Skip to main content

The Effectiveness of Esters in Cooling and Lubricating Transmission Systems in Electric Vehicles-Dielectric Fluids


Key facts

Type of research degree
Application deadline
Wednesday 30 September 2020
Project start date
Thursday 1 October 2020
Country eligibility
UK and EU
Source of funding
Research council
Dr Shahriar Kosarieh and Professor Anne Neville
School of Mechanical Engineering
Research groups/institutes
Institute of Functional Surfaces
<h2 class="heading hide-accessible">Summary</h2>

Energy conservation and emissions reduction have become increasingly significant for automobiles due to high energy demand, fuel economy and environmental concerns. Hybrid Electric Vehicle (HEV) technology and fully Electric Vehicles (EV) are one of the most promising solutions offering a much lower fuel consumption and considerably low emissions. Emerging new driveline configurations bring new challenges in developments of HEV/EV fluids. Many different configurations have been conceived which use different methods of cooling and lubrication. Not only are these fluids essentials for lubricating and cooling the new types of powertrains and transmissions, but they are also needed to regulate the temperature of the vehicle's battery and power electronics. As hybrids and EVs become increasingly powerful and their battery ranges and charging speeds improve, standard fluids are unable to keep up in terms of robustness, heat resistance and cooling capacity. These conditions could be controlled by base fluid or advanced additive technology.

<h2 class="heading hide-accessible">Full description</h2>

<p>New technical constraints for the electrification of vehicles require the development of new fluids with long lasting dielectric properties in harsh operating conditions such as high temperatures, oxidation, humidity and particle abrasion. The fluid should also be compatible with components of the electric/hybrid vehicles such as copper as key component in electrical wiring. In addition, the fluid needs to have an excellent thermal properties to cool the high heat generation in electric motor often exceeding 180&deg;C. Last but not least, the fluid needs to fulfil the standard lubrication properties to reduce friction, wear, oxidation and corrosion in mechanical parts. &nbsp;</p> <p>The overall aim of the project is to investigate the thermal properties of esters and how they could be used to both cool and lubricate areas such as gears and electric motors used in hybrid and fully electric vehicles. It is also possible that they could be used to cool sensitive components such as electronics, regulating temperature and allowing better efficiency.</p> <p>The project will be carried out in collaboration with Croda and will be conducted at the Institute of Functional Surfaces (IFS), School of Mechanical Engineering, University of Leeds.</p> <p>The specific objectives are:<br /> &bull;&nbsp;&nbsp; &nbsp;To assess thermal properties of esters by rigorous numerical and experimental studies.&nbsp;<br /> &bull;&nbsp;&nbsp; &nbsp;To investigate the tribological and tribochemical performance of esters in lubricating electric transmission systems.&nbsp;<br /> &nbsp;</p>

<h2 class="heading">How to apply</h2>

<p>Formal applications for research degree study should be made online through the&nbsp;<a href="">University&#39;s website</a>. Please state clearly in the research information section&nbsp;that the research degree you wish to be considered for is &lsquo;The Effectiveness of Esters in Cooling and Lubricating Transmission Systems in Electric Vehicles-Dielectric Fluids&rsquo; as well as&nbsp;<a href="">Dr Shahriar Kosarieh</a>&nbsp;as your proposed supervisor.</p> <p>If English is not your first language, you must provide evidence that you meet the University&#39;s minimum English language requirements (below).</p> <p><em>We welcome applications from all suitably-qualified candidates, but UK black and minority ethnic (BME) researchers are currently under-represented in our Postgraduate Research community, and we would therefore particularly encourage applications from UK BME candidates. All scholarships will be awarded on the basis of merit.</em></p>

<h2 class="heading heading--sm">Entry requirements</h2>

Applicants to research degree programmes should normally have at least a first class or an upper second class British Bachelors Honours degree (or equivalent) in an appropriate discipline. The criteria for entry for some research degrees may be higher, for example, several faculties, also require a Masters degree. Applicants are advised to check with the relevant School prior to making an application. Applicants who are uncertain about the requirements for a particular research degree are advised to contact the School or Graduate School prior to making an application.

<h2 class="heading heading--sm">English language requirements</h2>

The minimum English language entry requirement for research postgraduate research study is an IELTS of 6.0 overall with at least 5.5 in each component (reading, writing, listening and speaking) or equivalent. The test must be dated within two years of the start date of the course in order to be valid.

<h2 class="heading">Funding on offer</h2>

<p>UK/EU &ndash; Engineering &amp; Physical Sciences Research Council Studentships paying academic fees (&pound;4,600 in Session 2020/21), together with a maintenance grant paid at standard Research Council rates (&pound;15,285 for Session 2020/21) for 3.5 years. UK applicants will be eligible for a full award paying tuition fees and maintenance. European Union applicants will be eligible for an award paying tuition fees only, except in exceptional circumstances, or where residency has been established for more than 3 years prior to the start of the course. Funding is awarded on a competitive basis.</p>

<h2 class="heading">Contact details</h2>

<p>For further information regarding this&nbsp;project, please contact Dr Shahriar Kosarieh,<br /> e:&nbsp;<a href=""></a></p> <p>For further information regarding the application procedure, please contact Doctoral College Admissions,<br /> e:&nbsp;<a href=""></a>, t: +44 (0)113 343 5057.</p>

<h3 class="heading heading--sm">Linked funding opportunities</h3>
<h3 class="heading heading--sm">Linked research areas</h3>