Type dienstverband:
Internship and graduation project
Uren per week:
Fulltime – 40

Internship | Development and validation of a phenomenological H2 HPDI Combustion Model

About this position

Hydrogen is considered as an important ( fuel for heavy duty combustion engines for mobility and power generation The hydrogen diesel High Pressure Direct Injection ( combustion concept is considered as a feasible combustion concept with high performance potential (power output, load response) This combustion concept is driven by the direct injection of hydrogen which is ignited using a small pilot fuel (e g diesel) injection For engine optimization, fast computing models with predictive capabilities (“phenomenological model”) simulating the HPDI combustion process are desired These models allow performing iterative engine simulations for systematic optimization, engine concept and controls/diagnostics development Main focus is on simulating in cylinder pressure, heat flows and NO emissions Currently, a base H 2 HPDI fuel injector and a H 2 HPDI in cylinder combustion model, built in the Matlab ® environment, are available These models will serve as the starting point of this assignment.

What will be your role?

Development and validation of a phenomenological Hydrogen High-Pressure Direct Injection Injector and combustion model. Extension of the model with NOx emission formation.


  • Literature study on HPDI (hydrogen) injection and combustion 1;
  • Get acquainted with the available H2 HPDI injector and combustion model;
  • Linking HPDI injector model to the HPDI combustion model and validating simulation results against measurements;
  • Identify possible model improvements and design, implement and validate solutions;
  • Extend validated H2 HPDI model with NO formation model;
  • Validate H2 HPDI model for NOx emissions using available measurement data;
  • HPDI combustion model sensitivity study towards optimizing efficiency and emissions;
  • Writing reports and presenting results.

What we expect from you

  • Affinity with combustion engines and numerical work
  • Good Matlab modeling skills

What you'll get in return

You want an internship opportunity on the precursor of your career; an internship gives you an opportunity to take a good look at your prospective future employer. TNO goes a step further. It’s not just looking that interests us; you and your knowledge are essential to our innovation. That’s why we attach a great deal of value to your personal and professional development. You will, of course, be properly supervised during your work placement and be given the scope for you to get the best out of yourself. Furthermore, we provide:

  • A highly professional, innovative internship environment, within a team of top experts.
  • A suitable internship allowance (615 euro for wo- and hbo-students, 390 euro for mbo-students, for a full-time internship).
  • Possibility of eight hours of free leave per internship month (for a full-time internship).
  • A free membership of Jong TNO, where you can meet other TNO professionals and join several activities, such as sports activities, (work-related) courses or the yearly ski-trip.
  • Use of a laptop.
  • An allowance for travel expenses in case you don’t receive an OV-card.

TNO as an employer

At TNO, we innovate for a healthier, safer and more sustainable life. And for a strong economy. Since 1932, we have been making knowledge and technology available for the common good. We find each other in wonder and ingenuity. We are driven to push boundaries. There is all the space and support for your talent and ambition. You work with people who will challenge you: who inspire you and want to learn from you. Our state-of-the-art facilities are there to realize your vision. What you do at TNO matters: impact makes the difference. Because with every innovation you contribute to tomorrow’s world. Read more about TNO as an employer.

At TNO we encourage an inclusive work environment, where you can be yourself. Whatever your story and whatever unique qualities you bring to the table. It is by combining our unique strengths and perspectives that we are able to develop innovations that make a real difference in society. Want to know more? Read what steps we are taking in the area of diversity and inclusion.

The selection process

After the first CV selection, the application process will be conducted by the concerning department. TNO will provide a suitable internship agreement. If you have any questions about this vacancy, you can contact the contact person mentioned below.

Important to be aware of before applying:

  • Before the start of the internship, the internship agreement from TNO needs to be signed. For students at a college or university based in the Netherlands, TNO uses the UNL-template (supplemented with a number of specific agreements from TNO). For students of foreign and MBO educational institutions, the TNO internship agreement applies. TNO does not sign any other internship agreements.
  • Before the start of the internship, the educational institution will need to confirm in writing that:
    • 1) you are enrolled at the educational institution during the internship, and;
    • 2) the internship takes place as part of the programme of the study.
  • The confirmation of educational institution takes place by signing the UNL template or forms prepared by TNO.
  • Interns at TNO must be in possession of a Dutch residential address at the start of the internship. Performance of internship activities from abroad is not possible.

Has this job opening sparked your interest?

Then we’d like to hear from you! Please contact us for more information about the job or the selection process. To apply, please upload your CV and covering letter using the ‘apply now’ button.