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A glow-plug assisted procedure is examined herewith to try to establish easy start and warm-up processes of the premixed-compression-ignition (i.e. homogeneous charge compression ignition, HCCI) natural-gas engines easy. A confirmation experiment is shown using a single cylinder engine and the natural gas/air mixture with an equivalence ratio of 0.6. The wall temperature of the combustion chamber...
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-fuel...
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