公开(公告)号：JP2007145220A

公开(公告)日：2007-06-14

申请号：JP2005343850

申请日：2005-11-29

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： YAMAGUCHI KATSUHIKO ,  HARADA OSAMU ,  KOBAYASHI YUKIO ,  YASUTOMI SHUICHI ,  SAITO MASARU

IPC: B60W10/06 ,  B60K6/44 ,  B60K6/445 ,  B60K6/448 ,  B60W10/08 ,  B60W20/00 ,  F02D29/02 ,  F02D45/00 ,  F02P5/15

CPC classification number: Y02T10/46 ,  Y02T10/6286

Abstract: PROBLEM TO BE SOLVED: To execute idle stabilization correction of an internal combustion engine without risk of stalling the internal combustion engine. SOLUTION: An engine ECU sets time constant τ corresponding to elapsed time t to a value smaller than time constant τc after time tc (S310), and calculates idle stabilization reference Nref according to the equation of Nref=previous Nref+(Ne-previous Nref)/τ (S320). Until the time tc is reached or until idle stabilization correction is started, steps 300-330 are repeated. According to this, the idle stabilization reference Nref rapidly gets close to rotating speed Ne of an engine 22. When the time tc is reached a difference ΔN is calculated by subtracting the idle stabilization reference Nref from the rotating speed Ne of the engine 22 (S340), an ignition timing correction quantity (a) corresponding to the difference Δ N (S350) is determined, and the ignition timing is corrected based on the ignition timing correction quantity (a) (S360). COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：执行内燃机的空转稳定性校正，而不会使内燃机停止的风险。 发动机ECU将经过时间t对应的时间常数τ设定为小于时间tc之后的时间常数τc的值（S310），并根据Nref =先前Nref +（Ne-Nref）的公式计算怠速稳定参考Nref， 以前的Nref）/τ（S320）。 直到达到时间tc或直到空转稳定性校正开始，重复步骤300-330。 据此，怠速稳定基准Nref迅速地接近发动机22的转速Ne。当达到时间tc时，通过从发动机22的转速Ne减去怠速稳定基准Nref来计算差值ΔN（S340 ），确定与差ΔN（S350）对应的点火正时校正量（a），并根据点火正时校正量（a）修正点火正时（S360）。 版权所有（C）2007，JPO＆INPIT