30 credits - Fuel impact on particulate formation and aftertreatment performance

<p><b>Introduction</b><br/> A thesis project at Scania is an excellent way of applying your knowledge to solve industrial challenges in the transportation sector and increasing your network for your future career. Many of our current employees started their careers with a thesis project at Scania. <br/>  <br/> <b>Background </b> <br/> Energy efficiency, alternative fuels, electrification, and smart and safe transports are Scania’s three pillars of sustainability. Diesel engines have the advantages of being highly efficient and easily adapted to different types of renewable fuels. This gives the diesel engine an important role in the transition to a low-carbon future. </p> <p><br/> However, particulate emissions are a drawback of diesel engines, since they can cause deteriorated air quality and health issues. Scania’s vehicles have a world-leading exhaust after treatment system that lowers emissions well below the strictest regulations. Nevertheless, at Scania we keep working to maintain our leadership and develop even better and more durable systems to meet future challenges. </p> <p><br/> The thesis is part of a research project, focusing on particulate emissions and particulate filters, led by Scania R&amp;D in cooperation with KTH Process Technology, an innovative company that produces lignin-based fuel from biomass, RenFuel, and one of the world’s largest catalyst suppliers, Johnson Matthey. </p> <p><br/> <b>Objective </b><br/> The objective of this project is to investigate how different fuels influence particulate formation and composition, and to analyze the resulting impacts and demands on the exhaust aftertreatment system.</p> <p><br/> <b>Job description</b><br/> This project delves into research on how different fuel types such as; diesel, biofuels, and hydrogen, affect particle emissions and, consequently, the performance of aftertreatment technologies. Each fuel type produces distinct particle compositions and chemical properties, which in turn influence how emissions behave within systems like diesel particulate filters (DPF). These variations impact crucial aspects of the aftertreatment process, including catalyst efficiency, filtration performance, and backpressure. Understanding these interactions is essential for optimizing aftertreatment technologies and developing cleaner, more efficient engine systems. The research will involve hands-on work using a state-of-the-art test rig designed for accelerated soot and ash loading, complemented by advanced measurement equipment. Additionally, you'll have access to a broad instrument park, offering a comprehensive range of tools for in-depth analysis and testing.</p> <p> </p> <p>You will work in a dedicated team of driven experts from many aspects of engines and exhaust aftertreatment technologies.</p> <p><br/> The work will be performed mainly at Scania Materials Technology in Södertälje.</p> <p><br/> <b>Education</b><br/> Master’s student in chemical engineering or equivalent. You should have an interest in experimental work and the ability to address technical challenges in the laboratory. The ability to work independently, interest in problem solving and a curious mindset are very valued qualities.</p> <p> </p> <p>Number of students: 1<br/> Start date: Spring 2025<br/> Estimated duration: 20 weeks<br/> Credits: 30 ECTS</p> <p> </p> <p><b>Contact persons and supervisors</b><br/> <b>Supervisor:</b>     Samuel af Ugglas, samuel.af.ugglas@scania.com</p> <p><b>Group manager:</b>    Ragna Elger, ragna.elger@scania.com <br/>  </p> <p><b>Application</b><br/> Your application should include CV, cover letter and transcript of records</p> <p> </p> <p>A background check might be conducted for this position. We are conducting interviews continuously and may close the recruitment earlier than the date specified.     <br/> <b>Payment</b><br/> Scania will pay 20 000 SEK at the start of the master thesis project and 20 000 SEK after the final report is approved.</p> <p> </p> <p><br/>  </p> <p><span><span><b>30 credits – Fuel impact on particulate formation and aftertreatment performance</b></span></span></p>