Fumin Min Yuan

US Patent:

6523531, Feb 25, 2003

Filed:

Dec 3, 2001

Appl. No.:

09/997797

Inventors:

Lee Albert Feldkamp - Plymouth MI
Fumin Yuan - Canton MI
Gerald Jesion - Woodhaven MI

Assignee:

Ford Global Technologies, Inc. - Dearborn MI

International Classification:

F02D 4114

US Classification:

123698, 123520

Abstract:

A method for air/fuel operation of an engine. The engine is supplied fuel from both a fuel purging system to purge fuel in a fuel supply and feed such purged fuel to an intake manifold of the engine and a fuel injection system to inject fuel from such fuel supply into a cylinder of such engine. The method includes producing a first air/fuel ratio control signal in accordance with measured exhaust gas oxygen emission from the engine; producing a second air/fuel ratio control signal in accordance with fuel transport delay through the fuel purging system; combining the first and second air/fuel ratio control signals into a composite control signal; and feeding such composite control signal to the fuel injection system. Producing the first air/fuel ratio control signal comprises determining fuel flow rate through the purge system. The purge system includes a valve, such valve passing the fuel in the purging system to the intake manifold at a rate relate to a duty cycle of a control signal fed to such valve and wherein the flow rate is determined in response to the duty cycle the control signal fed to the valve.

US Patent:

6666200, Dec 23, 2003

Filed:

Dec 10, 2001

Appl. No.:

10/010211

Inventors:

Lee Albert Feldkamp - Plymouth MI
Fumin Yuan - Canton MI
Gerald Jesion - Woodhaven MI

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

F02D 4114

US Classification:

123698, 123520

Abstract:

A method for air/fuel operation of an engine. The method includes providing a model of the engine. The model represents a relationship between: (1) a signal model LAMBSE, representative of estimated air/fuel ratio of the engine relative to a stoichiometric air/fuel ratio for the engine; and, (2) fuel injected into the cylinder of the engine. Exhaust gas oxygen emission from the engine is measured during operation of such engine. Actual LAMBSE produced by such engine during operation of such engine is produced as a function of such measured oxygen. The actual LAMBSE is compared with the model LAMBSE provided by the model in response to fuel injected into the engine to produce a model error signal. The fuel injected into the engine is adjusted in accordance with the error signal.

US Patent:

6990800, Jan 31, 2006

Filed:

Nov 19, 2003

Appl. No.:

10/717120

Inventors:

Michiel van Nieuwstadt - Ann Arbor MI, US
Michele Reichenbach - Troy MI, US
Fumin Yuan - Canton MI, US

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

F10N 3/00

US Classification:

60277, 60274, 60286, 60297, 60301

Abstract:

An accurate thermodynamic model of an Active Lean NOx (ALNC) Catalyst is presented. The model takes into account hydrocarbon storage and release mechanisms of the ALNC, as well as the degradation in the ALNC hydrocarbon conversion efficiency due to ageing, and thus provides a more accurate estimate of an exotherm generated by hydrocarbon combustion in the ALNC. The estimated exotherm can them be used to detect system degradation and identify components responsible for the degradation.

US Patent:

6990854, Jan 31, 2006

Filed:

Nov 19, 2003

Appl. No.:

10/717119

Inventors:

Michiel van Nieuwstadt - Ann Arbor MI, US
Michele Reichenbach - Troy MI, US
Fumin Yuan - Canton MI, US

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

G01M 15/00

US Classification:

731181, 73 2331

Abstract:

An accurate thermodynamic model of an Active Lean NOx (ALNC) Catalyst is presented. The model takes into account hydrocarbon storage and release mechanisms of the ALNC, as well as the degradation in the ALNC hydrocarbon conversion efficiency due to ageing, and thus provides a more accurate estimate of an exotherm generated by hydrocarbon combustion in the ALNC. The estimated exotherm can them be used to detect system degradation and identify components responsible for the degradation.

US Patent:

20050252197, Nov 17, 2005

Filed:

Jul 22, 2005

Appl. No.:

11/188177

Inventors:

Michiel Nieuwstadt - Ann Arbor MI, US
Michele Reichenbach - Troy MI, US
Fumin Yuan - Canton MI, US

International Classification:

F01N003/00
F01N007/00

US Classification:

060277000, 060286000, 060285000

Abstract:

An accurate thermodynamic model of an Active Lean NOx (ALNC) Catalyst is presented. The model takes into account hydrocarbon storage and release mechanisms of the ALNC, as well as the degradation in the ALNC hydrocarbon conversion efficiency due to ageing, and thus provides a more accurate estimate of an exotherm generated by hydrocarbon combustion in the ALNC. The estimated exotherm can them be used to detect system degradation and identify components responsible for the degradation.

US Patent:

45504024, Oct 29, 1985

Filed:

Dec 22, 1983

Appl. No.:

6/564611

Inventors:

Melvin G. Gable - Ypsilanti MI
Richard H. Sherman - Fremont CA
Fumin Yuan - Canton MI

Assignee:

Ford Motor Company - Dearborn MI

International Classification:

H04J 302
H04Q 1104

US Classification:

370 85

Abstract:

A data communication system for providing data transmission between a plurality of individually addressable local computer networks, by utilizing single node switching across a common passive bus medium. The passive bus medium is characterized as having a plurality of separate conductors of limited length that are each commonly connected to individual bus interface circuits for each local computer network. Each bus interface circuit has a number of dedicated address data ports, message data ports and control ports that are connected to separate dedicated conductors of the passive bus medium for transmitting data to and receiving data from other local computer networks. Each message transmission of data on the passive bus medium is divided into a number of mini-packets each of which contain a number of parallely transmitted bits corresponding to the number of dedicated address and message conductors in the passive bus medium. Each mini-packet is separately transmitted on the passive bus medium and separately acknowledged by the designated receiving bus interface circuit. Mini-packets are of two types for each message.

US Patent:

59212217, Jul 13, 1999

Filed:

May 8, 1998

Appl. No.:

9/075291

Inventors:

Leighton Ira Davis - Ann Arbor MI
Charles Stuart Daw - Knoxville TN
Lee Albert Feldkamp - Plymouth MI
John William Hoard - Livonia MI
Fumin Yuan - Canton MI
Francis Thomas Connolly - Ann Arbor MI

Assignee:

Ford Global Technologies, Inc. - Dearborn MI
Ford Motor Company - Dearborn MI
Lockheed Martin Energy Research Corp. - Oak Ridge TN

International Classification:

F02M 700

US Classification:

123436

Abstract:

Cyclic variation in combustion of a lean burning engine is reduced by detecting an engine combustion event output such as torsional acceleration in a cylinder (i) at a combustion event (k), using the detected acceleration to predict a target acceleration for the cylinder at the next combustion event (k+1), modifying the target output by a correction term that is inversely proportional to the average phase of the combustion event output of cylinder (i) and calculating a control output such as fuel pulse width or spark timing necessary to achieve the target acceleration for cylinder (i) at combustion event (k+1) based on anti-correlation with the detected acceleration and spill-over effects from fueling.