| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a biofuel deterioration determination device capable of detecting oxidation deterioration of biofuel. <P>SOLUTION: The biofuel deterioration determination device 1 is provided with; a cylinder pressure sensor 50 detecting cylinder pressure which is a pressure in a cylinder included in an engine capable of operating with at least a fuel containing biofuel; an ignition delay derivation part 89 deriving ignition delay at a time of combustion of the fuel based on the cylinder pressure detected by the cylinder pressure sensor 50; an ignition delay determination part 90 determining whether the ignition delay derived by the ignition delay derivation part 89 is shorter than a reference ignition delay which is a reference value of ignition delay in determination of deterioration of the biofuel by a prescribed time or longer; and a fuel deterioration-time control part 92 executing fuel deterioration time control which is a control when the bio-fuel deteriorates if the ignition delay determination part 90 determines that ignition delay derived by the ignition delay derivation part 89 is shorter than the reference ignition delay by the prescribed time or longer. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
