CONTROLLER FOR AUTOMATIC TRANSMISSION

When a neutral control is executed in an automatic transmission 3 that includes a first clutch that is engaged when forward movement starts, a brake that is engaged along with the first clutch in a second speed, and a second clutch that is engaged along with the first clutch in a third speed, partic...

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Bibliographische Detailangaben
Hauptverfasser:	TSUTSUI, HIROSHI, OKUMOTO, GEN, OKADO, RYUJI, TOMIDA, HIDEKI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	When a neutral control is executed in an automatic transmission 3 that includes a first clutch that is engaged when forward movement starts, a brake that is engaged along with the first clutch in a second speed, and a second clutch that is engaged along with the first clutch in a third speed, particularly when it is determined that a road is flat, the third speed state is implemented by the second clutch, without a hill hold being executed by the brake. While the neutral control is in effect, the brake does not make rotating parts of a speed change mechanism stationary in relation to a transmission case, so an idle vibration of the engine is prevented from being transmitted from the speed change mechanism. Furthermore, a gear ratio of the automatic speed change mechanism 5 increases, so amplification of the idle vibration is low, mitigating the vibration that is transmitted to a driving wheel.