Hydraulic hybrid passenger vehicle: Fuel savings possibilities

Barbosa, Társis Prado; Silva, Leonardo Adolpho Rodrigues da; Pujatti, Fabrício José Pacheco; Gutiérrez, Juan Carlos Horta

doi:10.1080/15397734.2020.1714447

Cited by 18 publications

(9 citation statements)

References 29 publications

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“…To be considered viable, the PHEV configuration cannot generate more CO, NOx and HC emissions than the conventional vehicle. Moreover, the vehicle performance is evaluated as the correlation coefficient R calculated by the Equation (35) [30,63] in which the simulated speed profile V s is compared to the standard driving cycle V cs in discrete time steps of 0.1 s, and the analyzed PHEV must reach at least the same performance of the conventional vehicle R = 0.9997, using a standard gear shifting strategy proposed by its manufacturer [64].…”

Section: Problem Formulationmentioning

confidence: 99%

Design of an Aftermarket Hybridization Kit: Reducing Costs and Emissions Considering a Local Driving Cycle

et al. 2020

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For decades, drivers and fleet managers have been impacted by the instability of fuel prices, the need to save resources and the duty to meet and attain environmental regulations and certifications. Aiming to increase performance and efficiency and reduce emissions and mileage costs, plug-in electric vehicles (PHEVs) have been pointed out as a viable option, but there are gaps related to tools that could improve the numerous existing conventional vehicles. This study presents the design of an aftermarket hybridization kit that converts a vehicle originally driven by a combustion engine into a PHEV. To achieve this goal, an optimization was conducted with the objective of decreasing the cost (regarding fuel consumption and battery charging) to perform a local driving cycle, while attenuating the tailpipe emissions and reducing the battery mass. The torque curves of the electric motors, the battery capacity, the parameters for a gear shifting strategy and the parameters for a power split control were the design variables in the optimization process. This study used the Campinas driving cycle, which was experimentally obtained in a real-world driving scenario. The use of a local driving cycle to tune the design variables of an aftermarket optimization kit is important to achieve a customized product according to the selling location. Among the optimum solutions, the best trade-off configuration was able to decrease the mileage cost in 22.55%, and reduce the tailpipe emissions by 28.4% CO, 33.55% NOx and 19.11% HC, with the addition of a 137 kg battery.

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Section: Problem Formulationmentioning

confidence: 99%

Design of an Aftermarket Hybridization Kit: Reducing Costs and Emissions Considering a Local Driving Cycle

et al. 2020

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Section: Problem Formulationmentioning

confidence: 99%

“…Experimentally, nucleation particles downstream of a VPR with evaporation tube were measured from a heavy-duty vehicle equipped with SCR [62]. However, the size of the H 2 SO 4 nuclei (critical clusters) is approximately 1-1.5 nm and high concentrations of H 2 SO 4 are needed to grow them to 3 nm in diameter [63,64] [33].…”

Section: Evaporation Tubementioning

confidence: 99%

Future Powertrain Technologies

Rinderknecht¹,

Jardin²,

Eßer³

2020

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“…Pumps and compressors designed for the compression and displacement of lowcompressible liquids and gases are widely used as in traditional industries: power, oil and gas, transport [1] and aviation, as in new ones: measuring equipment [2], medical industry, etc. In general, from the point of liquid and gas mechanics, "liquid" as a term includes low-compressible (droplet) liquid and compressible liquid (gaseous).…”

Section: Introductionmentioning

confidence: 99%

Development and Research of Crosshead-Free Piston Hybrid Power Machine

et al. 2021

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This article considers the development and research of a new design of crosshead-free piston hybrid power machine. After verification of a system of simplifying assumptions based on the fundamental laws of energy, mass, and motion conservation, as well as using the equation of state, mathematical models of the work processes of the compressor section, pump section, and liquid flow in a groove seal have been developed. In accordance with the patent for the invention, a prototype of a crosshead-free piston hybrid power machine (PHPM) was developed; it was equipped with the necessary measuring equipment and a stand for studying the prototype. Using the developed mathematical model, the physical picture of the ongoing work processes in the compressor and pump sections is considered, taking into account their interaction through a groove seal. Using the developed plan, a set of experimental studies was carried out with the main operational parameters of the crosshead-free PHPM: operating processes, temperature of the cylinder–piston group and integral parameters (supply coefficient of the compressor section, volumetric efficiency of the pump section, etc.). As a result of numerical and experimental studies, it was determined that this PHPM design has better cooling of the compressor section (decrease in temperature of the valve plate is from 10 to 15 K; decrease in temperature of intake air is from 6 to 8 K, as well as there is increase in compressor and pump section efficiency up to 5%).

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Hydraulic hybrid passenger vehicle: Fuel savings possibilities

Cited by 18 publications

References 29 publications

Design of an Aftermarket Hybridization Kit: Reducing Costs and Emissions Considering a Local Driving Cycle

Design of an Aftermarket Hybridization Kit: Reducing Costs and Emissions Considering a Local Driving Cycle

Future Powertrain Technologies

Development and Research of Crosshead-Free Piston Hybrid Power Machine

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