CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE AND LEARNING METHOD FOR LEARNING VALUE IN INTERNAL COMBUSTION ENGINE

• Main Authors: MURAKAMI SHIGEMI, IDOGAWA MASANAO, SUGIMOTO MOTOHIRO
• Format: Patent
• Language: English; Japanese
• Published: 20.06.2019
• Subjects: BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; WEAPONS

To efficiently perform each learning processing and thus early complete the learning processing.SOLUTION: A control device 100 includes: a P/L learning section 109 for performing P/L learning processing; a purge learning section 103 for performing purge learning processing; an air-fuel ratio learning section 108 for performing air-fuel ratio learning processing; and a storage section 102 in which a learning result obtained by each learning processing is stored. At start of an engine, when the learning result obtained by each learning processing is not stored in the storage section 102, the P/L learning section 109 learns injection properties of a cylinder inner injection vale 23 through the P/L learning processing each time the cylinder inner injection valve 23 performs P/L injection, and interrupts the P/L learning processing before the P/L learning processing is completed. On the condition that the P/L learning processing is interrupted, the purge learning section 103 performs the purge learning processing, and the air-fuel ratio learning section 108 starts the air-fuel ratio learning processing. On the condition that the purge learning processing is completed, the P/L learning section 109 resumes the P/L learning processing.SELECTED DRAWING: Figure 4 【課題】各学習処理を効率よく実施することにより、これら各学習処理を早期に完了させることができるようにすること。【解決手段】制御装置１００は、Ｐ／Ｌ学習処理を実施するＰ／Ｌ学習部１０９と、パージ学習処理を実施するパージ学習部１０３と、空燃比学習処理を実施する空燃比学習部１０８と、各学習処理による学習結果が記憶される記憶部１０２とを備える。機関始動時に各学習処理による学習結果が記憶部１０２に記憶されていない場合、Ｐ／Ｌ学習部１０９は、筒内噴射弁２３がＰ／Ｌ噴射を行う毎にＰ／Ｌ学習処理によって筒内噴射弁２３の噴射特性を学習し、Ｐ／Ｌ学習処理の完了前にＰ／Ｌ学習処理を中断する。Ｐ／Ｌ学習処理の中断を条件に、パージ学習部１０３がパージ学習処理を実施し、空燃比学習部１０８が空燃比学習処理を開始する。そして、パージ学習処理の完了を条件に、Ｐ／Ｌ学習部１０９がＰ／Ｌ学習処理を再開する。【選択図】図４