Drive device for vehicle

A drive device for a vehicle, which is capable of improving reliability of an in-gear operation for switching a speed position to an in-gear state while ensuring the degree of freedom in design of the drive device and realizing reduction of manufacturing costs thereof. When a transmission condition...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YAMAMOTO KAZUHISA, ISHII SHINSUKE
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL INSTRUMENTATION OR DASHBOARDS FOR VEHICLES MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES PERFORMING OPERATIONS ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	A drive device for a vehicle, which is capable of improving reliability of an in-gear operation for switching a speed position to an in-gear state while ensuring the degree of freedom in design of the drive device and realizing reduction of manufacturing costs thereof. When a transmission condition for transmitting motive power of the engine to front wheels via a first-speed forward position is satisfied, the ECU controls a first speed synchronization mechanism such that the first-speed forward position is switched to the in-gear state. At this time, if a condition of output shaft rotational speed predetermined detection lower limit is satisfied, the ECU controls the rotational speed of the front motor such that a ring gear speed is reduced, whereas if the condition is not satisfied, the ECU controls the same to a predetermined synchronization assist value for suppressing the rotational speed difference.