CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

• Main Author: IWATANI KAZUKI
• Format: Patent
• Language: English; Japanese
• Published: 08.02.2018
• Subjects: BLASTING; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

PROBLEM TO BE SOLVED: To make boost pressure at a position between a compressor of a turbocharger and an electric compressor in an intake passage and boost pressure at a position downstream of the electric compressor in the intake passage promptly correspond to their target values and attain acceleration in response to acceleration request of a driver by using a simple method.SOLUTION: On the basis of a difference between a target value of first boost pressure at a position between a compressor 4a of a turbocharger 4 and an electric compressor 6 in an intake passage 2 and a detection value of the first boost pressure detected by a first pressure sensor 41, an exhaust gas flow control mechanism for controlling a flow rate of exhaust gas supplied to a turbine 4b of the turbocharger 4 is controlled. On the basis of a difference between a target value of second boost pressure at a position downstream of the electric compressor 6 in the intake passage 2 and a detection value of the second boost pressure detected by a second pressure sensor 42, the electric compressor 6 is controlled.SELECTED DRAWING: Figure 1 【課題】吸気通路のうちのターボチャージャのコンプレッサと電動コンプレッサとの間の位置の過給圧、および、吸気通路のうちの電動コンプレッサよりも下流側の位置の過給圧をそれらの目標値に迅速に一致させ、簡易な手法によってドライバの加速要求に応じた加速を実現する。【解決手段】吸気通路２のうちのターボチャージャ４のコンプレッサ４ａと電動コンプレッサ６との間の位置の第１過給圧の目標値と、第１圧力センサ４１によって検出された第１過給圧の検出値との差に基づいて、ターボチャージャ４のタービン４ｂに供給される排気ガスの流量を調整する排気ガス流量調整機構を制御し、吸気通路２のうちの電動コンプレッサ６よりも下流側の位置の第２過給圧の目標値と、第２圧力センサ４２によって検出された第２過給圧の検出値との差に基づいて電動コンプレッサ６を制御する。【選択図】図１