(19)
(11) EP 1 136 681 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
06.08.2003 Bulletin 2003/32

(43) Date of publication A2:
26.09.2001 Bulletin 2001/39

(21) Application number: 01301438.6

(22) Date of filing: 19.02.2001
(51) International Patent Classification (IPC)7: F02D 11/10
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 24.03.2000 US 534276

(71) Applicant: Ford Global Technologies, Inc.
Dearborn, Michigan 48126 (US)

(72) Inventors:
  • Lippa, Allan J.
    Northville, Michigan 48167 (US)
  • Russell, John D.
    Farmington Hills, Michigan 48336 (US)
  • Pursifull, Ross Dykstra
    Dearborn, Michigan 48124 (US)

(74) Representative: Messulam, Alec Moses et al
A. Messulam & Co. Ltd., 43-45 High Road
Bushey Heath, Bushey, Herts WD23 1EE
Bushey Heath, Bushey, Herts WD23 1EE (GB)

   


(54) Electronic throttle control system


(57) An electronic throttle control system is described where a throttle position sensor has multiple slopes depending on the operating region. At low throttle positions, a greater slope, and thus a greater sensitivity is provided, thereby increasing control resolution. At greater throttle positions, a lower slope, and thus lower sensitivity is provided. In this way, an output signal that varies across the entire operating region of the throttle is provided for monitoring and control, while improved performance at low throttle angles can be simultaneously achieved. A method for learning a transition region is also described.






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