PROBLEM TO BE SOLVED: To suppress a variation of an opening of an adjusting valve which adjusts a minute variation of an opening of a throttle valve in the execution of EGR, and a supply amount of exhaust emission to an intake pipe.SOLUTION: In the execution of EGR, when a pressure difference ΔPM which is obtained by subtracting intake pipe pressure (last-time PMpre) which can be obtained by a required throttle opening which is set when a last-time suction air amount control routine is performed from required intake pipe pressure which is set on the basis of required torque which is required to an engine, a gain G is set at a value of 0, and a throttle valve is controlled so that an opening becomes a required throttle opening based on the required torque. By this constitution, a minute variation of an opening of the throttle valve and a variation of an opening of the adjusting valve (hunting) can be suppressed.SELECTED DRAWING: Figure 3
【課題】EGRを行なうときにおけるスロットルバルブの開度の微少な変動や吸気管への排気の供給量を調節する調節バルブの開度の変動を抑制する。【解決手段】EGRを行なうときには、エンジンに要求される要求トルクに基づいて設定した要求吸気管圧力から前回吸入空気量制御ルーチンを実行したときに設定した要求スロットル開度で実現できる吸気管圧力(前回PMpre)を減じた圧力差ΔPMが値(−A)以上値A以下の範囲内であるときには、ゲインGを値0にし、要求トルクに基づく要求スロットル開度となるようスロットルバルブを制御する。これにより、スロットルバルブの開度の微少な変動や調節バルブの開度の変動(ハンチング)を抑制することができる。【選択図】図3
INTERNAL COMBUSTION ENGINE
内燃機関装置
2016-12-08
Patent
Electronic Resource
Japanese
IPC: | F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF |
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