CONTROL DEVICE FOR COMPRESSION IGNITION TYPE ENGINE

• Main Authors: INOUE ATSUSHI, MATSUMOTO KOTA, KAMISHIRO TAKEHIRO, KAWAI YUSUKE, MIYAMOTO TORU
• Format: Patent
• Language: English; Japanese
• Published: 06.12.2018
• Subjects: BLASTING; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MECHANICAL ENGINEERING; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES; WEAPONS

To suppress the NVH of a compression ignition type engine to a permissible value or lower during high revolution.SOLUTION: A control device includes a spark plug 25, and a controller 10. The controller 10 performs SPCCI combustion such that combustion is started with the spark plug 25 firing air-fuel mixture, followed by self-ignition combustion of unburnt air-fuel mixture. The controller 10 uses heat quantity ratio change means 102a for making a heat quantity ratio higher when the revolution speed of an engine 1 is high than when low.SELECTED DRAWING: Figure 11 【課題】圧縮着火式エンジンにおいて高回転時にＮＶＨを許容値以下に抑制する。【解決手段】点火プラグ２５、コントローラー１０を備える。コントローラー１０は、点火プラグ２５が混合気に点火をして燃焼が開始した後に、未燃混合気が自己着火により燃焼するＳＰＣＣＩ燃焼が行われる。コントローラー１０は、熱量比率変更手段１０２ａにより、エンジン１の回転数が低い時よりも高い時に熱量比率を高める。【選択図】図１１