Engaging in a thesis project at Scania is a valuable opportunity to establish connections for your future career. Many of our current employees began their professional journeys with a thesis project, and we continue to seek partnerships with students and academic institutions. If you are interested in pursuing an acoustic project beyond the scope of this posting, feel free to reach out to us.

Background
Scania is dedicated to setting the benchmark for sustainable vehicle solutions. One of the critical challenges for vehicles powered by internal combustion engines is reducing noise levels. The exhaust silencer plays a pivotal role in controlling noise emissions and must deliver high acoustic performance. Increasingly, the development of silencer systems is driven by the need for efficient and accurate simulation techniques.

Objective

To develop semi-1D and semi-analytical methods for efficient acoustic simulations of silencer systems and to propose design improvements based on these simulations.

Job description

This thesis project offers flexibility and can be adapted to the student’s interests while focusing on key objectives. The main tasks may include:

Resolve acoustic problem through data analysis, testing, and vehicle data interpretation. Setting up acoustic simulations in COMSOL or GT-Power to model transmission and insertion loss, developing accurate finite element and lumped element models, and incorporating transfer matrices for silencer systems to achieve efficient simulation.  Validating the developed methods using existing simulation data and experimental results provided by Scania. Performing root cause analysis based on the developed models to assess the acoustic properties of real silencer systems and suggest design optimizations. 

Education/program/focus

Candidates with the following background and skills will be preferred: Strong foundation in acoustics, sound and vibration, mechanical engineering, or technical physics, with relevant coursework or project experience. Proficiency in numerical simulation (familiarity with COMSOL Multiphysics® is a plus) and Matlab programming. Number of students: 1 Start date for the thesis work: January 2025 (flexible start date) Estimated time required: 20 weeks
Note: If you currently live far from Stockholm/Södertälje, it might be possible to rent one of Scania’s furnished apartments in Södertälje for the duration of the thesis.

Contact persons and supervisors
Zibo Liu, Development engineer ENXPS, zibo.liu@scania.com

Jessica Hedstig, Group manager ENXPS, jessica.hedstig@scania.com

Application:
Your application must include a CV, personal letter and transcript of grades
A background check might be conducted for this position. We are conducting interviews continuously and may close the recruitment earlier than the date specified.