CONTROLLER FOR AUTOMATIC TRANSMISSION AND CONTROL METHOD FOR AUTOMATIC TRANSMISSION

An ECU starts a release control that reduces a first hydraulic oil pressure Pc1 supplied to a first clutch when a vehicle stops and a neutral control start condition is met (first timing t11). After termination of the release control, the ECU performs an in-neutral control for bringing the first clu...

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Bibliographische Detailangaben
Hauptverfasser:	TSUKAMOTO, YASUO, OKUMOTO, GEN, TOMIDA, HIDEKI, NISHIKAWA, MASAHIKO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LIGHTING MECHANICAL ENGINEERING TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	An ECU starts a release control that reduces a first hydraulic oil pressure Pc1 supplied to a first clutch when a vehicle stops and a neutral control start condition is met (first timing t11). After termination of the release control, the ECU performs an in-neutral control for bringing the first clutch into a condition close to a stroke-end condition. That is, the ECU performs a check control that causes the first hydraulic oil pressure Pc1 to microscopically fluctuate only three times and, if the first clutch is determined to be in a stroke near-end condition, reduces the first hydraulic oil pressure Pc1 supplied to the first clutch by an amount of reduction in pressure Pdec, and keeps the pressure constant thereafter (fifth timing t15).