
2016-02-10 | 000-006-614 DE-DE
SCHAEFFLER AG, HERZOGENAURACH
Variable Ventiltriebe von Schaeffler
Meilenstein: Schaeffler produziert das einmillionste UniAir System im nordamerikanischen Werk in Cheraw
Mit der Serieneinf hrung des weltweit ersten vollvariablen elektrohydraulischen Ventilsteuerungssystems UniAir hat Schaeffler 2009 Ma st be f r die Technik umweltfreundlicher und zugleich dynamischer Motorentechnologien gesetzt. Gleichzeitig l utete das Unternehmen damit ein neues Zeitalter in Sachen Ventilsteuerung ein. Im nordamerikanischen Werk Cheraw (South Carolina) wurde nun das einmillionste UniAir-System gefertigt.
Das weltweit erste vollvariable elektrohydraulische Ventilsteuerungssystem kommt bislang in Fahrzeugen der Marken Alfa Romeo, Fiat, Chrysler und Jeep zum Einsatz. Weitere werden in absehbarer Zeit folgen. Zur Erfolgsgeschichte der innovativen UniAir-Technologie geh rt auch die Auszeichnung mit dem renommierten Automotive News PACE Award im Jahr 2012.
UniAir steuert die Motorventile bedarfsgerecht und erm glicht eine nahezu beliebige Variation des Ventilhubs. Durch diese Technologie lassen sich erhebliche Verbrauchs- und Emissionsreduzierungen ebenso darstellen, wie auch eine deutliche Verbesserung der Drehmomentverl ufe. UniAir vergr ert die M glichkeiten des situationsbedingten und bedarfsgerechten Motorbetriebs. So lassen sich beispielsweise auch moderne Verbrennungsverfahren wie Miller und Atkinson realisieren. Und eine Zylinderabschaltung ist ebenfalls ohne konstruktiven Mehraufwand m glich. Damit k nnen Dreizylindermotoren beispielsweise mit einer rollierenden Zylinderabschaltung betrieben werden. Dabei wird reihum jeder einzelne Zylinder stillgelegt. Das hat den Vorteil, dass die deaktivierten Zylinder nicht ausk hlen und so das Optimum in Sachen Effizienz und Emissionen erzielt werden kann. Bei einem Dreizylinder f hrt die intelligente Abschaltl sung quasi zu einem spritsparenden 1,5-Zylinder-Betrieb . Schwingungstechnisch hilft dabei auch das Schaeffler-Know-how aus dem Getriebebereich, mit dem auch bei dieser einzigartigen Betriebsart ein hoher Fahrkomfort gew hrleistet ist.
Wir entwickeln die UniAir-Technologie st ndig weiter, um den steigenden Anforderungen unserer Kunden und des weltweiten Automobilmarkts gerecht zu werden , erkl rt Prof. Peter Pleus, CEO Automotive Schaeffler AG. Seit der Entwicklung des Systems ist das Interesse am Markt stetig gestiegen. Bereits in absehbarer Zeit werden weitere Automobilhersteller ebenfalls mit dieser innovativen Technologie aufwarten. Der Erfolg ist das Ergebnis unserer herausragenden Entwicklungs- und Produktionskompetenz sowie des gro en Engagements unserer Mitarbeiter.
Variable Ventiltriebe von Schaeffler
Von Phasenverstellern ber schaltbare Schlepphebel bis hin zum vollvariablen Ventilsteuersystem UniAir, Schaeffler bietet einen umfassenden Baukasten f r die Variabilit t im Ventiltrieb. So lassen sich - ganz nach den Anforderungen der Kunden und M rkte - ma geschneiderte Betriebsstrategien, wie zum Beispiel die Zylinderabschaltung oder spezielle Ventilhubverl ufe, darstellen. Das optimale Zusammenspiel der Einzelkomponenten ist k nftig ein entscheidender Faktor zur Verbrauchsabsenkung. Hier bietet Schaeffler durch sein einzigartiges Know-how und die bergreifende Zusammenarbeit der Fachbereiche Motorsysteme, Getriebesysteme, Chassis und Elektromobilit t der Automobilindustrie Vorteile, wie kaum ein anderer Zulieferer.
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