(19)
(11) EP 2 434 136 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
17.09.2014 Bulletin 2014/38

(43) Date of publication A2:
28.03.2012 Bulletin 2012/13

(21) Application number: 11175942.9

(22) Date of filing: 29.07.2011
(51) International Patent Classification (IPC): 
F02M 31/18(2006.01)
F02D 9/10(2006.01)
 F02M 25/08(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 22.09.2010 JP 2010211682

(71) Applicant: Keihin Corporation
Tokyo 163-0539 (JP)

(72) Inventors:
  • Shirai, Junji
    Miyagi, 981-1505 (JP)
  • Takahashi, Kuniaki
    Miyagi, 981-1505 (JP)

(74) Representative: Prechtel, Jörg 
Weickmann & Weickmann Patentanwälte Postfach 86 08 20
81635 München
81635 München (DE)

   


(54) Evaporative fuel control apparatus for internal combustion engine


(57) In an evaporative fuel control apparatus (10), a first passage (48) of a bypass conduit (40) is connected between an upstream side of an intake passage (24b) and a switching valve (42), and second passages (50a to 50d) interconnect the switching valve (42) and downstream sides of respective intake passages (24a to 24d), whereas a purge conduit (46) to which the evaporative fuel is supplied is connected with respect to the switching valve (42). The switching valve (42) is operated responsive to a driven state of the internal combustion engine (12), thus switching between a communication state between the first passage (48) and the second passages (50a to 50d), and a communication state between the purge conduit (46) and the second passages (50a to 50d), such that intake air or evaporative fuel is made to flow to the intake passages (24a to 24d).







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Search report