JPS6229446U

JPS6229446U -

Info

Publication number: JPS6229446U
Application number: JP12030385U
Authority: JP
Priority date: 1985-08-07
Filing date: 1985-08-07
Publication date: 1987-02-23

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す全体系統図、
第２図は第１図のノズルベーンの制御要領を示す
フローチヤート図、第３図は第１図のエンジンに
おけるエンジン回転数とトルクとの関係を示す線
図、第４図は第３図におけるノズルベーン開度の
大小関係を示す線図、第５図は第１図のエンジン
のギヤシフト時の過渡性能の制御を示すフローチ
ヤート図、第６図は第５図の過渡運転状態におけ
るブースト圧と燃料噴射量との関係を示す線図、
第７図は第５図の過渡運転状態における排気ガス
ターボ過給機回転数、ブースト圧の変動を示す線
図である。１……回転数センサー、２……負荷センサー、
３……アクセルペダル、４……コントローラー、
５……ベーン駆動リング、６……ノズルベーン、
７……回動軸、８……スライダー、９……アーム
、１０……ステツプモーター、１１……ウオーム
、１２……ブースト圧センサー。 FIG. 1 is an overall system diagram showing an embodiment of the present invention.
Fig. 2 is a flowchart showing the control procedure for the nozzle vane in Fig. 1, Fig. 3 is a diagram showing the relationship between engine speed and torque in the engine shown in Fig. 1, and Fig. 4 is a flowchart showing the control procedure for the nozzle vane in Fig. 3. A diagram showing the relationship between the opening degrees, Figure 5 is a flowchart showing control of transient performance during gear shifting of the engine in Figure 1, and Figure 6 is a diagram showing the boost pressure and fuel injection in the transient operating state of Figure 5. Diagram showing the relationship with quantity,
FIG. 7 is a diagram showing fluctuations in the exhaust gas turbocharger rotation speed and boost pressure in the transient operating state of FIG. 5. 1...Rotation speed sensor, 2...Load sensor,
3...Accelerator pedal, 4...Controller,
5... Vane drive ring, 6... Nozzle vane,
7...Rotation axis, 8...Slider, 9...Arm, 10...Step motor, 11...Worm, 12...Boost pressure sensor.

Claims

[Scope of utility model registration request]

In a control device for an exhaust gas turbocharged engine that inputs the engine speed and engine load and controls the nozzle vane opening of the exhaust gas turbocharger via a controller and an actuator, a boost pressure sensor and an engine Compare the deviation between the set boost pressure determined by mapping depending on the operating condition and the detected boost pressure detected by the boost pressure sensor with its allowable deviation,
When the above deviation is below the above allowable deviation, the nozzle vane opening is held as is, and when the above deviation is above the above allowable deviation, the above vane is opened when the detected boost pressure is below the set boost pressure. and a controller that controls the nozzle vane in the opening direction when the detected boost pressure is equal to or higher than the set boost pressure, and fully closes the nozzle vane when the exhaust brake is activated. Control device for exhaust gas turbocharged engine.