INTAKE SYSTEM STRUCTURE OF INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To reduce air resistance at a connection part of two bent intake pipes of an internal combustion engine. SOLUTION: An aperture end of an upstream intake pipe at its inner side of a bent portion is widened in a sectional area so as to obtain a substantially perpendicular angle i...

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Bibliographische Detailangaben
Hauptverfasser: URANO NORIHIKO, MIYAKUBO HIROSHI
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To reduce air resistance at a connection part of two bent intake pipes of an internal combustion engine. SOLUTION: An aperture end of an upstream intake pipe at its inner side of a bent portion is widened in a sectional area so as to obtain a substantially perpendicular angle in respect to a pipe end wall 1a, to form a widened portion 1b. Similarly, a widened portion 2b is formed on the outer side of the bent portion of a downstream side intake pipe 2. A widened part 2c whose aperture area is increased is formed on the inner side of the bent portion of the downstream side intake pipe 2.