Development and Implementation of a Controllable Thermostat for an Engine Cooling System
Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Reducing fuel consumption is one of the main aims when developing new trucks at Scania. For instance, there are a lot of new EU regulations on what emission levels are allowed. Also, having a low fuel consumption gives Scania an edge over their competitors. This master thesis will investigate one possible way of reducing the fuel consumption in a truck. The aim is to allow a higher engine temperature which gives a higher oil temperature causing less friction in the engine. Thus leading to a more ecient engine and reduced fuel consumption. This needs to be done without risking that the engine overheats. The method used to achieve this is a controllable thermostat which regulates the engine temperature with respect to dierent driving scenarios. In this work a control strategy for a controllable thermostat is produced with help of a Simulik environment where it's tested. A controllable thermostat consisting of a three way valve and an actuator is then installed in a truck and tested on roads. The tests in the truck shows that the controllable thermostat can eciently regulate the engine temperature to dierent reference temperatures and results from simulations showed that a fuel reduction is possible.
Place, publisher, year, edition, pages
2012. , 26 p.
EES Examensarbete / Master Thesis, XR-EE-RT 2012:025
Electrical Engineering, Electronic Engineering, Information Engineering Control Engineering
IdentifiersURN: urn:nbn:se:kth:diva-104016OAI: oai:DiVA.org:kth-104016DiVA: diva2:562641
Master of Science in Engineering - Electrical Engineering
Johansson, Karl Henrik, Professor