Ford Global Technolgoies, LLC

Shunsuke Okubo

Carol Louise Okubo

Ming Lang Kuang

Jonathan Andrew Butcher

Fazal Urrahman Syed

Paul Stephen Bryan

Kenneth Frederick

Shailesh Shrikant Kozarekar

Matthew D Smith

Floyd Cadwell

Christopher Adam Ochocinski

John Czubay

Alan Robert Dona

Justin Badger

Kent Hancock

Thomas Francis Rolewicz, Jr

Rajit Johri

Brendan F Diamond

Ryan Abraham McGee

John Ottavio Michelini

Marvin Paul Kraska

Walter Joseph Ortmann

William David Treharne

William Paul Perkins

Ryan J Skaff

Bryan Michael Bolger

Michael Alan Tamor

Joseph Gerald Supina

Stephen Lee Cooper

Maruthi Ravichandran

Jonathan Hair

David J Mack

David Richens Brigham

Mary Catherine Farmer

Naginder Gogna

Seth Anthony Bryan

Shehan Haputhanthri

Paul M Gartner

Craig Edward Esler

Jacob Doan

Seth Loveall

Justin Carmen Campanaro

Bhavesh Paradkar

Kimberly Trice

Mohamad Mansour

Khang Thanh Hong

Matt Smith

Bryan Whitney Belt

Benjamin Nault

Benjamin Thorsen

Christopher Ochocincski

Systems and methods for operating an electric drive system for an electric or hybrid vehicle is described. In one example, the drive system is operated to provide extra losses during select vehicle operating conditions so that greater amounts of regenerative braking may be generated without having to store larger amounts of electric energy in an electric energy storage device.

Methods and system for controlling loss mode for an electric machine

Methods and systems are provided for a drivetrain system comprising: a first prime mover for supplying a torque to a front axle; a second prime mover for supplying a torque to a rear axle; and a controller configured to, in response to a torque reversal, command the front axle and the rear axle to cross lash zones sequentially.

Clunk and shuffle management in multi-motor, multi-axle electrified drivetrains

A vehicle includes an electrified propulsion system powered by a traction battery over an electrical distribution system (EDS) and a controller programmed to monitor at least one of a current flow and a temperature at a plurality of locations throughout the EDS. The controller is also programmed to implement at least one mitigation action over a predetermined time window in response to detecting a filtered current value exceeding a threshold.

Electrified vehicle electrical distribution system component protection systems and methods

A method according to an exemplary aspect of the present disclosure includes, among other things, periodically adjusting powertrain operation of an electrified vehicle equipped with an internal combustion engine to progressively influence oil quality of oil of the internal combustion engine.

Oil maintenance strategy for electrified vehicles

A method includes controlling an electrified vehicle by automatically commanding an output torque from an electric machine if the electrified vehicle is in park and an engine start or stop request has been received. A road grade may be used to determine whether or not to command the output torque.

Vehicle systems and methods for avoiding unintentional electrified vehicle movement and for reducing electrified vehicle noise, vibration, and harshness

Methods and systems are provided for adjusting a torque delivered to wheels of an electrically propelled vehicle based on a battery discharge power. In one example, a method may include, during conditions of a lower than threshold battery output power, reducing the torque delivered to the vehicle wheels from a deliverable torque output.

Methods and system for limiting torque in a BEV

Methods and systems are provided for controlling an engine speed in a hybrid vehicle system during steady-state conditions and in response to transient acceleration and/or deceleration requests. In one example, an engine speed is controlled to an optimal engine speed for fuel economy during steady-state conditions, and in response to an acceleration or deceleration request, a target engine speed is obtained from a rate-limited optimal engine speed to vehicle speed ratio, and the engine is controlled to the target engine speed provided the target speed is below a threshold difference from optimal engine speed. In this way, the vehicle system may simulate a fixed ratio transmission during accelerations and decelerations, while maintaining optimal engine speed for fuel economy at steady state.

Systems and methods for controlling engine speed in a hybrid vehicle

A vehicle includes an electric machine, an engine, an engine mount, and a controller. The engine has a base speed that corresponds to a speed of the electric machine and an engine power demand. The engine mount is disposed between the engine and a vehicle structure such as a frame or unibody. The controller is configured to, in response to compression of the engine mount, increase an engine speed to a value that is greater than the base speed to reduce engine lugging.

Hybrid vehicle and method of reducing engine lugging

A method includes controlling an electrified vehicle by automatically engaging a braking device if the electrified vehicle is in park and an engine start or stop request has been received. Controlling the electrified vehicle includes preventing a brake lamp from illuminating during engagement of the braking device.

Vehicle systems and methods for reducing electrified vehicle noise, vibration, and harshness

A vehicle includes, an engine, an electric machine having an associated battery, and a controller. The controller is configured to disable the engine and operate the electric machine to propel the vehicle when a proximity of the vehicle to a destination is less than a drive range of the battery.

Automatic drive mode selection

A system and method for controlling a hybrid vehicle having an engine, first and second electric machines coupled to a traction battery and configured to operate primarily as a motor and a generator, respectively, and a controller in communication with the engine and the first and second electric machines include increasing target engine speed from a sea level speed to deliver a demanded engine power at altitude up to an NVH engine speed limit. The system and method may reduce the demanded engine power based on an attainable engine power associated with the NVH engine speed limit. A demanded wheel power may be reduced in response to the reduced engine power.

Speed limiting of altitude compensation for target engine speed in hybrid electric vehicles

A drivetrain system includes a controller that is programmed to, in a presence of a request for increased drivetrain torque that results in reversal of drivetrain torque direction, command an increase in drivetrain torque at a reduced rate while a value that is based on drivetrain speed difference remains within a predetermined range absent a braking torque request exceeding a threshold. The controller is further programmed to command the increase at an accelerated rate upon the braking torque request exceeding the threshold.

Hybrid vehicle and lash mitigation strategy

A hybrid electric vehicle includes an internal combustion engine configured to provide power to traction wheels, and a controller. The controller is configured to, in response to the engine being off and a power request exceeding an engine-start threshold, delay an engine start when vehicle speed is below a predetermined value. Delaying an engine start may include providing an engine-start-threshold offset. The offset decreases as vehicle speed increases. The engine is started when the power request exceeds a sum of the engine-start threshold and the engine-start-threshold offset.

Method for increasing electric operation in hybrid electric vehicles

A hybrid electric vehicle includes an internal combustion engine, a traction battery, and a hybrid electric powertrain including an electric motor powered by the traction battery and an electric generator coupled to the internal combustion engine and the traction battery. A control method includes determining minimum and maximum engine power limits based on desired wheel torque and traction battery charge and discharge power limits. A generator torque command is calculated to track engine speed to the desired engine speed. The generator torque command is limited based on the minimum and maximum engine power limits to limit engine power transmitted to the powertrain.

Generator power control

A method for increasing fuel economy of a vehicle such as a plug-in hybrid electric vehicle (PHEV) having an engine and a battery each configured to supply power to propel the vehicle includes supplying power from the battery and operating the engine below peak efficiency to supply from the engine only the difference in power between a demanded power and the power which the battery can deliver when the demanded power exceeds the power which the battery can deliver.

Method for increasing fuel economy of plug-in hybrid electric vehicles

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Belleville, MI, United States of America

Shunsuke Okubo