JPS62108536U - - Google Patents

Description

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

第１〜３図はこの考案の実施例を示し、第１図
は過給機制御装置の概略断面図、第２，３図はそ
れぞれ車速非抑制時と車速抑制時とのアクチユエ
ータの動作説明図である。第４図は従来の過給機
制御装置の概略構成図である。第５図は車速と出
力との関係を示すグラク図、第６図は回転数と過
給圧との関係を示すグラフ図である。 図において、２は過給機、４は給気通路、６は
排気通路、８はコンプレツサ、１０はタービン、
１２はバイパス通路、２０はアクチユエータ、２
６は第１ダイヤフラム、２８は第２ダイヤフラム
、３０は第１圧力室、３２は第２圧力室、３４は
第１ロツド、３６は第２ロツド、４０は第１閉止
ばね、４２は第２閉止ばね、４６は導圧通路、４
８は第１導圧通路、５０は第２導圧通路、５２は
切換弁、５４は車速センサ、５６は制御部である
。 Figures 1 to 3 show an embodiment of this invention, with Figure 1 being a schematic sectional view of the supercharger control device, and Figures 2 and 3 being explanatory diagrams of the operation of the actuator when vehicle speed is not suppressed and when vehicle speed is suppressed, respectively. It is. FIG. 4 is a schematic configuration diagram of a conventional supercharger control device. FIG. 5 is a graph diagram showing the relationship between vehicle speed and output, and FIG. 6 is a graph diagram showing the relationship between rotation speed and supercharging pressure. In the figure, 2 is a supercharger, 4 is an air supply passage, 6 is an exhaust passage, 8 is a compressor, 10 is a turbine,
12 is a bypass passage, 20 is an actuator, 2
6 is a first diaphragm, 28 is a second diaphragm, 30 is a first pressure chamber, 32 is a second pressure chamber, 34 is a first rod, 36 is a second rod, 40 is a first closing spring, 42 is a second closing spring. spring, 46 is a pressure guiding path, 4
Reference numeral 8 denotes a first pressure guiding passage, 50 a second pressure guiding passage, 52 a switching valve, 54 a vehicle speed sensor, and 56 a control section.

補正 昭６１．８．２３ 実用新案登録請求の範囲を次のように補正する
。Amendment August 23, 1981 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】 過給機のタービンを迂回して排気通路を連通す
るバイパス通路にウエイストゲート弁を設け、こ
のウエイストゲート弁を第２開度位置に開動させ
る第２圧力室に設けた第２圧力応動体とこの第２
圧力応動体を介して前記ウエイストゲート弁を前
記第２開度位置よりも小開度の第１開度位置に開
動させる第１圧力室に設けた第１圧力応動体とを
有するアクチユエータを設け、このアクチユエー
タには前記ウエイストゲート弁閉動方向の弾圧力
を前記第１圧力応動体に付与する第１閉止ばねを
設けるとともに前記ウエイストゲート弁閉動方向
の弾圧力を前記第２圧力応動体に付与する第２閉
止ばねを設け、前記過給機のコンプレツサ下流側
の給気通路に開口始端する導圧通路を第１導圧通
路および第２導圧通路に分岐形成するとともにこ
れら第１導圧通路および第２導圧通路をそれぞれ
前記第１圧力室および第２圧力室に開口終端させ
、設定車速未満においては前記第２圧力室に大気
圧を導入するとともに設定車速以上においては前
記第２圧力室に過給圧を導入すべく切換連通する
切換弁を設けたことを特徴とする内燃機関の過給
機制御装置。[Claims for Utility Model Registration] A wastegate valve is provided in a bypass passage that bypasses the turbine of a supercharger and communicates with an exhaust passage, and the wastegate valve is provided in a second pressure chamber that opens to a second opening position. The second pressure-responsive body and this second pressure-responsive body
and a first pressure responsive body provided in a first pressure chamber that opens the wastegate valve to a first opening position smaller than the second opening position via the pressure responsive body; The actuator is provided with a first closing spring that applies an elastic force in the closing direction of the waste gate valve to the first pressure responsive body, and also applies an elastic force in the closing direction of the waste gate valve to the second pressure responsive body. A second closing spring is provided, and a pressure impulse passage which opens in the air supply passage on the downstream side of the compressor of the supercharger is branched into a first pressure impulse passage and a second pressure impulse passage, and these first pressure impulse passages and a second pressure passage is opened and terminated in the first pressure chamber and the second pressure chamber, respectively, and atmospheric pressure is introduced into the second pressure chamber when the vehicle speed is less than a set speed, and when the vehicle speed is higher than the set speed, the second pressure chamber is introduced into the second pressure chamber. A supercharger control device for an internal combustion engine, characterized in that a switching valve is provided for switching communication to introduce supercharging pressure to the internal combustion engine.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 過給機のタービンを迂回して排気通路を連通す
るバイパス通路にウエイストゲート弁を設け、こ
のウエイストゲート弁を第２開度位置に開動させ
る第２圧力室に設けた第２圧力応動体とこの第２
圧力応動体を介して前記ウエイストゲート弁を前
記第２開度位置よりも小開度の第１開度位置に開
動させる第１圧力室に設けた第１圧力応動体とを
有するアクチユエータを設け、このアクチユエー
タには前記ウエイトゲート弁閉動方向の弾圧力を
前記第１圧力応動体に付与する第１閉止ばねを設
けるとともにこの第１閉止ばねよりも小なる前記
ウエイストゲート弁閉動方向の弾圧力を前記第２
圧力応動体に付与する第２閉止ばねを設け、前記
過給機のコンプレツサ下流側の吸気通路に開口始
端する導圧通路を第１導圧通路および第２導圧通
路に分岐形成するとともにこれら第１導圧通路お
よび第２導圧通路をそれぞれ前記第１圧力室およ
び第２圧力室に開口終端させ、設定車速未満にお
いては前記第２圧力室に大気圧を導入するととも
に設定車速以上においては前記第２圧力室に過給
圧を導入すべく切換連通する切換弁を設けたこと
を特徴とする内燃機関の過給機制御装置。 A waste gate valve is provided in a bypass passage that bypasses the turbine of the supercharger and communicates with the exhaust passage, and a second pressure responsive body provided in a second pressure chamber that opens the waste gate valve to a second opening position and this Second
and a first pressure responsive body provided in a first pressure chamber that opens the wastegate valve to a first opening position smaller than the second opening position via the pressure responsive body; The actuator is provided with a first closing spring that applies an elastic force in the closing direction of the weight gate valve to the first pressure responsive body, and an elastic force in the closing direction of the waste gate valve that is smaller than the first closing spring. The second
A second closing spring is provided to the pressure-responsive body, and a pressure impulse passage opening in the intake passage on the downstream side of the compressor of the supercharger is branched into a first impulse passage and a second impulse passage. A first pressure impulse passage and a second pressure passage are opened and terminated in the first pressure chamber and the second pressure chamber, respectively, and atmospheric pressure is introduced into the second pressure chamber when the vehicle speed is lower than a set vehicle speed, and when the vehicle speed is higher than the set vehicle speed, the atmospheric pressure is introduced into the second pressure chamber. A supercharger control device for an internal combustion engine, characterized in that a switching valve is provided for switching communication to introduce supercharging pressure into a second pressure chamber.