JPS61113928U

JPS61113928U -

Info

Publication number: JPS61113928U
Application number: JP20209184U
Authority: JP
Priority date: 1984-12-26
Filing date: 1984-12-26
Publication date: 1986-07-18

Description

[Brief explanation of the drawing]

図面は本考案の実施例を示し、第１図は機関の
平面図、第２図は第１図の―視断面図、第３
図は第１図の―視断面図、第４図は第１図の
―視拡大断面図である。１……内燃機関、２……吸気マニホールド、３
……二連式気化器、４……一次側吸気ポート、５
……二次側吸気ポート、６，７……吸気弁、９…
…一次側気化器、１０……二次側気化器、１３…
…一次側集合部、１４……二次側集合部、１５，
１６……一次側吸気通路、１７，１８……二次側
吸気通路、１９，２０，２１，２２……一次側ト
ーナメント状小枝吸気通路，２３，２４，２５，
２６……二次側トーナメント状小枝吸気通路。 The drawings show an embodiment of the present invention, in which Fig. 1 is a plan view of the engine, Fig. 2 is a sectional view of Fig. 1, and Fig. 3 is a sectional view of the engine.
The figure is a cross-sectional view of FIG. 1, and FIG. 4 is an enlarged cross-sectional view of FIG. 1...Internal combustion engine, 2...Intake manifold, 3
...Double carburetor, 4...Primary side intake port, 5
...Secondary side intake port, 6, 7...Intake valve, 9...
...Primary side carburetor, 10...Secondary side vaporizer, 13...
...Primary side collecting part, 14...Secondary side collecting part, 15,
16... Primary side intake passage, 17, 18... Secondary side intake passage, 19, 20, 21, 22... Primary side tournament-shaped twig intake passage, 23, 24, 25,
26... Secondary tournament-shaped twig intake passage.

Claims

[Scope of utility model registration request]

Each cylinder in an internal combustion engine using a dual carburetor is formed with a primary intake port and a secondary intake port, and an intake valve is provided in both the primary intake port and the secondary intake port. On the other hand, the primary side intake port is connected to the primary side carburetor of the dual type carburetor via the primary side intake passage, and the secondary side intake port is connected to the primary side carburetor of the dual type carburetor via the secondary side intake passage. In an internal combustion engine that is connected to a secondary side carburetor, two adjacent cylinders among the cylinders are made into a pair, and each secondary side intake port of both cylinders forming this pair is connected to a portion adjacent to each other. , each primary side intake port in both cylinders is located at a location outside of the two adjacent secondary intake ports,
A secondary intake passage from the secondary carburetor to both cylinders forming a pair is branched in a tournament shape and connected to both secondary intake ports, while a secondary intake passage from the primary carburetor to both cylinders is connected to both secondary intake ports. An intake system for an internal combustion engine, characterized in that a primary side intake passage to the secondary side intake passage is branched in a tournament shape outside a tournament branching portion of the secondary side intake passage.