(19)
(11) EP 1 811 153 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
19.05.2010 Bulletin 2010/20

(43) Date of publication A2:
25.07.2007 Bulletin 2007/30

(21) Application number: 07008928.9

(22) Date of filing: 21.11.2001
(51) International Patent Classification (IPC): 
F02D 9/10(2006.01)
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 30.11.2000 JP 2000364574
30.11.2000 JP 2000364575
30.11.2000 JP 2000364576

(62) Application number of the earlier application in accordance with Art. 76 EPC:
01998725.4 / 1347162

(71) Applicant: Keihin Corporation
Shinjuku-ku, Tokyo (JP)

(72) Inventor:
  • Akiyama, Hiroshige c/o Kakuda Development Center
    Kakuda-shi, Miyagi, (JP)

(74) Representative: Piésold, Alexander James 
Dehns St Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

   


(54) Air intake system in engine


(57) A bypass passage (15) is formed in a throttle body (1) and comprised of a bypass inlet bore (15i) and a bypass outlet bore (15o), which open into an upstream portion and a downstream portion of an intake passage (2) respectively with a throttle valve (5) interposed therebetween, and a bypass intermediate portion (15m) which is provided in a device block (11) detachably secured to a mounting surface (10a) formed on the throttle body (1) and is connected at its opposite ends to the bypass inlet bore (15i) and the bypass outlet bore (15o), respectively, and a bypass valve (25), an actuator (28) and an output portion (8b) of a throttle sensor (8) are mounted to the device block (11) to form a bypass valve/sensor assembly (43). The bypass valve/sensor assembly (43) can be fabricated in parallel with the formation of the throttle body (1). Thus, it is possible to provide an enhancement in productivity of an air intake system in an engine.







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