In order to estimate the cetane number of a fuel, fuel injection is executed by controlling the driving of a fuel injection valve by a prescribed amount. The amount of change in the rotation of a diesel engine generated in response to the fuel injection is...

During partial/low load combined adjustment of a pump piston (5) in an injection pump (2) generates high injection pressure at an injection nozzle (4) set in a crank angle range of -20 degrees to -10 degrees before the top dead center of an engine's piston...