CONTROL DEVICE OF ON-VEHICLE INTERNAL COMBUSTION ENGINE

• Main Author: NISHIMURA TAICHI
• Format: Patent
• Language: English; Japanese
• Published: 23.08.2018
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MECHANICAL ENGINEERING; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

PROBLEM TO BE SOLVED: To provide a control device of an on-vehicle internal combustion engine which can avoid that a gas which is high in a purge gas concentration is introduced into a combustion chamber, and thereby an air-fuel ratio becomes rich when an operation state is transited to a deceleration state from an acceleration state.SOLUTION: A control device 500 comprises a purge control part 501 and a supercharge control part 502. When supercharge is performed, the purge control part 501 performs a purge by selecting a first purge passage 381 as a purge path, when the supercharge is not performed, performs the purge by selecting a second purge passage 382 as the purge path, and on the other hand, when an operation state of an internal combustion engine 10 is transited to a deceleration state, stops the purge. Furthermore, when the operation state is transited to the deceleration state from an acceleration state that the supercharge is performed, the supercharge control part 502 performs supercharger rotation number suppression control for raising a deceleration speed of a rotation number of a compressor 220 of a supercharger 200 rather than the case that the purge gas concentration is lower than a normal concentration on condition that the purge gas concentration is not lower than the normal concentration.SELECTED DRAWING: Figure 1 【課題】加速状態から減速状態へと移行したときに、パージガス濃度の高いガスが燃焼室に導入されて空燃比がリッチになってしまうことを抑制することのできる車載内燃機関の制御装置を提供する。【解決手段】制御装置５００は、パージ制御部５０１と、過給制御部５０２とを備えている。パージ制御部５０１は、過給が行われるときにパージ経路として第１パージ通路３８１を選択してパージを行い、過給が行われないときにパージ経路として第２パージ通路３８２を選択してパージを行う一方、内燃機関１０の運転状態が減速状態へと移行したときにはパージを停止させる。また、過給が行われている加速状態から減速状態へと移行したときには、パージガス濃度が規定濃度以上であることを条件に、過給制御部５０２が、パージガス濃度が規定濃度未満であるときよりも過給器２００のコンプレッサ２２０の回転数の減少速度を高くする過給器回転数抑制制御を実行する。【選択図】図１