Ford Global Technolgoies, LLC

Ford Motor Company Limited

David Crist Gabriel

Michael W Degner

Venkateswa Anand Sankaran

Scott James Thompson

James Paul McCarthy

Raj Prakash

William David Treharne

Ray C Siciak

Derek Hartl

Christopher Alan Lear

Bo Wu

Jeffrey Allen Doering

Ming Lang Kuang

Rajit Johri

Mark Steven Yamazaki

Patrick Daniel Maguire

Dale Scott Crombez

Feng Liang

Walter Joseph Ortmann

Chen Zhang

Mathew Alan Boesch

Leonard Anthony Shaner

Benjamin A Tabatowski-Bush

Jonathan Andrew Butcher

Paul Stephen Bryan

Todd Mccullough

Jonathan Hair

Karin Lovett

Stephen John Kotre

Steven F Chorian

Hongjie Wu

Yuqing Tang

Rimma Isayeva

Cathleen Tistle

Thomas Chrostowski

J Anthony Lockwood

Renuka Vikram Gokhale

Elizabeth Rose Bifano

Travis Smith

Arun Ganesan

Brian Khoi-Duy Nguyen

An electric drive system for a vehicle includes a speed/position feedback device coupled to an electric machine and configured to provide an index pulse. The system further includes an inverter having a line voltage sensor. The system includes a controller programmed to, responsive to the electric machine rotating at a generally constant speed without commanding the inverter, generate a resolver offset from a time difference between a zero crossing of a line voltage and the index pulse and operate the inverter according to the resolver offset.

System and method for in-vehicle resolver alignment

An electrified vehicle includes a transmission system including a differential and an electrically powered heating device configured to selectively warm a differential fluid of the differential. The electrically powered heating device is selectively powered to warm the differential fluid.

Systems and methods for improving driveline efficiencies of electrified vehicles

A high-voltage system for a vehicle includes a module having a resonant circuit coupled across powerlines, and a controller. The controller is programmed to, during a power up of the high-voltage system, propagate on the powerlines a first signal at a fundamental frequency for a first period. The controller is further programmed to, in response to a first impedance measured across the powerlines at the fundamental frequency during the period being less than a predetermined value, close main contactors to energize the module.

Tuned resonance HV interlock

A vehicle is disclosed having a motor and engine selectively coupled to the motor via a clutch. The vehicle includes a controller configured to, in response to a vehicle wheel torque reversal, open the clutch to disconnect the engine from the motor, command the engine to enter a speed control mode, and control a motor output torque through a region surrounding the vehicle wheel torque reversal to reduce torque disturbances in a vehicle driveline.

System and method for controlling lash crossing in a vehicle powertrain

Systems and methods provide an alternative high voltage cutoff technique for disconnecting a high voltage battery from an electrical network of a vehicle in the event of a fault condition. Embodiments include a vehicle system comprising an electrical bus and a battery module coupled to the electrical bus via a contactor and a disconnector. The vehicle system further includes a controller configured to switch the contactor to an open state, upon receiving a fault condition signal, and if the contactor failed to open, activating the disconnector to break electrical connection between the battery module and the electrical bus. In some embodiments, the fault condition signal is generated upon detecting a vehicular impact. In some embodiments, the disconnector is a pyrotechnic device powered by a vehicle battery included in the vehicle system.

High voltage cutoff for electrified vehicles

A auto-stop/start vehicle with an engine and a battery includes at least one controller that calibrates an engine auto-stop delay time based on a state of charge (SOC) of a battery. The calibrated engine auto-stop delay time increases as the SOC of the battery decreases, and decreases as the SOC of the battery increases. The controller further initiates shutdown of an engine upon expiration of the calibrated engine auto-stop delay time.

Calibration of engine auto-stop delay times

A vehicle control system includes a controller that is programmed to, in response to an accelerator lift-pedal event, generate a drag torque, with at least one of an engine and electric machine, having a magnitude that is based on a deceleration fuel shut-off torque of the engine and a desired power output of the electric machine, and limit the drag torque to a threshold value that is based on the deceleration fuel shut-off torque.

Deceleration control system for a hybrid vehicle

Methods and systems are presented for providing information to a vehicle driver allows the driver to make an informed decision regarding selecting higher or lower octane fuel to operate the vehicle. In one example, the driver is presented fuel cost per unit distance traveled based on operating the vehicle on higher octane fuel and lower octane fuel.

Method and system for selecting fuel octane

Data is collected in a vehicle relating to a potential obstacle. Based at least in part on the collected data, an obstacle is identified. At least one characteristic of the obstacle is determined. At least one torque to be applied in a vehicle powertrain is determined based at least in part on the at least one characteristic of the obstacle.

Detecting and negotiating a climbable obstacle in a vehicle

A hybrid-electric vehicle and method of controlling a hybrid-vehicle is provided. The vehicle includes a traction battery, at least one electric-machine, and a controller. The controller is configured to alter a voltage between the battery and the electric-machine based on a measured voltage of the battery or the high voltage bus. In response to an indication that the measured voltage is faulty during a drive cycle, the controller instead alters the voltage between the battery and the electric machine based on a substituted battery voltage signal such that the electric-machine remains operable for the drive cycle.

Control strategy for an electric machine in a vehicle

A vehicle, a control system for a vehicle having a user interface, and a method of controlling a vehicle are provided. In response to input selecting an electric-only operating mode, an engine is disabled such that the vehicle is propelled by an electric machine. In response to detecting a predefined vehicle state while the electric-only operating mode is selected, the engine is re-enabled such that the vehicle is propelled by at least one of the engine and electric machine. In response to detecting an absence of the predefined vehicle state while the electric-only operating mode is selected, the engine is disabled such that the vehicle is propelled by the electric machine.

System override for user selected electric-only operation of a hybrid vehicle

A vehicle having an electric machine arrangement, including an electric machine operable to drive the vehicle includes a control system having at least one controller. The control system is configured to implement a method for thermal mitigation of the electric machine arrangement. The thermal mitigation strategy is controlled such that a time between successive implementations of the strategy is inversely related to a temperature of at least a portion of the electric machine arrangement, and the time between two successive implementations of the thermal mitigation strategy may decrease with each successive pair of implementations.

Vehicle and method for controlling an electric machine

An electric drive system having a power source which provides power to an electric motor through an electric motor control. Discharging of stored capacitor energy of a capacitor coupled between the power source and the electric motor controller is provided by controlling energy transfer from the capacitor to the electric motor.

Method and system for discharging a capacitive element

A system and a method for dissipating voltage in an electrical circuit of a vehicle. The system includes a power source and an inverter. The power source has a voltage source and a contactor. The inverter is electrically coupled to the power source and includes a device for storing an electrical charge. The contactor is opened to disconnect the voltage source before the device is discharged.

System and a method for dissipating voltage in an electrical circuit of a vehicle

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Royal Oak, MI, United States of America

David Crist Gabriel