Marianne Lambert Vykydal

US Patent:

6378505, Apr 30, 2002

Filed:

Aug 15, 2000

Appl. No.:

09/639651

Inventors:

Jeffrey Allen Doering - Canton MI
Brent Edward Sealy - Dearborn MI
Jae Doo Chung - Westland MI
Marianne L. Vykydal - Onsted MI
Patrick Joseph Curran - Northville MI

Assignee:

Ford Global Technologies, Inc. - Dearborn MI

International Classification:

F02M 3302

US Classification:

123520, 123198 D

Abstract:

A method is presented for diagnosing a condition in the fuel vapor purge system. The engine, the fuel tank and the carbon canister are connected in a three-way connection. The engine can be selectively isolated by a purge control valve, and the fuel tank can be selectively isolated by a fuel tank control valve. The operation of both valves is coordinated by an electronic engine controller. By isolating the fuel tank, and comparing the actual rate of change of the internal tank pressure (from the tank pressure sensor) to the estimated rate of change (from engine operating conditions) it is possible to determine if a condition occurred, and whether it is in the tank or in the vapor purge lines.

US Patent:

6422214, Jul 23, 2002

Filed:

Aug 15, 2000

Appl. No.:

09/638691

Inventors:

Brent Edward Sealy - Dearborn MI
Jae Doo Chung - Westland MI
Jeffrey Allen Doering - Canton MI
Marianne L. Vykydal - Onsted MI
Patrick Joseph Curran - Northville MI

Assignee:

Ford Global Technologies, Inc. - Dearborn MI

International Classification:

F02M 3704

US Classification:

123520, 123674

Abstract:

A method is presented for controlling fuel tank pressure in an internal combustion engine. The engine, the fuel tank and the carbon canister are connected in a three-way connection. The engine can be selectively isolated by a purge control valve, and the fuel tank can be selectively isolated by a fuel tank control valve. The operation of both valves is coordinated by an electronic engine controller. By isolating the fuel tank during the carbon canister purge, better estimate of the fuel fraction flowing into the engine can be achieved, thereby improving fuel economy.

US Patent:

6595190, Jul 22, 2003

Filed:

Jul 30, 2001

Appl. No.:

09/918080

Inventors:

Brent Edward Sealy - Dearborn MI
Douglas Joseph Mancini - Farmington MI
Jeffrey Allen Doering - Canton MI
Marianne Lambert Vykydal - Onsted MI
Thomas Raymond Culbertson - Livonia MI

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

F02M 3302

US Classification:

123520, 123518

Abstract:

A system and method for adjusting fuel vapor delivery from a fuel vapor recovery system in an internal combustion engine. A requested amount of fuel vapor delivery is determined based upon a desired fuel vapor delivery amount and various system constraints, which ensure continued optimal operation of the vehicle. Purge fuel ratios are calculated by comparing desired levels to actual levels of various operating parameters. The purge fuel ratios are compared to each other to determine the minimum value from among the various purge fuel ratios, which is indicative of the most limiting system constraint. The most limiting system constraint is used to calculate an amount of fuel vapor to be delivered from the vapor recovery system.

US Patent:

6651640, Nov 25, 2003

Filed:

Jul 30, 2001

Appl. No.:

09/918151

Inventors:

Brent Edward Sealy - Dearborn MI
Douglas Joseph Mancini - Farmington MI
Jeffrey Allen Doering - Canton MI
Marianne Lambert Vykydal - Onsted MI
Thomas Raymond Culbertson - Livonia MI

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

F02D 4114

US Classification:

123698, 123520

Abstract:

A system and method for adjusting fuel vapor delivery from a fuel vapor recovery system in an internal combustion engine. An engine controller calculates a purge fuel fraction that is indicative of an amount of fuel vapor passing through the vapor recovery system relative to a total amount of purge flow, including air, passing through the vapor recovery system. A purge percent fuel parameter indicative of an amount of fuel vapor delivered to the engine from the fuel vapor recovery system relative to a total amount of fuel delivered to the engine is calculated based on the purge fuel fraction. Finally, the controller adjusts an amount of fuel vapor released from the vapor recovery system based on the purge percent fuel parameter.

US Patent:

58162232, Oct 6, 1998

Filed:

Dec 29, 1997

Appl. No.:

8/998637

Inventors:

James Richard Jamrog - Novi MI
David Chester Waskiewicz - Livonia MI
Marianne L. Vykydal - Onsted MI

Assignee:

Ford Global Technologies, Inc. - Dearborn MI

International Classification:

F02M 3300
F02D 3100

US Classification:

123520

Abstract:

An engine controller tracks purge system pressure within a vapor line extending from a fuel tank to a carbon canister and, in the event that pressure changes at an unduly high rate, operates to restrict the purging of vapor from a carbon canister.