(19)
(11) EP 0 524 575 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.11.1994 Bulletin 1994/47

(43) Date of publication A2:
27.01.1993 Bulletin 1993/04

(21) Application number: 92112348.5

(22) Date of filing: 20.07.1992
(51) International Patent Classification (IPC)5: F02D 41/14, F02D 41/26
(84) Designated Contracting States:
DE ES FR GB

(30) Priority: 26.07.1991 IT 910591

(71) Applicant: MAGNETI MARELLI S.p.A.
I-20145 Milano (IT)

(72) Inventors:
  • Abate, Maurizio
    I-10043 Orbassano (IT)
  • Carnevale, Claudio
    I-10076 Nole Canavese (IT)
  • Nenzioni, Pietro
    I-40100 Bologna (IT)
  • Perotto, Aldo
    I-10050 Meana Di Susa (IT)

(74) Representative: Cerbaro, Elena et al
c/o Studio Torta, Via Viotti 9
10121 Torino
10121 Torino (IT)


(56) References cited: : 
   
       


    (54) Adaptive electronic injection fuel delivery control system


    (57) An adaptive electronic injection fuel delivery control system wherein a processing unit (10) receives and processes input signals proportional to the air intake pressure (P) and temperature (T) in the manifold of the engine, and supplies an output value (Qb) indicating the amount of fuel to be injected for achieving a substantially correct stoichiometric air/fuel ratio. The above value (Qb) is subsequently corrected by two coefficients (K₀₂ and Kad), the first calculated in closed-loop manner by integrating the difference between the signal generated by an exhaust sensor (20) and a reference voltage value (Vst), and the second by interpolating a set of values comprising the inverse of the air intake value (1/(Q)), and previously measured values of the K₀₂ parameter.






    Search report