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Development of a Variable Displaceme...

Wang, Liping.

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Development of a Variable Displacement Electric Oil Pump.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Development of a Variable Displacement Electric Oil Pump./
Author:	Wang, Liping.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
Description:	191 p.
Notes:	Source: Dissertations Abstracts International, Volume: 82-06, Section: B.
Contained By:	Dissertations Abstracts International82-06B.
Subject:	Automotive engineering. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28148630
ISBN:	9798698550365

Development of a Variable Displacement Electric Oil Pump.
Wang, Liping.

Development of a Variable Displacement Electric Oil Pump. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 191 p.

Source: Dissertations Abstracts International, Volume: 82-06, Section: B.

Thesis (Ph.D.)--University of Toronto (Canada), 2020.

This item must not be sold to any third party vendors.

Power savings and CO2 reduction are prominent issues that continue to be a major focus in the automotive industry. Both in internal combustion engines and electric vehicles, it is important to reduce the power consumed by any of the auxiliary devices causing parasitic loss. An oil pump is one such device, used for lubrication, cooling and actuation purposes, and which consumes high power. In this work, a novel approach to reduce power consumption is proposed by regulating the displacement of the electric oil pump (EOP). This approach includes an advanced soft magnetic composite (SMC) motor, a Field Oriented Control (FOC) vector motor controller, a pump, and developing and testing a piezo motor used for pump displacement regulation in a closed-loop configuration.Variable displacement electric oil pumps (VDEOP) can potentially deliver flow rate to meet the oil requirements in the transmission and engine systems while enhancing system overall efficiency and overcoming the high torque at cold start. Piezo motors are well known for their excellent performance in terms of large load capability, fast response and accuracy. In VDEOP development, an actuation stroke of several millimeters is needed to regulate the displacement of the pump in real-time. For that purpose, a piezo motor is developed to generate such a stroke to regulate the pump's flow rate.Modern cars have 40 electric motors or more, with varying requirements. The novel SMC structure Brushless Direct Current (BLDC) motor is developed to drive the oil pump to meet different system requirements. The FOC algorithm controls the pressure, which provides signals for the closed-loop control of the piezo motor position.This dissertation introduces a novel design of a VDEOP with a compact structure based on a single piezo stack, which regulates the displacement of the pump. The simulation and experimental results indicate that the piezo motor can regulate the pump displacement based on achieving the stroke requirement while meeting the pump dynamic response requirements of minimum to maximum pump flow rates within 2 seconds.

ISBN: 9798698550365Subjects--Topical Terms:

2181195
Automotive engineering.
Subjects--Index Terms:

Displacement

Development of a Variable Displacement Electric Oil Pump.
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100 1 $a Wang, Liping. $3 1944182
245 1 0 $a Development of a Variable Displacement Electric Oil Pump.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2020
300 $a 191 p.
500 $a Source: Dissertations Abstracts International, Volume: 82-06, Section: B.
500 $a Advisor: Ben Mrad, Ridha .
502 $a Thesis (Ph.D.)--University of Toronto (Canada), 2020.
506 $a This item must not be sold to any third party vendors.
520 $a Power savings and CO2 reduction are prominent issues that continue to be a major focus in the automotive industry. Both in internal combustion engines and electric vehicles, it is important to reduce the power consumed by any of the auxiliary devices causing parasitic loss. An oil pump is one such device, used for lubrication, cooling and actuation purposes, and which consumes high power. In this work, a novel approach to reduce power consumption is proposed by regulating the displacement of the electric oil pump (EOP). This approach includes an advanced soft magnetic composite (SMC) motor, a Field Oriented Control (FOC) vector motor controller, a pump, and developing and testing a piezo motor used for pump displacement regulation in a closed-loop configuration.Variable displacement electric oil pumps (VDEOP) can potentially deliver flow rate to meet the oil requirements in the transmission and engine systems while enhancing system overall efficiency and overcoming the high torque at cold start. Piezo motors are well known for their excellent performance in terms of large load capability, fast response and accuracy. In VDEOP development, an actuation stroke of several millimeters is needed to regulate the displacement of the pump in real-time. For that purpose, a piezo motor is developed to generate such a stroke to regulate the pump's flow rate.Modern cars have 40 electric motors or more, with varying requirements. The novel SMC structure Brushless Direct Current (BLDC) motor is developed to drive the oil pump to meet different system requirements. The FOC algorithm controls the pressure, which provides signals for the closed-loop control of the piezo motor position.This dissertation introduces a novel design of a VDEOP with a compact structure based on a single piezo stack, which regulates the displacement of the pump. The simulation and experimental results indicate that the piezo motor can regulate the pump displacement based on achieving the stroke requirement while meeting the pump dynamic response requirements of minimum to maximum pump flow rates within 2 seconds.
590 $a School code: 0779.
650 4 $a Automotive engineering. $3 2181195
650 4 $a Industrial engineering. $3 526216
650 4 $a Mechanical engineering. $3 649730
653 $a Displacement
653 $a Electric
653 $a Oil
653 $a Pump
653 $a Variable
690 $a 0540
690 $a 0548
690 $a 0546
710 2 $a University of Toronto (Canada). $b Mechanical and Industrial Engineering. $3 2100959
773 0 $t Dissertations Abstracts International $g 82-06B.
790 $a 0779
791 $a Ph.D.
792 $a 2020
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28148630