Homogeneous Charge Compression Ignition (HCCI) combustion is being considered as an alternative to conventional engine combustion systems due to its high efficiency and low engine-out emissions. To prepare a homogeneous mixture for diesel HCCI combustion, two types of low pressure (5MPa~20MPa) injectors were considered: a swirl injector and a multi-hole injector. A modified version of the KIVA-...

IJSER © 2013 http://www.ijser.org Abstract: The Homogeneous Charge Compression Ignition Engine, HCCI, has the potential to combine the best of the Spark. Ignition and Compression Ignition Engines. With high octane number fuel the engine operates with high compression ratio and lean mixtures giving CI engine equivalent fuel consumption or better. Due to premixed charge without rich or stoichiome...

Lean fuel/air mixtures with various fuel/fuel ratios between methane and n-butane were supplied to a premixed compression-ignition engine (i.e. homogeneous charge compression ignition engine, HCCI) with or without supplementary gaseous formaldehyde induction as an ignition controlling additive. In the no additive case the methane and butane function as the two fuels in the high/low-octane two-f...