Ford Global Technologies, LLC

Gm Global Technology Operations LLC

Cummins Ip, Inc.

Jason Meyer

Jeffrey Allen Doering

Rajit Johri

Mark Steven Yamazaki

Kevin Ruybal

Akshay Bichkar

Xiaoyong Wang

Bradley Dean Riedle

Sangeetha Sangameswaran

Ming Lang Kuang

Yanan Zhao

Corey James Blue

Maruthi Ravichandran

Joseph F Kucharski

Bernard D Nefcy

Walter Joseph Ortmann

Matthew John Shelton

Yann G Guezennec

Gregory Michael Pietron

Fling Finn Tseng

Kenneth Paul Dudek

Stephen Yurkovich

Shawn Midlam-Mohler

Yuji Fujii

Judhajit Roy

Maruthi Thiruninravur Ravichandran

Dushyant Palejiya

Kenneth James Miller

Fazal Urrahman Syed

Scott James Thompson

Samuel Melville Glauber

Bhavesh Paradkar

John Eric Rollinger

Ryan Abraham McGee

Diana Yanakiev

Mathew Alan Boesch

Michael Glenn Fodor

Johannes Geir Kristinsson

Todd Mccullough

Mark Davison

Rohit Hippalgaonkar

Ravikumar Tumu

Stan L Bower

Hong Jiang

Steven Anatole Frait

Chen Zhang

Francis Thomas Connolly

Zhengyu Dai

Ryan J Skaff

Eric Hongtei Tseng

Layne K Wiggins

Joseph F Stanek

Qing Wang

Christopher John Teslak

Paul Aldighieri

Dale Gilman

Jose Velazquez Alcantar

Yang Xu

Sassan Farahmand

Shiqi Qiu

Naginder Gogna

Craig Edward Esler

Yevgeniya Sosonkina

Hiral Jayantilal Haria

Vivek Anand Sujan

Daniel Scott Colvin

William David Treharne

James Alfred Hilditch

Bryan Michael Bolger

James William Loch McCallum

Yixin Yao

Nimrod Kapas

John Anthony Lockwood

Scott Steadmon Thompson

Stuart N Ford

Stanley Larue Bower

Joseph Jay Torres

Minku Lee

Walt Joseph Ortmann

Justin Panhans

Andrew Eugene Burt

Sai S V Rajagopalan

Timothy Baxendale

Mary Catherine Farmer

Qi Wang

Yijing Zhang

Calvin Trescott

Huanyi Shui

David Farrell

David H Schmitt

Ameya Vivek Gadre

Arun Sebastian

Roy S Schafer

Gangarjun Veeramurthy

James Joseph Reynolds

Michael John Leads

Hirai Jayantilal Haria

Bret Keller

A fuel cell and battery power management system for a fuel cell-powered vehicle includes an electric traction motor, a traction battery in electrical communication with the electric traction motor, a fuel cell stack in electrical communication with the traction battery and the electric traction motor, and a vehicle control system. The vehicle control system is configured to operate the vehicle with at a first discharge power level and a first charging power level if fuel cell power is sufficient alone to navigate the uphill grade and to build up battery state of charge by charging the traction battery at a second charging power level when the vehicle is approaching an uphill grade if fuel cell power is not sufficient alone to navigate the uphill grade. The vehicle control system is further configured to initiate proactive depletion of the battery SOC to enable powertrain braking and to provide regenerative power.

Predictive fuel cell and battery power management for high sustained load conditions

Systems and methods for operating a driveline of a hybrid vehicle are presented. In one example, the systems and methods adjust a driveline disconnect clutch boost time duration or magnitude responsive to a pressure error and a time delay error. A driveline disconnect clutch may be operated via supplying a pressure to the driveline disconnect clutch that includes the adjusted boost time duration or magnitude.

Dynamic adaption methods and system for a driveline disconnect clutch

Methods and systems are provided for adjusting driver demand wheel torque of a vehicle. The driver demand wheel torque may be adjusted as a function of a minimum wheel torque. The minimum wheel torque may be determined according to a plurality of torques that may be evaluated in three different phases.

Method and system for adjusting a minimum driver demand wheel torque

A hybrid vehicle includes an engine, an electric machine, and a clutch configured to selectively couple the engine to the electric machine. A controller is programmed to command a torque to the electric machine based on a clutch model that includes a learned time constant previously selected using a family of candidate time constants based on a comparison of the family to measured pressure data of a previous engagement of the clutch.

