JPS6166625U - - Google Patents

Description

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

図面は本考案の実施例を示し、第１図は全体図
、第２図はブローオフ弁の拡大断面図である。 １……内燃機関、２……排気ターボ過給機、３
……排気タービン、４……ブロワー圧縮機、７…
…過給通路、８……エアクリーナ、１０……吸入
通路、１３……バイパス通路、１４……ブローオ
フ弁、１５……弁箱、１６……弁座、１７……弁
体、１８……ばね、１９……ダイヤフラム、２０
……ダイヤフラム、２２……第１のダイヤフラム
室、２３……過給圧伝達通路、２４……第２のダ
イヤフラム室、２５……過給圧導入通路、２６…
…大気通路、２７……切換弁、２８……センサー
。 The drawings show an embodiment of the present invention, with FIG. 1 being an overall view and FIG. 2 being an enlarged sectional view of a blow-off valve. 1... Internal combustion engine, 2... Exhaust turbo supercharger, 3
...Exhaust turbine, 4...Blower compressor, 7...
...supercharging passage, 8...air cleaner, 10...suction passage, 13...bypass passage, 14...blow-off valve, 15...valve box, 16...valve seat, 17...valve body, 18...spring , 19...Diaphragm, 20
...Diaphragm, 22...First diaphragm chamber, 23...Supercharging pressure transmission passage, 24...Second diaphragm chamber, 25...Supercharging pressure introduction passage, 26...
...Atmospheric passage, 27...Switching valve, 28...Sensor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 内燃機関に装着した排気ターボ過給機における
ブロワー圧縮機に対してその上流側と下流側とを
繋ぐバイパス通路を設け、該バイパス通路中に、
前記ブロワー圧縮機より下流側の過給圧が高くな
ると当該過給圧によつて弁体がばねに抗して開く
ようにしたブローオフ弁を設けて成る排気ターボ
過給式内燃機関において、前記ブローオフ弁にお
ける弁体を、ダイヤフラムケース内を第１のダイ
ヤフラム室と第２のダイヤフラム室とに区成する
ダイヤフラムに連結し、前記第１のダイヤフラム
室に、前記ブロワー圧縮機より下流側の過給圧を
、当該過給圧によつてブローオフ弁の弁体が開く
ように導入する一方、第２のダイヤフラム室にブ
ロワー圧縮機より下流側からの過給圧導入通路を
接続し、該過給圧導入通路中には、車両の車速セ
ンサーに関連して車速が所定以下のとき過給圧を
第２のダイヤフラム室に導入し、車両の車速が所
定以上のとき第２のダイヤフラム室をブロワー圧
縮機の吸入通路又は大気に連通するように切換え
作動する切換弁を設けて成る排気ターボ過給式内
燃機関を搭載した車両の最高速度制御装置。 A bypass passage connecting the upstream side and the downstream side of the blower compressor in the exhaust turbo supercharger installed in the internal combustion engine is provided, and in the bypass passage,
In the exhaust turbocharged internal combustion engine, the exhaust turbocharged internal combustion engine is provided with a blow-off valve whose valve body opens against a spring when the boost pressure downstream of the blower compressor increases. A valve body of the valve is connected to a diaphragm that divides the inside of the diaphragm case into a first diaphragm chamber and a second diaphragm chamber, and the supercharging pressure downstream of the blower compressor is supplied to the first diaphragm chamber. is introduced so that the valve body of the blow-off valve is opened by the boost pressure, while a boost pressure introduction passage from the downstream side of the blower compressor is connected to the second diaphragm chamber, and the boost pressure is introduced. In the passage, supercharging pressure is introduced into the second diaphragm chamber when the vehicle speed is below a predetermined value in relation to the vehicle speed sensor of the vehicle, and when the vehicle speed is above the predetermined value, the second diaphragm chamber is introduced into the blower compressor. A maximum speed control device for a vehicle equipped with an exhaust turbocharged internal combustion engine, which is equipped with a switching valve that switches to communicate with the intake passage or the atmosphere.