SEIZURE SIGN DETERMINATION DEVICE AND SEIZURE SIGN DETERMINATION METHOD

摘要

PROBLEM TO BE SOLVED: To detect the seizure of a bearing of an internal combustion engine in advance.SOLUTION: A control device 100 for determining a sign of the seizure of a crank bearing 22 arranged at an engine 1 having a plurality of cylinders 10a to 10d from which fuel is injected comprises: a correction part 122 for correcting an injection amount of fuel to each cylinder on the basis of a rotation variation amount of the cylinder; a comparison part 123 for comparing a correction degree of the injection amount by a correction part 122 of the cylinder; and a determination part 124 for determining that there is a sign of seizure at the crank bearing 22 when it is detected that there exists a cylinder whose correction degree is different from that of the other cylinder by a prescribed value or larger as a comparison result of the comparison part 123.SELECTED DRAWING: Figure 2