JPS6197536U - - Google Patents

Description

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

第１図は本考案の一実施例を示す概略構成図、
第２図は要部の拡大断面図、第３図はＰ_１とＦａ
との関係を示す特性線図である。 １…過給機、２…コンペレツサ、３…排気ター
ビン、４，５，６…吸気通路、７…制御バルブ、
８…スロツトルバルブ、９…オリフイス、１０…
チエツクバルブ、１１…ダイヤフラム、１２…作
動室、１３…緩衝室、１４…ダイヤフラム、１５
…シヤフト、１６…弁体、１７…スプリング。 FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention;
Figure 2 is an enlarged sectional view of the main part, Figure ₃ is P1 and Fa.
FIG. DESCRIPTION OF SYMBOLS 1...supercharger, 2...compeller, 3...exhaust turbine, 4, 5, 6...intake passage, 7...control valve,
8...throttle valve, 9...orifice, 10...
Check valve, 11...Diaphragm, 12...Working chamber, 13...Buffer chamber, 14...Diaphragm, 15
...shaft, 16...valve body, 17...spring.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 過給機の空気吸入側と空気吐出側との間にバイ
パスを設け、上記バイパスに制御バルブを設け、
スロツトルバルブ下流の負圧で上記制御バルブを
動作して過給空気の還流を行なうようにしたもの
において、上記制御バルブは、上記過給機の空気
吸入側と空気吐出側の差圧で開放される弁機構を
具備し、上記弁機構には、スロツトルバルブ下流
に連通する作動室およびオリフイスを介して上記
作動室に連通する緩衝室を仕切るダイヤフラムが
設けてあり、上記作動室と緩衝室との差圧でもつ
て上記弁機構を動作し、バイパスを開放するよう
に構成したことを特徴とする過給機付エンジンの
吸入空気制御装置。 A bypass is provided between the air intake side and the air discharge side of the supercharger, and a control valve is provided on the bypass,
The control valve is operated by the negative pressure downstream of the throttle valve to recirculate the supercharged air, and the control valve is opened by the differential pressure between the air intake side and the air discharge side of the turbocharger. The valve mechanism is provided with a diaphragm that partitions a working chamber communicating downstream of the throttle valve and a buffer chamber communicating with the working chamber via an orifice, and the working chamber and the buffer chamber are separated from each other by a diaphragm. 1. An intake air control device for a supercharged engine, characterized in that the valve mechanism is operated by the differential pressure between the two and the bypass is opened.