Intake device for engine with supercharger

Abstract

Abstract PURPOSE:To aim at abatement in exhaust gas temperature and secureness in intake air resonance effect by setting the geometric compression ratio of an engine and the substantial valve closing timing of an intake port to each of more than specified value, while preventing an intake air overlap among respective cylinders from occurring. CONSTITUTION:A V-type 6-cylinder supercharged engine E0 has two banks 2A and 2B where each of three cylinders 1a, 1c, 1e and 1b, 1d, 1f. And, in a main intake passage 5, there are provided with a mechanical supercharger 13 and an intercooler 14. And, in a passage 19 to be interconnected to each converging passage 8 of two intake manifolds 7A and 7B, there is provided with a shutter valve 20. In this case, each geometric compression ratio of these cylinders 1a-1f should by set to a high compression ratio of more than 8.5. In addition, an opening characteristic of each intake valve (unillustrated herein) should be set so as to get opening at laser time of more than 20 deg. after a top dead point and to close at later time of more than 50 deg. after a bottom dead point, respectively.

Inventors

• 👤 Mitsuo Hitomi
• 👤 光夫 人見
• 👤 Junzo Sasaki
• 👤 潤三 佐々木

Bibliographic Details