Intake system for an internal combustion engine

Abstract

Abstract PURPOSE: To enhance the air filling efficiency of a V-shaped cylinder type internal combustion engine by providing an intake box within an intake system and arranging intake pipes communicating with cylinders on both sides within the intake box so that a smooth flow of the intake air can be obtained. CONSTITUTION: An air cleaner 11 is arranged in the space above V-shaped cylinders 1W4. To the upper portion of the air cleaner 11 is connected an intake box 9 through a passage pipe 10. In the communication portion between the air cleaner 11 and the intake box 9 is formed a slope 17' which spreads upwardly so as to distribute air into the box 9. In the bottom of the box 9 are opened the upper openings 5aW8a of four intake pipes communicating with four cylinders 1W4 respectively. The openings 5aW8a are arranged around the passage pipe 10 to equalize the amount of air distributed into the respective cylinders 1W4. The box 9 further includes a blow-by gas reservoir 12 whose branch pipes 13W15 communicate with the central portion of the respective openings 5aW8a. COPYRIGHT: (C)1981,JPO&Japio

Inventors

• 👤 Hiroshi Kimura

Bibliographic Details