted to an output power of the powertrain propulsion torque source at the beginning of the power matching downshift plus an offset power.

Method and system for power matching during a downshift

Systems and methods for operating a vehicle that includes an engine and an electric machine are described. In one example, an actual total number of transmission gear downshifts are counted to determine whether or not a transmission clutch characterization is immature. The transmission clutch characterization may be adjusted if it is determined to be immature.

Methods and system for adapting operation of a transmission clutch

A vehicle includes a transmission having a plurality of friction elements selectively engageable to establish power flow paths within the transmission. A controller of the vehicle is programmed to, during a boost phase of a shift, command a first hydraulic boost pressure for a plurality of control loop cycles to an oncoming one of the friction elements (oncoming friction element) and subsequently command a second hydraulic boost pressure less than the first hydraulic boost pressure for only a single control loop cycle that defines an end of the boost phase to the oncoming friction element.

Systems and methods for controlling friction elements

Systems and methods for operating a driveline that includes a step ratio transmission or a continuously variable transmission (CVT) that may be operated in a step ratio mode are disclosed. In one example, engagement speeds for transmission gears are adjusted as a function of vehicle mass, road grade, and requested braking torque.

System and method for operating a vehicle in a low transmission range

Methods and apparatus are disclosed herein that perform automatic downhill snub braking. An example apparatus disclosed herein includes an electronic powertrain controller to cause a deceleration of a vehicle in response to a first request from an electronic cruise controller, the first request responsive to a change in grade of a driving surface and an electronic brake controller to apply snub braking to the vehicle in response to a second request received from the electronic cruise controller, the second request responsive to a speed of the vehicle reaching a maximum speed.

Automatic downhill snub braking

A vehicle powertrain includes an engine and a transmission, each controlled by controllers that communicate with one another. When the vehicle is coasting in certain gears, a one-way clutch over-runs. When the driver depresses the accelerator pedal (tips in), the transmission controller adjusts a transmission torque demand limit which is communicated to the engine controller. In response, the engine controller adjusts the engine torque, resulting in a smooth re-engagement of the one-way clutch.

Vehicle control during tip-in

A vehicle powertrain includes an engine and a transmission coupled to the engine. The transmission has a first neutral state in which a first combination of clutches are engaged and a second neutral state in which a second combination of clutches are engaged. A vehicle controller is programmed to, in response to the transmission being in the first neutral state and an engine-torque request exceeding a threshold value, shift the transmission to the second neutral state.

Method and control for operating a transmission in neutral

A vehicle includes an accelerator pedal moveable across a plurality of predefined positions and a controller programmed to, responsive to the pedal reaching a tip-in position, command a downshift to a downshift gear from an initial gear. A difference between the initial and downshift gears exceeds a number of predefined positions crossed upon moving to the tip-in position when a rate of change of pedal position exceeds a predefined threshold.

Downshift scheduling for a vehicle

When a vehicle driver selects reverse while a vehicle is moving forward, a transmission controller applies friction shift elements within the transmission to create a partial tie-up condition to decelerate the vehicle. Once the vehicle slows below a threshold speed, the controller engages a selectable one way brake and releases some of the friction shift elements to engage a reverse gear ratio.

Vehicle and method to control rolling engagements

A system controlling gain in a control element includes a source of line pressure, a source of signal pressure, a control valve that controls communication between line pressure and the control element, including a first differential area communicating with control element pressure, and a second differential area, and a gain control valve that opens and closes communication between control element pressure and the second differential area in response to signal pressure.

Hydraulic gain of transmission control elements

A method for controlling a transmission gearshift includes engaging control elements whose engagement is required for operation in first gear and reverse gear without grounding the transmission's input, grounding said input provided a range other than park is selected, grounding the transmission's output, releasing the input, producing first gear provided first gear is selected, and producing reverse gear provided reverse gear is selected.

Park disengagement clunk mitigation

A method for fabricating a motor vehicle including an engine and automatic transmission includes generating first data containing information representing a performance characteristic of a solenoid and a serialized solenoid number, affixing to the solenoid a first barcode matrix containing the first data, installing the solenoid and clutch in the transmission generating second data containing information representing a performance characteristic of clutch, using information from the first and second data to produce third data that includes a serialized transmission number and information from the first data and the second data, affixing to the transmission a third barcode matrix containing the third data, using information from the third barcode matrix to produce fourth data that is tied to a vehicle identification number and information from the first data, the second data and the third data, reading information from the fourth data into an electronic memory of a powertrain control module (PCM), and installing the PCM in the vehicle.

Providing component-specific performance characterization data for an assembly or subsystem

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Shelby Township, MI, United States of America

Kurt Howard Nickerson