Ford Global Technologies, LLC

Other

Ford Motor Company Limited

Joseph Norman Ulrey

Ross Dykstra Pursifull

Gopichandra Surnilla

Brad Alan Boyer

Thomas George Leone

Alex O'Connor Gibson

Daniel Paul Madison

Michael Howard Shelby

Michael James Uhrich

Gregory McConville

Donald James Lewis

John David Russell

Mohannad Hakeem

Daniel Joseph Styles

Henry W Patterson

William Charles Ruona

Brad Alan VanDerWege

Jeffrey Allen Doering

Gregory Michael Pietron

Yuji Fujii

Jianwen James Yi

Julia Helen Buckland

Seung-Hoon Lee

James Randall Leiby

John Eric Rollinger

David Karl Bidner

Xiangying Liu

Michiel Jacques Van Nieuwstadt

Ralph Wayne Cunningham

Adam Nathan Banker

Mark Allen Dearth

Kim Hwe Ku

Allan Roy Gale

Joseph Lyle Thomas

David Oshinsky

Amey Y Karnik

Steven Wooldridge

Eric Warren Curtis

James Ervin

Roger Lyle Huffmaster

Peter John Grutter

John Anthony DeMarco

Daniel Dusa

Adithya Pravarun Re Ranga

Christopher Arnold Woodring

David Bruce Reiche

Christopher House

David Andrew Ord

Xiaogang Zhang

Devesh Upadhyay

James Alfred Hilditch

Diana D Brehob

Giovanni Cavataio

Timothy Joseph Clark

Yan Wang

Robert Walter McCabe

Mark Meinhart

Rick L Williams

Allan J Lippa

Paul Matthew Laing

Paul Zeng

Keith Michael Plagens

Karen Evelyn Bevan

Karen Elizabeth Maceroni

David Hanna

Steven Schwochert

Chris Paul Glugla

Michael John Cullen

Imad Hassan Makki

Ilya V Kolmanovsky

Larry Dean Elie

Daniel A Makled

Michael Damian Czekala

Stephen B Smith

Michael Mcquillen

Christopher Paul Glugla

Tobias John Pallett

Robert Andrew Wade

Pankaj Kumar

Mario Anthony Santillo

Joseph F Basmaji

Todd Anthony Rumpsa

Andrew Paul Bagnasco

Ravi Gopal

Samuel James Guido

John Erik Mikael Hellstrom

Nicholas Dashwood Crisp

Ed Badillo

James Matthew Kindree

Uros Kalabic

Sunil Katragadda

David Bell

Eric Matthew Storhok

Bruce J Palansky

Matthew John Gerhart

Peter Charles Moilanen

Ken O Jahr

Michael Casedy

Gopichandra Sumilla

John Curtis Hickey

A method for operating an engine during a fuel cut-off mode is disclosed. The method may adjust exhaust valve opening timing and exhaust valve lift of one or more cylinders to heat air flowing through the one or more cylinders so that a temperature of an after treatment device may be maintained or increased.

Method and system for operating an engine

Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, a method may include supplying air to an exhaust system at a location downstream of an emissions control device via the first exhaust manifold, the air not having participated in combustion in the engine, the first exhaust manifold in fluidic communication with a first exhaust valve of a cylinder and an intake manifold, the cylinder including a second exhaust valve in fluidic communication with the second exhaust manifold. The method may further include adjusting an amount of fuel injected to the engine in response to output of a first oxygen sensor, the first oxygen sensor positioned in the exhaust system upstream of the emissions control device.

Systems and methods for a split exhaust engine system

Methods and systems are provided for split exhaust engine system including a blowdown exhaust manifold coupled to an exhaust passage and a scavenge exhaust manifold coupled to an intake passage. In one example, a turbine wastegate couples a single exhaust runner out of a plurality of exhaust runners of the blowdown exhaust manifold to an exhaust passage, downstream of a turbocharger turbine. Additionally, the turbine wastegate may couple the single exhaust runner to the exhaust passage, downstream of the turbocharger turbine arranged in the exhaust passage.

Blowdown runner wastegate for a split exhaust engine system

Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, an air-fuel control method for the engine system may include flowing air from the intake manifold through a plurality of engine cylinders to a junction of the exhaust passage and a bypass passage in response to a condition, the junction positioned along the exhaust passage between first and second emission control devices. The method may further include flowing exhaust gas to the first emission control device while flowing the air to the junction.

Methods and systems are provided for reducing engine compression torque when an engine having a split exhaust system is spun unfueled. In one example, a method may include maintaining closed a blowdown exhaust valve of a cylinder, the blowdown exhaust valve coupled to a first exhaust manifold that directs gases from the cylinder to a catalyst, and opening a scavenge exhaust valve of the cylinder, the scavenge exhaust valve coupled to a second exhaust manifold that directs gases from the cylinder to an exhaust gas recirculation system. In this way, compression of gases within they cylinder is reduced while gas flow to the catalyst is prevented.

