Post-start controller for diesel engine
AssigneeFuji Jukogyo Kabushiki Kaisha
InventorRyota Hosaka
Life of this patent
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Abstract
A glow power selected from a map based on a coolant temperature and an intake air temperature is applied to a glow plug provided at a combustion cylinder after an engine starts. Air-fuel mixture is heated and combusted, and then a rotation variation is calculated from a difference between a maximum rotating speed and a minimum rotating speed of the combustion cylinder. If the rotation variation is outside an allowable range with reference to an average rotation variation for four cylinders, the glow power corresponding to the combustion cylinder is corrected by a correction value set based on the rotation variation, thereby equalizing rotation variations for all cylinders.
Claims8
A post-start controller for a diesel engine, comprising:
- a glow plug provided at each of individual cylinders of the engine;
- and
- power control means for applying power to the glow plug by a preset power after cranking of the engine is started,
- wherein the power control means includes
- rotation variation calculating means for calculating a rotation variation of each of the individual cylinders,
- rotation variation determining means for determining whether the rotation variation of each of the individual cylinders is within an allowable range, and
- power correcting means for correcting the preset power such that the rotation variation falls within the allowable range if the rotation variation determining means has determined that the rotation variation of any of the individual cylinders is outside the allowable range.
Dependencies are inferred from the claim text.