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Electric drive axle systems in new energy vehicles
Frontiers in Mechanical EngineeringThis study set out to benchmark how far recent advances in motor–gearbox integration, thermal management and control algorithms could jointly raise the efficiency of electric-drive axles for new-energy vehicles. The different schools of thought regarding
Yingshuai Liu +3 more
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Dynamics of a split torque helicopter transmission [PDF]
, 1992 A high reduction ratio split torque gear train has been proposed as an alternative to a planetary configuration for the final stage of a helicopter transmission. A split torque design allows a high ratio of power-to-weight for the transmission.
Krantz, Timothy, Rashidi, Majid
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Hybrid geared traction transmissions [PDF]
, 1983 The basic configuration of geared traction drives, geometric and structural factors to be considered in their construction, and current work on hybrid helicopter transmissions rated at 500 and 3000 hp are ...
Nasvytis, A. L., White, G.
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Dynamics of early planetary gear trains [PDF]
A method to analyze the static and dynamic loads in a planetary gear train was developed. A variable-variable mesh stiffness (VVMS) model was used to simulate the external and internal spur gear mesh behavior, and an equivalent conventional gear train ...
August, R. +3 more
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A Study on the Integration of a High-Speed Flywheel as an Energy Storage Device in Hybrid Vehicles [PDF]
, 2010 The last couple of decades have seen the rise of the hybrid electric vehicle as a compromise between the outstanding specific energy of petrol fuels and its low-cost technology, and the zero tail-gate emissions of the electric vehicle.
Martinez-Gonzalez, Pablo +1 more
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Redundant motor drive system [PDF]
, 1980 A drive system characterized by a base supporting a pair of pillars arranged in spaced parallelism, a shaft extended between and supported by the pillars for rotation about the longitudinal axis thereof, a worm gear affixed to the shaft and supported in ...
Calvert, J. A.
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Study on order analysis for condition monitoring wind turbine gearbox [PDF]
, 2014 A complex 3-stage gearbox design, in which one planetary gear set at first stage and two sets of parallel gears at second and third stage, is conventionally applied on the large wind turbine configuration with Doubly Fed Induction Generator.
Feng, Yanhui +4 more
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Reliability model for planetary gear [PDF]
A reliability model is presented for planetary gear trains in which the ring gear is fixed, the Sun gear is the input, and the planet arm is the output.
Coy, J. J., Paridon, C. A., Savage, M.
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Vibration in Planetary Gear Systems with Unequal Planet Stiffnesses [PDF]
An algorithm suitable for a minicomputer was developed for finding the natural frequencies and mode shapes of a planetary gear system which has unequal stiffnesses between the Sun/planet and planet/ring gear meshes.
August, R., Frater, J. L., Oswald, F. B.
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Gearing technology in its modern form has a history of only 100 years. However, the earliest form of gearing can probably be traced back to fourth century B.C. Greece. Current gear practice and recent advances in the technology are drawn together.
Coy, J. J. +2 more
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