Adaptive controls of engine disconnect clutch

A vehicle includes an engine, an electric machine, a disconnect clutch, and a controller. The engine and the electric machine are each configured to generate power. The disconnect clutch is disposed between the engine and the electric machine. The controller is programmed to, in response to a command to start the engine, close the disconnect clutch to transfer power from the electric machine to the engine. The controller is further programmed to control the torque of the disconnect clutch via increasing a pressure applied to the disconnect clutch based on a first-order model of the pressure applied to the disconnect clutch. The controller is further programmed to adjust the model based on a difference between an expected pressure to the disconnect clutch and a measured pressure of the disconnect clutch during a time period prior to transferring torque through the disconnect clutch.

Control system for an engine disconnect clutch in a hybrid vehicle

A fuel cell electric vehicle is powered by a fuel cell that converts hydrogen gas into electricity to power the vehicle's electric motor. The fuel cell drivetrain includes the fuel cell, traction battery, vehicle controller, and other components. The vehicle controller, also known as an electronic control unit, manages and controls various functions of the vehicle, such as the fuel cell system, engine, and traction battery. It makes decisions based on data from sensors and inputs and optimizes fuel efficiency.

Predictive fuel cell restart during low speed operation

Systems and methods for operating a driveline of a hybrid vehicle are presented. In one example, a boost phase of a procedure to close a driveline disconnect clutch may be cut short in response to an engine changing state from not rotating to rotating so that the engine may be restarted in an alternative way. The system and methods may also predict a degraded engine start from a low engine cranking speed or a long cranking time duration so that the engine may be started in an alternative way to increase a possibility of starting the engine and decrease the severity of degraded driveline disturbance.

Driveline disconnect clutch operating methods and system

Systems and methods for improving operation of a vehicle are presented. In one example, a controller may respond to a presence or absence of a prediction of an increase in vehicle speed during a look ahead window. The controller may inhibit or allow automatic engine stopping in response to the presence or absence of the prediction of the increase in vehicle speed during the look ahead window.

Methods and systems for inhibiting automatic engine shutdown

Systems and methods for starting an internal combustion engine of a hybrid vehicle are presented. In one example, the internal combustion is started via closing a driveline disconnect clutch and limiting a torque output rate of an electric machine so that vehicle speed may increase continuously without decreasing during engine cranking and run-up periods.

Systems and methods to coordinate clunk and shuffle management with engine starts in MHT drivetrains

Systems and methods for operating a driveline disconnect clutch of a hybrid vehicle are presented. In one example, a driveline disconnect clutch is positioned according to whether or not there may be slip across the driveline disconnect clutch. In one example, slip may be inferred from vehicle speed and a torque converter impeller speed.

System and method for stroking a driveline disconnect clutch

Systems and methods for starting an engine of a hybrid vehicle are described. In one example, the method selects one or more electric machines to start an engine. The method may reference a data structure, such as a matrix or table, and the matrix or table outputs which of the one or more electric machines is applied to start the engine.

Methods and system for starting an engine

Systems and methods for operating a driveline disconnect clutch of a hybrid vehicle are presented. In one example, a driveline disconnect clutch is de-stroked in a particular way so that the driveline disconnect clutch may be de-stroked more consistently. The de-stroking process may be followed by boosting and stroking the driveline disconnect clutch so as to preposition the driveline disconnect clutch or holding the clutch at an offset below stroke pressure to minimize drag.

System and method for driveline disconnect clutch de-stroking and prepositioning

A method includes estimating a first pressure at a first location of a clutch based on a flow rate of a fluid in the clutch, computing a first torque lead value based on the first pressure, computing a second torque lead value based on a second pressure, computing a third torque lead value by combining the first torque lead value and the second torque lead value, and applying torque from a motor of the vehicle based on the third torque lead value.

Method and system for providing torque to clutch in hybrid vehicle

A vehicle operating method comprising generating a base torque reserve for an engine based on a position of an accelerator pedal and a position rate of change of the accelerator pedal, where the base torque reserve is an air reserve of the engine generated by the engine. The base torque reserve may further be generated based on one or more of a drive mode, a vehicle altitude, a battery state of charge (SOC), and a transmission gear, in at least one example.

Methods and systems for coordinated shaping of HEV base torque

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Canton, MI, United States of America

Jason Meyer