JPS6199637U

JPS6199637U -

Info

Publication number: JPS6199637U
Application number: JP18602184U
Authority: JP
Priority date: 1984-12-06
Filing date: 1984-12-06
Publication date: 1986-06-25

Description

[Brief explanation of the drawing]

第１図ないし第６図は本考案のターボチヤージ
ヤ付エンジンの一実施例を示す図であり、第１図
はその概略構成図、第２図はそのエンジン回転数
と過給圧との関係を示す図、第３図はそのエンジ
ン回転数と出力トルクとの関係を示す図、第４図
は第１制御バルブと第３制御バルブのコントロー
ルユニツトにおける開閉制御のフローチヤート、
第５図はコントロールユニツトに記憶された第１
制御バルブの開閉データのデータテーブルを示す
図、第６図は第３制御バルブの開閉状態を、エン
ジン回転数とスロツトルバルブのバルブ開度との
関係で示す図である。第７図ないし第８図は従来
のターボチヤージヤ付エンジンを示す図であり、
第７図はその概略構成図、第８図はそのエンジン
回転数と出力トルクとの関係を示す図、第９図は
他の従来のターボチヤージヤ付エンジンのエンジ
ン回転数と出力トルクとの関係を示す図である。１１……主ターボチヤージヤ、１２……副ター
ボチヤージヤ、１３……主タービン、１４……主
コンプレツサ、１５……主排気管、１６……主吸
気管、１７……副タービン、１８……副コンプレ
ツサ、１９……副排気管、２０……副吸気管、２
１……第１制御バルブ、２２……バイパス管、２
３……第２制御バルブ、３２……コントロールユ
ニツト。 Figures 1 to 6 are diagrams showing an embodiment of the turbocharged engine of the present invention, with Figure 1 showing its schematic configuration and Figure 2 showing the relationship between the engine speed and supercharging pressure. Figure 3 is a diagram showing the relationship between the engine speed and output torque, Figure 4 is a flowchart of opening/closing control in the control unit of the first control valve and the third control valve,
Figure 5 shows the first data stored in the control unit.
FIG. 6 is a diagram showing a data table of control valve opening/closing data, and is a diagram showing the opening/closing state of the third control valve in relation to the engine speed and the valve opening degree of the throttle valve. Figures 7 and 8 are diagrams showing conventional turbocharged engines;
FIG. 7 is a schematic diagram of the configuration, FIG. 8 is a diagram showing the relationship between the engine speed and output torque, and FIG. 9 is a diagram showing the relationship between the engine speed and output torque of another conventional turbocharged engine. It is a diagram. 11...Main turbocharger, 12...Sub-turbocharger, 13...Main turbine, 14...Main compressor, 15...Main exhaust pipe, 16...Main intake pipe, 17...Sub-turbine, 18...Sub-compressor, 19... Sub-exhaust pipe, 20... Sub-intake pipe, 2
1...First control valve, 22...Bypass pipe, 2
3...Second control valve, 32...Control unit.

Claims

[Scope of utility model registration request]

The engine includes a main turbocharger and a sub-turbocharger arranged in parallel, and the main turbocharger includes a main turbine into which engine exhaust gas is introduced through a main exhaust pipe, and a main turbine which is driven by the main turbine and directs intake air through the main intake pipe to the engine. a main compressor for supercharging the engine, and the sub-turbocharger has a sub-turbine into which engine exhaust gas is introduced through a sub-exhaust pipe branched from the main exhaust pipe, and a sub-turbine driven by the sub-turbine to direct intake air to the main intake pipe. a sub-compressor for supercharging the engine through a merging sub-intake pipe, a first control valve for opening and closing the sub-exhaust pipe is provided in the sub-exhaust pipe, and a sub-exhaust pipe downstream of the first control valve; The main exhaust pipe is connected to the main exhaust pipe through a bypass pipe, and a second control valve is provided for opening and closing the bypass pipe, and the first control valve and the second control valve are connected to each other by a bypass pipe.
A turbocharged engine characterized by being provided with a control unit that controls the opening and closing of a control valve based on the operating state of the engine.