CONTROL APPARATUS FOR AUTOMATIC TRANSMISSION, AND CONTROL METHOD FOR AUTOMATIC TRANSMISSION

A control apparatus for an automatic transmission having a rotation transmission mechanism for transmitting rotation of a prime mover mounted on a vehicle to a speed change mechanism, and an input clutch for controlling connection/disconnection of the transmitted rotation. The control apparatus incl...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OKUMOTO GEN, NISHIKAWA MASAHIKO, TSUKAMOTO YASUO, TOMIDA HIDEKI
Format:	Patent
Sprache:	eng
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:	A control apparatus for an automatic transmission having a rotation transmission mechanism for transmitting rotation of a prime mover mounted on a vehicle to a speed change mechanism, and an input clutch for controlling connection/disconnection of the transmitted rotation. The control apparatus includes a control portion that performs a neutral control including a release control that reduces rotation transmission efficiency, and an in-neutral control so as to maintain rotation efficiency. During the in-neutral control, a check control is performed that makes the fluid pressure relative to the input clutch fluctuate, and when determining as a result of the check control that the rotation transmission efficiency is in a predetermined low efficiency state, then reducing the fluid pressure relative to the input clutch by a set pressure, and thereafter maintaining the fluid pressure constant.