(19)
(11) EP 0 257 654 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
24.05.1989 Bulletin 1989/21

(43) Date of publication A2:
02.03.1988 Bulletin 1988/09

(21) Application number: 87112549.8

(22) Date of filing: 28.08.1987
(51) International Patent Classification (IPC)4: F02M 3/07, F02M 3/045
(84) Designated Contracting States:
BE DE LU NL

(30) Priority: 29.08.1986 JP 131363/86 U

(71) Applicant: SUZUKI MOTOR CORPORATION
Shizuoka-ken (JP)

(72) Inventor:
  • Doi, Minoru
    Hamamatsu-shi Shizuoka-ken (JP)

(74) Representative: Klingseisen, Franz, Dipl.-Ing. et al
Patentanwälte, Dr. F. Zumstein, Dipl.-Ing. F. Klingseisen, Bräuhausstrasse 4
D-80331 München
D-80331 München (DE)


(56) References cited: : 
   
       


    (54) Idling-up controller


    (57) An idling-up control constituted by an idling-up control mechanism for moving a throttle valve (6) of a carburetor to a predetermined idling-up position by means of an actuator (14), and a fuel-cut mechanism having a fuel-cut valve (28) disposed at an intermediate portion of a slow-system passage (26) of the carburetor. The fuel-cut mechanism shuts off the supply of fuel by using a throttle-opening switch (32) when the rotational speed of the engine is reduced. The idling-up controller is provided with a first conductor (36) for effecting fuel-cut operation which connects the fuel-cut valve (28) of the fuel-cut mechanism and the throttle-opening switch (32) to each other, and a second conductor (40) for effecting idling-up operation which has an electromagnetic valve (22) for operating the actuator (14) and which is connected to the first conductor (36).







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