Re: [sumo-user] vehicle mass and loading - emissions

[Michael Behrisch <oss@xxxxxxxxxxx>]

Hi Natalia,
no idea. Does your SUMO_HOME point to the correct location? Can you send 
your scenario?

Best regards,
Michael

Am 2018-01-19 08:02, schrieb Natalia Liora:
> Hi Michael,
>
> this is weird..It doesn’t have any impact on emissions or fuel. I
> tried also a similar change as yours  either for mass or loading of
> vehicles in the PC_G_EU4.PHEMlight.veh file located in the
> Sumo\data\emissions\PHEMlight directory. Also, in route file I
> specified the corresponding emission class as
> emission_class="PHEMlight/PC_G_EU4"/ . It seems that it recognises the
> database as it produces emissions for the specified class (in the
> emission-output file).
>
> I run the simulation for 1000sec.
>
> Any other idea for this?
>
> > On 18 Jan 2018, at 22:50, Michael Behrisch <oss@xxxxxxxxxxx> wrote:
> >
> > Hi Natalia,
> > it works here. I changed the vehicle loading to 5000 and the fuel
> > consumption roughly doubled.
> > Which value did you try? It is probably not very sensitive.
> >
> > Best regards,
> > Michael
> >
> > Am 18.01.2018 um 13:46 schrieb Natalia Liora:
> > > hello,
> > >
> > > I finally tried to change the vehicle loading in the 
> > > PC_G_EU4.PHEMLight.veh file but I didn’t get different emission 
> > > results.
> > >
> > > The files of PHEMLight database that uses the free version of SUMO 
> > > for the simulations, they are included in the path 
> > > DLR\Sumo\data\emissions\PHEMlight, right?
> > >
> > > I used version 0.31 on Windows OS.
> > >
> > > regards,
> > > Natalia
> > > > On 18 Jan 2018, at 13:58, Michael Behrisch <oss@xxxxxxxxxxx> wrote:
> > > >
> > > > Yes.
> > > >
> > > > Best regards,
> > > > Michael
> > > >
> > > > Am 2018-01-18 06:53, schrieb Natalia Liora:
> > > > > Thank you Michael.
> > > > > So, just to confirm again the following: the emission curves and
> > > > > factors that exist in the PHEMLight database do not depend on these
> > > > > values (vehicle mass/loading), right?
> > > > > regards,
> > > > > Natalia
> > > > > > On 18 Jan 2018, at 00:22, Michael Behrisch <oss@xxxxxxxxxxx> 
> > > > > > wrote:
> > > > > > Hi Natalia,
> > > > > > I never tried myself but yes you should get different result if 
> > > > > > you
> > > > > > change those values. The loading represents the additional mass 
> > > > > > added
> > > > > > via the driver itself, the passengers and the luggage etc. Just 
> > > > > > telling
> > > > > > from the code there seems to be a part of the rotational energy 
> > > > > > which
> > > > > > just depends on the emtpy vehicle mass, that's why the two values 
> > > > > > are
> > > > > > separated. For details I think you must read the relevant 
> > > > > > publications
> > > > > > on PHEMlight.
> > > > > > Best regards,
> > > > > > Michael
> > > > > > Am 17.01.2018 um 16:23 schrieb Natalia Liora:
> > > > > > > Hello,
> > > > > > > I would like to ask if it is possible to change the vehicle mass 
> > > > > > > or loading in the .veh files of the PHEMLight database without 
> > > > > > > changing the emission factors and curves that exist in the 
> > > > > > > database. That is to say, if I change the value of the vehicle 
> > > > > > > mass/loading (e.g. in PC_G_EU4_PHEMLight.veh) , will I get 
> > > > > > > different emission results (considering that the emission curves 
> > > > > > > will remain the same).
> > > > > > > Also, what does the vehicle loading represent?
> > > > > > > thank you,
> > > > > > > Regards,
> > > > > > > Natalia
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