At the Department of Chemical and Biochemical Engineering – CAPEC research centre a PhD position is available in connection with a newly started Danish National Advanced Technology Foundation project (in collaboration with Haldor Topsøe A/S) aiming at developing the next generation of exhaust gas cleaning technologies for diesel vehicles.
The automotive catalyst market is the most rapidly growing catalyst market in the world. New emission legislation in many countries will compel truck and car manufacturers to fit catalysts on their vehicles. In some markets e.g. Europe and the USA, catalysts have been fitted on heavy duty diesel trucks and diesel cars for the last 5-6 years and tightening emission regulations continue to create a demand for catalytic solutions – as exemplified by the NOx focus in Euro VI (valid from 2014) for trucks and busses (mandating a maximum NOx emission level of 0.4 g/kwh). NOx is reduced on a selective catalytic surface in a SCR-unit in reaction with ammonia. Urea therefore needs to be dosed to the flue gas in a controlled way depending on the conditions and the load on the engine.
This PhD project will develop new and improved technology for operation of automotive exhaust cleaning systems for heavy duty diesel vehicles. Based on dynamic models of the reactions in the existing and novel SCR-units, strategies can be developed for monitoring the state of the system and optimize the controlled ammonia dosing. This technology will utilize process insights and models explicitly in the optimization of the process performance to create state of the art exhaust gas cleaning.
The project will include the following activities:
- Literature survey of automotive SCR systems and NOx emissions control.
- Derive and implement first principle simulation models of the key components in the flue gas after treatment system and tuning of these models using full-scale engine data for predictive performance using state of the art methods in experimental design and parameter estimation.
- Synthesis and validation of model based schemes for monitoring of key performance variables.
- Synthesis and validate model based control schemes of gas emissions for the after treatment system.
- Performance test and benchmarking of integrated system for process monitoring and control in lab test facilities at Haldor Topsøe A/S using dynamic driving cycles.
Qualifications
Candidates should have a master’s degree in chemical engineering or a similar degree with an academic level equivalent to the master’s degree in engineering. Candidates with strong profiles in process modelling, simulation and control as well as experience with programming and experimental work will be preferred.
Approval and Enrolment
The scholarships for the PhD degree are subject to academic approval and the candidates will be enrolled in one of the general degree programmes of DTU. For information about the general requirements for enrolment and the general planning of the scholarship studies, please see the DTU PhD Guide.
We offer
We offer an interesting and challenging job in an international environment focusing on education, research, public-sector consultancy and innovation, which contribute to enhancing the economy and improving social welfare. We strive for academic excellence, collegial respect and freedom tempered by responsibility. The Technical University of Denmark (DTU) is a leading technical university in northern Europe and benchmarks with the best universities in the world.
Salary and appointment terms
The salary and appointment terms are consistent with the current rules for PhD degree students. The period of employment is 3 years.
Further information
Further information may be obtained from Ass. Professor Jakob Kjøbsted Huusom, tel: +45 4525 2801, e-mail jkh@kt.dtu.dk.
You can read more about DTU Chemical Engineering here.
Application
We must have your online application by 12 April 2013. Please open the link “Apply online”, fill in the online application form and attach the following documents:
- A letter motivating the application (cover letter)
- Curriculum vitae
- Grade transcripts and BSc/MSc diploma
- Excel sheet with translation of grades to the Danish grading system (see guidelines and excel spreadsheet here)
Candidates may apply prior to obtaining their master’s degree, but cannot begin before having received it.
All interested candidates irrespective of age, gender, race, disability, religion or ethnic background are encouraged to apply.
Application Deadline : 12 April 2013
Denmark : PhD project in Modelling and Operation of Diesel Engine Exhaust Gas Cleaning Systems
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