| 摘要 |
PCT No. PCT/SE93/00983 Sec. 371 Date May 17, 1995 Sec. 102(e) Date May 17, 1995 PCT Filed Nov. 17, 1993 PCT Pub. No. WO94/11627 PCT Pub. Date May 26, 1994.A process for indicating abnormal conditions in a motor vehicle by inducing misfires through the absence of fuel supply. The fuel supply is interrupted cylinder by cylinder in such a manner that the supply is interrupted during a proportion of the total number of injection cycles of the respective cylinders during a first fuel supply sequence, after which the next cylinder interrupts the fuel supply for a proportion of the total number of injection cycles of that cylinder during a subsequent fuel supply sequence. The interruptions of the fuel supply take place preferably as a predetermined number of injection cycles during a fuel supply sequence, and when each injection supply sequence is of equal length or includes a certain number of injection cycles. This can give rise to a distinct signal quality from the engine, in the form of irregular, uncomfortable engine running, while each individual cylinder is subjected to the least possible disturbance, apart from an ideal operating condition. High cylinder temperature can be maintained for complete combustion and a low proportion of uncombusted fuel reaches the catalytic converter, which reduces the emissions from the engine. |
