| 摘要 |
PROBLEM TO BE SOLVED: To detect a cylinder with fuel injection failure, in an engine which may show a behavior where an engine speed is not always minimized after compression top dead center of a cylinder with fuel injection failure. SOLUTION: The engine 2 includes: an individual reference number-of-revolutions output means 30 for outputting the individual reference number of revolutions Nstdi of each cylinder corresponding to each injector 3 incident to fuel injection thereof; an engine speed sensor 6 for calculating the individual actual number of revolutions Ni of each cylinder corresponding to each injector 3 incident to fuel injection thereof; and fuel injection failure detection means for determining a cylinder temporarily determined as poor fuel injection as a cylinder of poor fuel injection when the plus and minus by a contrast arithmetic operation means 80 coincide entirely in each cylinder and the absolute value ¾ΔNi'¾ of the difference in number of revolutions at the time of forced stop means is entirely above the absolute value ¾ΔNi¾ of the difference in the number of revolutions at the time of temporary determination means. COPYRIGHT: (C)2009,JPO&INPIT |
