buletinul institutului politehnic din iaşi - Universitatea Tehnică ...

106 Ioan Hiticas et al.
used to monitor the exhaust species and amounts during the measurements on
Opel Omega vehicle, using IP50 as fuel mixture. The elements monitored were
CO, CO2, O2, NOx, HC, and, based on this elements (Crass, 2008), we can
calculate the excess air ratio, λ.
After the necessary adjustments made to prepare the vehicle for
measurements (Bosch, 2004; Atkins, 2009) we analysed the exhaust gases in
two cases: for partial load and for full load. The graphics present the following
curves: the reference curves, which are for 100% gasoline used as fuel, the
second curves are for engine adaptation, and the last curves for engine
functioning with fuel mixture, IP50.
Fig. 4 – CO emission at full load.
Fig. 5 – HC emission at full load
[Hiticas et al., 2012].
Fig. 5 – CO2 emission at partial load.
Fig. 6 – NOx evolution at full load
[Hiticas et al., 2012].
It can be observed from graphics that the fuel mixture present advantages
and also disadvantages. After our experimental research we conclude that this