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DOI: 10.5445/IR/1000075774

LT3 Drive: substitution of differentials in the drivetrain

Eckloff, Udo; Engelmann, Danilo; Müller, Werner

Abstract (englisch):
The basic principle of the LT3 drive system is a planetary gearing with a rotatable ring gear. Rolling piston cylinders enable this rotation by acting on the cam disk shaped outside of the ring gear which fix or loosen the ring gear accordingly.
By fixing the ring gear via the cylinders the gear ratio corresponds to the normal mechanical ratio of the gearing which is given by the combination of the planet gears and the ring gear. By loosening the ring gear completely there is no more power transmission to the carrier; hence, the carrier doesn’t rotate anymore. In between, the rotational speed can be adjusted continuously between 0 and the maximum speed within only a few milliseconds, “online”, as it were, depending on the compensatory need.
The technology was verified by the chair of Mobile Machines (Mobima) at Karlsruhe Institute of Technology. During the current second development process, the controlling of the system via high pressure components was elaborated. Furthermore, LT3 was designed for high torques up to 8,000 Nm. A feasibility study for heavy-duty vehicles was completed successfully in 2016.
The LT3 technology th ... mehr


Zugehörige Institution(en) am KIT Institut für Fahrzeugsystemtechnik (FAST)
Publikationstyp Proceedingsbeitrag
Jahr 2017
Sprache Englisch
Identifikator URN: urn:nbn:de:swb:90-757746
KITopen ID: 1000075774
Erschienen in EVS30 International Battery, Hybrid and Fuel Cell Electric Vehicle Symposium, Stuttgart, Germany, October 9 - 11, 2017
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