Tandem-System und Verfahren zum Starten eines Motors mit zwei Spannungen

A dual voltage tandem engine start system provides a method for high rotational speed, low emissions, heat-engine start-ups in a hybrid electric vehicle. The system also provides a reliable backup system that can be jumpstarted in an emergency should part of the vehicle's electrical system fail...

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Bibliographische Detailangaben
Hauptverfasser:	TAMAI, GORO, HOANG, TONY T
Format:	Patent
Sprache:	ger
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 BLASTING COMBUSTION ENGINES 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 HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INSTRUMENTATION OR DASHBOARDS FOR VEHICLES LIGHTING MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES MECHANICAL ENGINEERING PERFORMING OPERATIONS ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDEDFOR STARTING OF COMBUSTION ENGINES TRANSPORTING VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A dual voltage tandem engine start system provides a method for high rotational speed, low emissions, heat-engine start-ups in a hybrid electric vehicle. The system also provides a reliable backup system that can be jumpstarted in an emergency should part of the vehicle's electrical system fail. At start-up, a conventional low voltage starter motor (typically 12-volt) begins turning the heat engine up to a predetermined initial engine RPM. When this RPM is reached, a higher voltage motor/generator, in tandem with the low voltage starter motor, also begins turning the heat engine. Once a second, predetermined heat engine RPM is reached, the low voltage starter motor stops turning the engine, leaving the motor/generator to turn the heat engine to a final engine RPM where it begins fueling and combustion starts. This final engine RPM is sufficiently high to allow a low engine emission start once fueling begins.