The vehicle will generate an amount of current while the electric just starting to regeneratively brake. In order avoid impact high on traction battery, a novel electrohydraulic hybrid has been proposed. main power source is supplied by drive system, and hydraulic system performs auxiliary that fully exerts advantages system. A proper regenerative braking control strategy presented, parameters ...

In order to improve the fault alarm effect on power performance of hydraulic hybrid electric vehicles (HEV), this paper proposes a method for vehicle based technology, builds system model, uses technology extract characteristic signals key components, support vector mechanisms build classifier, and obtains results dynamic technology. The show that proposed can real-time diagnosis engine faults ...

Trees face the dilemma that achieving high plant productivity is accompanied by a risk of drought-induced hydraulic failure due to a trade-off in the trees' vascular system between hydraulic efficiency and safety. By investigating the xylem anatomy of branches and coarse roots, and measuring branch axial hydraulic conductivity and vulnerability to cavitation in 4-year-old field-grown aspen plan...

Hydraulic fracturing is an important method of reservoir stimulation in the exploitation of geothermal resources, and conventional and unconventional oil and gas resources. In this article, hydraulic fracturing experiments with shale, sandstone cores (from southern Sichuan Basin), and granite cores (from Inner Mongolia) were conducted to investigate the different hydraulic fracture extension pa...