INTAKE CONTROL DEVICE

• Main Author: KITA TAKEHIRO
• Format: Patent
• Language: English; Japanese
• Published: 17.09.2020
• Subjects: BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

To provide an intake control device capable of effectively performing learning control for compensating an error of an air amount sensor in a wider operating region of an internal combustion engine.SOLUTION: An intake control device 10 includes: a fuel injection amount calculation section 42 calculating fuel injection amount; an estimated air amount calculation section 43 calculating estimated air amount on the basis of an air-fuel ratio and the fuel injection amount; a learning data acquisition section 44 acquiring correction target air amount on the basis of correlation data between first actually measured air amount and the estimated air amount; a reference data acquisition section 45 acquiring reference air amount on the basis of correlation data between second actually measured air amount and the estimated air amount; and an error compensation section 46 calculating a learning correction value from deviation amount of the correction target air amount from the reference air amount and compensating an error by correcting the correction target air amount by using the learning correction value. The second actually measured air amount includes at least a detection value of intake air amount when an operating state of a diesel engine 1 is a non-steady state including a transient state.SELECTED DRAWING: Figure 1 【課題】空気量センサの誤差を補償する学習制御をより広い内燃機関の運転領域で有効に行うことが可能となる吸気制御装置を提供する。【解決手段】吸気制御装置１０は、燃料噴射量を算出する燃料噴射量算出部４２と、空燃比と燃料噴射量とに基づいて推定空気量を算出する推定空気量算出部４３と、第１実測空気量と推定空気量との相関データに基づいて補正対象空気量を取得する学習用データ取得部４４と、第２実測空気量と推定空気量との相関データに基づいて基準空気量を取得する基準用データ取得部４５と、基準空気量に対する補正対象空気量の乖離量から学習補正値を算出すると共に、当該学習補正値を用いて補正対象空気量を補正することで誤差を補償する誤差補償部４６と、を備える。第２実測空気量は、ディーゼルエンジン１の運転状態が過渡を含む非定常状態である場合の吸入空気量の検出値を少なくとも含む。【選択図】図１