Title: Managing disturbances with combustion control
Abstract:
Combustion engines are always subject to disturbances, particularly when they are used in vehicle powertrains. There are many types of disturbances and they affect the engine behavior in different ways and with different bandwidths. The lowest bandwidth disturbances (<10-6 Hz) are hardware related and can be caused by production tolerances and component aging. The next level is fuel related disturbances and disturbances related to ambient conditions (~10-5 Hz but could involve faster transients). The fastest disturbances are the ones related to powertrain interactions and can be up to the order of 10 Hz. It is obvious that no single control solution can handle disturbances spanning seven orders of magnitude of bandwidth and this plenary lecture addresses different methods based on closed loop combustion control using in-cylinder feedback information. The methods range from low bandwidth supervisory control through cycle-to-cycle control to in-cycle control where combustion is actively controlled while it happens.
Biography:
Per Tunestal received his PhD in Mechanical Engineering at the University of California, Berkeley in 2000. He presently holds a position as Professor at Lund University where he is in charge of the engine control activities. Per Tunestal has previously served as Director of The KCFP Engine Research Center, a consortium financed by The Swedish Energy Agency, Lund University and 14 member companies world-wide. Special interests are engine control based on in-cylinder measurements and cylinder-pressure based parameter estimation. Per Tunestal holds more than 130 scientific publications within the combustion engine field and he has served as chairman of the Control and Calibration committee within the Society of Automotive Engineers. Lund university was founded in 1666. Today it is an international center for research and education that has approximately 48 000 students and 7500 employees. Lund University is respected as one of the top universities in Sweden with an excellent academic reputation and a large number of visiting professors and international students. Lund University is also consistently ranked as one of the top 100 universities in the world.
