Direct Driven Hydraulic Drive: Effect of Oil on Efficiency in Sub-Zero Conditions

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Direct Driven Hydraulic Drive : Effect of Oil on Efficiency in Sub-Zero Conditions. / Minav, Tatiana; Heikkinen, Jani; Schimmel, Thomas; Pietola, Matti.

julkaisussa: Energies, Vuosikerta 12, Nro 2, 219, 11.01.2019.

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Bibtex - Lataa

@article{5ddc87026e0c4981bc103eabfc3dfea0,
title = "Direct Driven Hydraulic Drive: Effect of Oil on Efficiency in Sub-Zero Conditions",
abstract = "Direct driven hydraulic drives (DDH) have the advantages of compact high power density in hydraulic systems and flexible control of electric motors. These advantages can benefit non-road mobile machinery (NRMM) applications. However, maintaining high efficiency while working in sub-zero conditions with NRMM is challenging. Therefore, this paper investigates the effect of hydraulic oil on the efficiency of a DDH in a cold environment for an NRMM application. In the DDH setup, the speed and position control of a double-acting cylinder was implemented directly with an electric motor drive in a closed-loop system without the conventional control valves. Efficiency measurements of the DDH setup with two oils (conventional multi-grade and high-performance) were conducted under different operating conditions (speed and payload) and environmental conditions (temperature in °C). The paper provides an evaluation of the electro-hydraulic system and a discussion on the usage of hydraulic oil by non-road mobile working machines in sub-zero conditions. An experimental investigation demonstrated an improvement in efficiency of 5{\%}-unit at 22 °C, from 2{\%}-unit to 5{\%}-unit at 3 °C, and of almost a 10{\%}-unit at temperatures below zero (−10 °C) by changing oil",
keywords = "hydraulic actuator, hydraulic drives, electric drives, efficiency, losses, zonal hydraulics, direct driven hydraulics, non-road mobile working machines, low temperature, high-performance oil, Hydraulic drives, Zonal hydraulics, Hydraulic actuator, Direct driven hydraulics, Losses, Electric drives, Efficiency, High-performance oil, Non-road mobile working machines, Low temperature",
author = "Tatiana Minav and Jani Heikkinen and Thomas Schimmel and Matti Pietola",
year = "2019",
month = "1",
day = "11",
doi = "10.3390/en12020219",
language = "English",
volume = "12",
journal = "Energies",
issn = "1996-1073",
publisher = "MDPI AG",
number = "2",

}

RIS - Lataa

TY - JOUR

T1 - Direct Driven Hydraulic Drive

T2 - Effect of Oil on Efficiency in Sub-Zero Conditions

AU - Minav, Tatiana

AU - Heikkinen, Jani

AU - Schimmel, Thomas

AU - Pietola, Matti

PY - 2019/1/11

Y1 - 2019/1/11

N2 - Direct driven hydraulic drives (DDH) have the advantages of compact high power density in hydraulic systems and flexible control of electric motors. These advantages can benefit non-road mobile machinery (NRMM) applications. However, maintaining high efficiency while working in sub-zero conditions with NRMM is challenging. Therefore, this paper investigates the effect of hydraulic oil on the efficiency of a DDH in a cold environment for an NRMM application. In the DDH setup, the speed and position control of a double-acting cylinder was implemented directly with an electric motor drive in a closed-loop system without the conventional control valves. Efficiency measurements of the DDH setup with two oils (conventional multi-grade and high-performance) were conducted under different operating conditions (speed and payload) and environmental conditions (temperature in °C). The paper provides an evaluation of the electro-hydraulic system and a discussion on the usage of hydraulic oil by non-road mobile working machines in sub-zero conditions. An experimental investigation demonstrated an improvement in efficiency of 5%-unit at 22 °C, from 2%-unit to 5%-unit at 3 °C, and of almost a 10%-unit at temperatures below zero (−10 °C) by changing oil

AB - Direct driven hydraulic drives (DDH) have the advantages of compact high power density in hydraulic systems and flexible control of electric motors. These advantages can benefit non-road mobile machinery (NRMM) applications. However, maintaining high efficiency while working in sub-zero conditions with NRMM is challenging. Therefore, this paper investigates the effect of hydraulic oil on the efficiency of a DDH in a cold environment for an NRMM application. In the DDH setup, the speed and position control of a double-acting cylinder was implemented directly with an electric motor drive in a closed-loop system without the conventional control valves. Efficiency measurements of the DDH setup with two oils (conventional multi-grade and high-performance) were conducted under different operating conditions (speed and payload) and environmental conditions (temperature in °C). The paper provides an evaluation of the electro-hydraulic system and a discussion on the usage of hydraulic oil by non-road mobile working machines in sub-zero conditions. An experimental investigation demonstrated an improvement in efficiency of 5%-unit at 22 °C, from 2%-unit to 5%-unit at 3 °C, and of almost a 10%-unit at temperatures below zero (−10 °C) by changing oil

KW - hydraulic actuator

KW - hydraulic drives

KW - electric drives

KW - efficiency

KW - losses

KW - zonal hydraulics

KW - direct driven hydraulics

KW - non-road mobile working machines

KW - low temperature

KW - high-performance oil

KW - Hydraulic drives

KW - Zonal hydraulics

KW - Hydraulic actuator

KW - Direct driven hydraulics

KW - Losses

KW - Electric drives

KW - Efficiency

KW - High-performance oil

KW - Non-road mobile working machines

KW - Low temperature

UR - https://www.mdpi.com/1996-1073/12/2/219

UR - http://www.scopus.com/inward/record.url?scp=85060533610&partnerID=8YFLogxK

U2 - 10.3390/en12020219

DO - 10.3390/en12020219

M3 - Article

VL - 12

JO - Energies

JF - Energies

SN - 1996-1073

IS - 2

M1 - 219

ER -

ID: 31362886