ICT2014 Abstracts

The paper presents an analysis of thermal energy recovery trough a proprietary thermoelectric generator in an actual vehicle driving cycle reproduced on a dynamic engine test bed. The tests were performed on a 1.3 liter 66 kW diesel engine. The TEG generator was fitted in the vehicle exhaust system.

In order to assess the thermal energy losses in the exhaust system advanced PEMS research tools were used such as Semtech DS. by Sensors Inc. Aside from the exhaust emissions the mentioned analyzer measures the exhaust mass flow and exhaust temperature, vehicle driving parameters and reads and records the parameters of the engine. The difficulty related to the measurements under actual traffic conditions, particularly when passenger vehicles and thermoelectric generators are used in the aspect of energy recovery, spurred the authors to develop a proprietary method of transposing the actual driving cycle as a function f = V(t) onto the engine test bed. On the said test bed the driving profile, previously recorded in the city traffic was reproduced. The length of the cycle was 11 km. Along with the motion parameters the authors reproduced the parameters of the vehicle and its transmission. The adopted methodology enabled high repeatability of the research trials while still ensuring engine dynamic states occurring in the city traffic.