Abstract:

The evaluation to fuel economy, which is an important vehicle performance, depends on driving
cycle. A method for road driving cycle was developed considering urban complicated classified road, traffic flow,
driving habit with taking Hefei city as an example. A driving cycle test system was constructed based on the
CAN (controller area network) bus. The urban road was classified into express road, main road, subsidiary road,
by-pass road, etc., and some tests were conducted considering the weather, the using of air-conditioner, the
test time phase, holidays or weekend, etc. A driving cycle including the shift and the road slope information was
developed, verified and optimized by drum dynamometer tests. The results show that the deviation is less than 2%
steadily for the fuel consumption between the drum dynamometer tests using the developed driving cycle and
the road way tests. Therefore, it proves this cycle develop method is effective and feasible.

Key words: passenger vehicle, urban road, driving cycle, route selection, road way test