I have observed that the indication of fuel consumption, according to the indication of the onboard computer, varies from day to night, due to the variation of the ambient temperature, the variation is between 5 and 10 ° C. Like 20°C at day, and 10 or 15°C at night temperature.
The variation on the fuel consumption, when at day I got 20 km/liter, at night (at the same speed) I got 15 km/liter.
What I don't know, is whether this variation is due to the pressure variation of the tires (by the temperature variation), or a less efficient air-fuel mixture at low temperatures, as this engine does not have a shot of hot air, as had the old carburetor engines. Or the reason are the the factors combined (less pressure of the tires, and less efficient air-fuel mixture at low temperatures).
One factor that may influence, is the presence of ETHYL ALCOHOL, whose concentration can approach 20%, with the lowest temperatures, is not successfully gasified. In the case of Brazil, where the UP! can be used with 100% alcohol, the ambient temperature, on average, are at least 10 ° C higher than in Argentina.
I use on my UP! Esso energy 5000, which has 96 octane:
Substance (s) or reportable hazardous substance (s) complex (s).
Name
CAS#
Concentration*
ETIL ALCOHOL
64-17-5
<= 20%
GASOLINA
86290-81-5
>= 80%
METIL-TERC-BUTIL-ETER
1634-04-4
<= 9%
Constituent (s) dangerous (s) content (s) in substance (s) complex (s).
Name
CAS#
Concentration*
BENCENO
71-43-2
< 1.2%
ETIL BENCENO
100-41-4
1 - 5%
N-HEXANO
110-54-3
1 - 5%
NAFTALENO
91-20-3
<1%
PSEUDOCUMENO (1,2,4- TRIMETILBENCENO)
95-63-6
1 - 5%
TOLUENO
108-88-3
5 - 10%
TRIMETIL BENCENO
25551-13-7
1 - 5%
XILENOS
1330-20-7
5 - 10%
The variation on the fuel consumption, when at day I got 20 km/liter, at night (at the same speed) I got 15 km/liter.
What I don't know, is whether this variation is due to the pressure variation of the tires (by the temperature variation), or a less efficient air-fuel mixture at low temperatures, as this engine does not have a shot of hot air, as had the old carburetor engines. Or the reason are the the factors combined (less pressure of the tires, and less efficient air-fuel mixture at low temperatures).
One factor that may influence, is the presence of ETHYL ALCOHOL, whose concentration can approach 20%, with the lowest temperatures, is not successfully gasified. In the case of Brazil, where the UP! can be used with 100% alcohol, the ambient temperature, on average, are at least 10 ° C higher than in Argentina.
I use on my UP! Esso energy 5000, which has 96 octane:
Substance (s) or reportable hazardous substance (s) complex (s).
Name
CAS#
Concentration*
ETIL ALCOHOL
64-17-5
<= 20%
GASOLINA
86290-81-5
>= 80%
METIL-TERC-BUTIL-ETER
1634-04-4
<= 9%
Constituent (s) dangerous (s) content (s) in substance (s) complex (s).
Name
CAS#
Concentration*
BENCENO
71-43-2
< 1.2%
ETIL BENCENO
100-41-4
1 - 5%
N-HEXANO
110-54-3
1 - 5%
NAFTALENO
91-20-3
<1%
PSEUDOCUMENO (1,2,4- TRIMETILBENCENO)
95-63-6
1 - 5%
TOLUENO
108-88-3
5 - 10%
TRIMETIL BENCENO
25551-13-7
1 - 5%
XILENOS
1330-20-7
5 - 10%