| US 7,588,008 B2 | ||
| Intake system of internal combustion engine | ||
| Shuji Ogawa, Toyota (Japan); and Motonobu Hasegawa, Kariya (Japan) | ||
| Assigned to Aisin Seiki Kabushiki Kaisha, Aichi-ken (Japan) | ||
| Filed on Nov. 08, 2007, as Appl. No. 11/979,810. | ||
| Claims priority of application No. 2006-304633 (JP), filed on Nov. 10, 2006. | ||
| Prior Publication US 2008/0110430 A1, May 15, 2008 | ||
| Int. Cl. F02M 35/10 (2006.01); F02D 9/08 (2006.01) | ||
| U.S. Cl. 123—184.21 [123/184.53; 123/336] | 9 Claims |
| 1. An intake system of an internal combustion engine, comprising:
an engine head;
a resin made intake manifold mounted at the engine head and having a plurality of intake passages, the resin made intake manifold
forming a receiving portion on an inner wall of each intake passage at a downstream side thereof; and
a control unit disposed at the receiving portion, the control unit including:
a resin made cartridge;
an opening and closing valve disposed at the cartridge; and
a shaft for rotating the opening and closing valve,
wherein a clearance is provided between an inner circumferential surface of the receiving portion and an outer circumferential
surface of the cartridge to allow deformation of the resin made intake manifold, and the cartridge is provided with a flange
held between the engine head and the resin made intake manifold, and
wherein the flange is provided with an elastic flange portion and a fixed flange portion and a space is defined between the
elastic and fixed flange portions.
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