نتایج جستجو برای: drive cycle

تعداد نتایج: 352598  

Journal: :Energies 2022

This paper proposes an approach for the accurate and efficient parameter identification of lithium-ion battery packs using only drive cycle data obtained from hybrid or electric vehicles. The was experimentally validated collected a BMW i8 vehicle. dual polarization model used, new open circuit voltage equation proposed based on simplification combined model, with aim reducing number parameters...

2001
Anita M. Flynn Seth R. Sanders

This work investigates fundamental limits on electromechanical energy conversion capacity of piezoelectric transformers by considering a work cycle analysis. Fundamental limitations in a lossless piezoelectric transformer are imposed by maximum electric field strength, maximum surface charge density, maximum stress, and maximum strain. For the lossless case, our analysis indicates that the mech...

Journal: :Cell 2009
Carla Klattenhoff Hualin Xi Chengjian Li Soohyun Lee Jia Xu Jaspreet S. Khurana Fan Zhang Nadine Schultz Birgit S. Koppetsch Anetta Nowosielska Herve Seitz Phillip D. Zamore Zhiping Weng William E. Theurkauf

Piwi-interacting RNAs (piRNAs) silence transposons and maintain genome integrity during germline development. In Drosophila, transposon-rich heterochromatic clusters encode piRNAs either on both genomic strands (dual-strand clusters) or predominantly one genomic strand (uni-strand clusters). Primary piRNAs derived from these clusters are proposed to drive a ping-pong amplification cycle catalyz...

2009
Tong Qiang

An improved transformer coupled gate driver scheme for high speed switching applications in power supply or motor drive is proposed in this paper. It improves the deficiencies caused by the conventional transformer coupled gate driver scheme, such as oscillation of the output PWM signal that will make MOSFET improper turn-on, when the duty cycle of input PWM signal reduces from large value to s...

2010
Perry Y. Li Felicitas Mensing

Hydro-mechanical transmission (HMT) based hybrid hydraulic vehicle architecture is potentially more efficient than other architectures because: 1) it uses the efficient mechanical transmission for partial power transfer, 2) it allows the engine to operate at its most efficient point. The input coupled power split hybrid vehicle being developed is one such example. The increase in degrees of fre...

2015
Jessica L. Bird Dwight Mazmanian

The association between hormones and binge eating was assessed by Klump and colleagues in a community sample [4]. A small group of normal BMI college women provided 65 days of saliva samples for estradiol and progesterone assay, as well as mood and binge-eating scale scores. After controlling for BMI and negative affect, increases in binge eating across the menstrual cycle were significantly co...

Journal: :Frontiers in Mechanical Engineering 2021

Despite the high thermal efficiency achieved by modern heavy-duty diesel engines, over 40% of energy contained in fuel is wasted as heat either cooling or exhaust gases. By recovering part energy, overall engine increases and pollutant emissions are reduced. Organic Rankine cycle (ORC) systems considered a favourable candidate technology to recover gas waste heat, because their simplicity small...

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