Systems and methods for reducing engine compression torque

Methods and systems are provided for reducing exhaust residuals during light load conditions in a split exhaust engine via a check valve. In one example, a scavenge exhaust manifold may be maintained above a threshold pressure by introducing fresh air into the scavenge manifold during a valve overlap period, the scavenge manifold coupled to a cylinder of an engine and coupled to an intake passage of the engine.

Split exhaust engine with idle check valve

Methods and systems are provided for diagnosing a cylinder valve deactivation mechanism in an engine system having cam-actuated valves. Movement of a latch pin of the deactivation mechanism is inferred from an induction current generated by a solenoid coupled to the latch pin, and the inferred movement is used to diagnose operation of cylinder valve deactivation mechanism. The inferred movement and a profile of the induction current is also used to estimate camshaft and crankshaft timing for improved cylinder fuel delivery in the absence of a camshaft sensor.

Method and system for variable displacement engine diagnostics

Systems and methods for operating an engine that includes one or more fuel injectors are described. The systems and methods may characterize fuel injector operation during a time when injecting fuel may be useful to maintain balance of a catalyst to reduce engine emissions. Further, large or small amounts of fuel may be injected without affecting engine combustion.

Method and system for characterizing a port fuel injector

Methods and systems are provided for an exhaust catalyst heating strategy that uses spark retard to increase an amount of heat output by an engine without a combustion stability limit. In one example, a method may include, during an engine cold start, applying an ignition spark at a timing that produces substantially zero combustion torque while maintaining an engine speed greater than a threshold speed via electric motor torque. Furthermore, an amount of heat output by the engine may be controlled by adjusting an airflow through the engine, such as by adjusting one or more of a throttle position and the engine speed.

Systems and methods for catalyst heating

Methods and systems are provided for controlling operating of a split exhaust engine system including a scavenge exhaust gas recirculation system based on a composition of constituents within a total flow through the scavenge exhaust gas recirculation system. In one example, a method may include adjusting an engine operating parameter in response to individual flows of each of burnt gases, fresh air, and fuel to an intake passage, upstream of a compressor, from a scavenge manifold coupled to scavenge exhaust valves, the individual flows of each of the burnt gases, fresh air, and fuel determined based on a valve opening overlap between the scavenge exhaust valves and intake valves of the engine.

Methods and systems for estimating a composition of flow through a scavenge exhaust gas recirculation system of a split exhaust engine system

Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, each of a first valve positioned in an exhaust gas recirculation (EGR) passage, the EGR passage coupled between the intake passage and the first exhaust manifold coupled to a first set of cylinder exhaust valves, and a second valve positioned in a flow passage coupled between the first exhaust manifold and the exhaust passage may be adjusted based on a measured pressure in the first exhaust manifold.

Methods and systems are provided for adjusting operation of a split exhaust engine system based on a total flow of gases through a scavenge exhaust gas recirculation system of the split exhaust engine system. In one example, a method may include adjusting engine operation in response to a flow of gases to an intake passage, upstream of a compressor, from a scavenge manifold coupled to scavenge exhaust valves, the flow of gases determined based on a valve opening overlap between the scavenge exhaust valves and intake valves of an engine, the scavenge exhaust valves opened at a different time than blowdown exhaust valves coupled to a blowdown manifold coupled to a turbine.

Methods and systems for estimating a flow of gases in a scavenge exhaust gas recirculation system of a split exhaust engine system

Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, the engine system may be installed in a hybrid vehicle, and, in response to a request to restart the engine while the vehicle is being propelled via motor torque only, the engine may be rotated unfueled via the motor torque at less than cranking speed while at least partially opening a valve disposed in a passage coupled between the first exhaust manifold and the intake passage. In another example, in response to the request to restart the engine, all exhaust valves of a second set of exhaust valves coupled to the second exhaust manifold may be deactivated.

Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation (EGR) to an intake passage via a ported scavenge manifold. In one example, the ported scavenge manifold includes a first scavenge manifold coupled to a plurality of exhaust runners and a second scavenge manifold coupled to the plurality of exhaust runners via ports. The location of the ports on the exhaust runners combined with adjustments to a bypass valve coupled between the first scavenge manifold and an exhaust passage and an EGR valve coupled between the second scavenge manifold and the intake passage enables exhaust gas to be preferentially flowed to the exhaust passage and blowthrough air to be preferentially flowed to the intake passage under select operating conditions.

Methods and systems are provided for controlling exhaust flow and recovering heat from exhaust gas under different operating conditions. In one example, motive flow of fresh air via an ejector coupled to an exhaust bypass assembly may be utilized to divert exhaust through a heat exchanger during cold-start conditions and heat extracted from the exhaust gas may be utilized for passenger cabin heating and other vehicle heating demands. The exhaust bypass assembly may also be used for EGR delivery wherein the exhaust heat exchanger may be used as an EGR cooler.

Method and system for exhaust gas heat recovery

Growing community of inventors

Dearborn, MI, United States of America

Joseph Norman Ulrey