抄録
Adjusting the proportion of dimethylether (DME) and hydrogen-containing methanol-reformed gas (MRG) is effective to control the ignition timing in HCCI combustion engines. As both DME and MRG can be produced with an onboard methanol-reformer, utilizing the engine exhaust gas heat can be a technique to recover the waste heat. This paper newly applies ethanol to the HCCI system and investigates the characteristics of fuel reactivity control and waste heat recovery by onboard ethanol reforming for the HCCI engine system with waste heat recovery.v