Fuel for premixed compression and auto-ignition type engine

摘要: PROBLEM TO BE SOLVED: To provide fuel for a premixed compression and auto-ignition type engine having an excellent ignition property in the engine, widening out put rotation zone as much possible, capable of achieving improvement thermal efficiency. SOLUTION: This comprises at least part fraction distillation temperature range from 25 to 210°C FT synthetic base material satisfies following (a) (d). The total contents hydrocarbons each ≤5 vol.% content is ≥30 vol.%. (b) Research octane value ≥60 <90. (c) HCCI index shown by formula ≥20 ≤55. Wherein, Index=MON-0.424xA-0.377xB-0.202xC-0.205xD---(1) [wherein, MON measured motor method value; A normal paraffin vol.%: B isoparaffin vol.%; C olefin D aromatic group vol.%]. (d) naphthene ≥0 ≤20 COPYRIGHT: (C)2008,JPO&INPIT