(19)
(11) EP 0 167 182 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
26.03.1986 Bulletin 1986/13

(43) Date of publication A2:
08.01.1986 Bulletin 1986/02

(21) Application number: 85200357

(22) Date of filing: 07.07.1982
(84) Designated Contracting States:
DE FR GB SE

(30) Priority: 07.07.1981 GB 8120988

(71) Applicant: PIPER FM LIMITED
 ()

(72) Inventor:
  • Gayler, Robert James
     ()

   


(54) Delivery of fuel to working chambers of internal combustion engines


(57) Liquid fuel from a controlled supply is delivered to a delivery tube (147) under a pressure which is too low to deliver a charge of fuel under static conditions. During an induction stroke however, air entering a cylinder of an engine is drawn through a venturi-type constriction (156) and thereby draws air from a duct (154) by-passing the engine throttle. This air is drawn through a convergent passage to pass the delivery end of the tube (147) at supersonic velocity to draw therefrom a charge of fuel. The tubes (147) for each inlet passage are in permanent communication with the same metered supply so each cylinder draws its appropriate charge in turn.






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