JPH0356831U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は２サイクル内燃機関の全体図、第２図
はエアブラスト弁の拡大側面断面図、第３図は給
排気弁の開弁期間、エアブラスト弁の開弁期間等
を示す線図、第４図はバイパス制御弁の開度と変
速機の増速比を示す線図、第５図は給気量を制御
するためのフローチヤートである。 １２，１４…給気ダクト、１３…機械式過給機
、２４…変速機、２５…バイパス給気通路、２６
…バイパス制御弁。 Fig. 1 is an overall view of a two-stroke internal combustion engine, Fig. 2 is an enlarged side sectional view of the air blast valve, Fig. 3 is a line diagram showing the opening periods of the supply and exhaust valves, the opening periods of the air blast valve, etc. FIG. 4 is a diagram showing the opening degree of the bypass control valve and the speed increasing ratio of the transmission, and FIG. 5 is a flowchart for controlling the amount of air supply. 12, 14...Air supply duct, 13...Mechanical supercharger, 24...Transmission, 25...Bypass air supply passage, 26
...Bypass control valve.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] スロツトル弁を有しない吸気通路内に機械式過
給機を配置して該機械式給機を変速機を介して機
関により駆動し、機械式過給機を迂回するバイパ
ス吸気通路を設けて該バイパス吸気通路内にバイ
パス制御弁を配置し、機関負荷が低いときにはバ
イパス制御弁によつて吸入空気量を制御すると共
に機関負荷が高いときには変速機の増速比を変え
ることによつて吸入空気量を制御するようにした
内燃機関の吸気制御装置。 A mechanical supercharger is placed in an intake passage that does not have a throttle valve, and the mechanical supercharger is driven by the engine via a transmission, and a bypass intake passage is provided that bypasses the mechanical supercharger. A bypass control valve is placed in the intake passage, and when the engine load is low, the amount of intake air is controlled by the bypass control valve, and when the engine load is high, the amount of intake air is controlled by changing the speed increase ratio of the transmission. An intake control device for an internal combustion engine.