Tässä ketjussa aikoinaan kinasteltiin asetonin vaikutuksesta auton moottorin toimintaan ja polttoainetalouteen...
Sattui silmiin aiheesta tehty tutkimus (
https://pdfs.semanticscholar.org/ad25/a ... 90ddf5.pdf), jonka yhteenveto seuraavassa:
Selityksenä: AE10 on 10% asetoni/bensa; E10 on 10% etanoli/bensa jne...
The conclusions from the experiment can be drawn as follows:
1. Acetone has a relatively lower laminar flame speed than that of ethanol; AE10 and AE30 have
retarded phasing compared to ethanol-gasoline blends (E10 and E30) at gasoline MBT, implying
that using acetone as an oxygenate additive could narrow the differences relative to pure gasoline
without any modifications on commercial engines
2. There is a negligible reduction in BTE with acetone addition relative to pure gasoline and
ethanol-containing gasoline; meanwhile, the BSFC can be improved relative to ethanol–gasoline
due to the higher LHV of acetone.
3. No combustion stability problems were caused by acetone addition based on the COV-IMEP
calculation. E10 has been shown to have a relatively small COV value compare with other blends.
4. AE30 shows the lowest HC emission under different equivalence ratios because of the better
volatility of acetone leading to an improvement in the fuel pre-mixing, better combustion and
post-flame oxidation. Compared with G100, E10 and E30 also show the improvement of HC
emission as the ethanol addition increases.
5. Higher CO emission from AE30 at stoichiometric ratio might be due to more unburned gases
returning from the crevice and partially reacting during the expansion and exhaust stroke in the
form of post-flame oxidation. In addition, the AE blends were less sensitive to the equivalence
ratio at fuel-rich conditions in terms of CO emission, which might reduce CO at full load and
transient accelerating.
6. The NOx emissions were more influenced by engine operating conditions rather than due to
different fuels (negligible changes).
In summary, there is potential usage of acetone as an oxygenate additive to commercial
ethanol-containing gasoline for reduction in HC emissions without an efficiency penalty, without
modifications to the default engine ECU calibration. Future work will involve studying the influence
of the water contained in the bio-ethanol and the measurement of unregulated emissions such as
aldehyde and acetone using the chromatography.
Eli asetonia voi käyttää bensan korvikkeena ilman tehon menetystä. Palamattomien hiilivetyjen määrä alenee.
Mutta siis netistä löytyvät huomattavat muutokset kulutuksessa ja tehossa ovat kirjoittajiensa oman mielikuvituksen tuotetta.
