Conference article

Engine thermal shock testing prediction through coolant and lubricant cycling in Dymola

Eduardo Galindo

Rodolfo Soler

Alessandro Picarelli
Claytex Services Ltd. - Leamington Spa, UK

Victor Avila
Claytex Services Ltd. - Leamington Spa, UK

Download article

Published in: Proceedings of the 12th International Modelica Conference, Prague, Czech Republic, May 15-17, 2017

Linköping Electronic Conference Proceedings 132:19, p. 189-197

Show more +

Published: 2017-07-04

ISBN: 978-91-7685-575-1

ISSN: 1650-3686 (print), 1650-3740 (online)


In this work, an acausal multi-domain physical system model is used to study the interaction between an internal combustion engine operation and a range of cooling and lubrication system thermal cycling scenarios. Although the model can be used for modelling a wide range of scenarios, this paper concentrates on the application of engine thermal shock test dynamics prediction through coolant and lubricant cycling. An internal combustion engine is load-controlled on a dynamometer. Coolant and lubricant temperature transients are imposed on the engine system. Using freely available and commercial Modelica Libraries within the Dymola environment, the systems integration of the coolant rigs, lubricant rigs and engine is achieved. The rigs and the controllers are validated against test data to create predictive models of such systems for test virtualisation. This allows the user to develop and define control strategies for the tests from desktop, prior to engaging in laboratory tests.


Engine testing, thermal-shock, control system development


Casella. F. et al. (2006) The Modelica Fluid and Media library for modeling of incompressible and compressible thermo-fluid pipe networks Modelica Conference, 2006

Dempsey M., and Picarelli A. (2009). Investigating the multibody dynamics of the complete powertrain system. Como, Italy: Proceedings 7th Modelica Conference.

Dempsey M., Picarelli A, Fish G. (2012). Using Modelica models for driver-in-the-loop simulators. Munich, Germany: Proceedings 9th Modelica Conference.

Dempsey M., Roberts N., Picarelli A. (2013) Detailed Powertrain Dynamics Modelling in Dymola – Modelica. IFAC-AAC conference Tokyo, Japan.

Picarelli A., Galindo E., Diaz G. (2014) Thermal shock testing for Engines in Dymola. Lund, Sweden. 10th Modelica Conference, 2014

Citations in Crossref