Mina suhtun sellesse väga skeptiliselt.. Millised on arvamused sellest tootest ja sarnastest lahendustest ? Ons keegi reaalselt paigaldand ka neid ? (aksepteeritavad autotestijad vms)
HAFC and PICCKeegi võiks asja ära proovida. Kunagi karburaatori ajastul tundus sissepritse ka kindlasti väga utoopiline ja täiesti loll jutt et see kütusekulu vähendab. Mulle igatahes meeldib et selliseid mehi on kes asja uurivad ja midagi ka valmis saavad. Enne kui ise või keegi erapooletu asja proovinud ei ole ma küll kohe asja maha ei teeks.
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Pontiac Fiero SE 3.4 V6 '85
HAFC and PICCno kui see asi tegelikult ka toimiks, oleks sellest ikka väga palju juttu. Sest kokku hoid on ju JULM. See ikka rohkem selline teleturu kaup
HAFC and PICCA simplified single-step combustion reaction is represented as:
[FUEL] + [HYDROGEN] + [AIR] → HC + CO + CO2 + H2O + NOx
[edit] 1975
Research in 1975 examined hydrogen enhanced gasoline in lean combustion.[5] John Houseman and D.J Cerini of the Jet Propulsion Laboratory produced a report for the Society of Automotive Engineers titled "On-Board Hydrogen Generator for a Partial Hydrogen Injection Internal Combustion Engine", and F.W. Hoehn and M.W. Dowy, also of the Jet Propulsion Lab, prepared a report for the 9th Intersociety Energy Conversion Engineering Conference, titled "Feasibility Demonstration of a Road Vehicle Fueled with Hydrogen Enriched Gasoline."[5]
[edit] 2002
Research done in 2002 shows that the "addition of hydrogen to natural gas increases the burn rate and extends the lean burn-limit".[4] Also concluded was that "hydrogen addition lowers HC emissions", and with properly "retarded ignition timing" also reduces NOx emissions.[4]
Further research in 2002 achieved results showing "a reduction of NOx and CO2 emissions", by modeling an on-board hydrogen reformer and "varying the efficiency".[3] The research was specifically a "numerical investigation" done to "forsee performances, exhaust emissions, and fuel consumption of a small, multi valve, spark ignition engine fueled by hydrogen enriched gasoline".[3]
[edit] 2003
In 2003 Tsolakis et al. of the University of Birmingham showed that "partial replacement of the hydrocarbon fuel by hydrogen combined with EGR resulted in simultaneous reductions of smoke and nitrogen oxides emissions (NOx) without significant changes to engine efficiency".[8] Similar results have been presented by a team of scientists from Zhejiang University, China, which found that "a little amount of hydrogen supplemented to the gasoline-air mixture can extend the flammability of the mixture... improving the economy and emissions of engines".[9]
[edit] 2004
Test results in 2004 show "that the H2-rich reformate gas was an excellent NOx reductant, and can out perform raw Diesel fuel as a reductant in a wide range of operating conditions".[10] This is referring to Diesel fuel being used in excess, as a reductant, to cool the combustion reaction, which indeed has a mitigating effect on NOx production.
In 2004 research was conducted concluding that an "SI engine system fueled by gasoline and hydrogen rich reformate gas have been demonstrated" to achieve a "dramatic reduction of pollution emissions".[11] This was achieved by "extending EGR operation" in addition to consuming "gasoline and hydrogen rich reformate".[11] Emissions results show that "HC -emissions as well as NOx-emissions could be reduced to near zero".[11] Overall a 3.5% reduction in CO2 emissions was achieved during the "FTP test cycle".[11] The research also concluded that the exhaust aftertreatment system can be simplified, "resulting in cost reduction for the catalysts".[11]
[edit] Commercial products
Commercially, Canadian Hydrogen Energy Company, Ltd. produces an HFI system which generates hydrogen during vehicle operation by electrolysis of water (from an onboard storage tank) using power from the vehicle's electrical system. The units cost between $4000 to $14000 according to a 2005 Wired News article.[12] CHEC claims the product provides a 10% fuel savings.[13][14] CHEC competitors filed a motion to stop CHEC from selling its HFI system, but in 2006, this motion was abandoned.[15]
[edit] Government
To date, Hydrogen fuel enhancement, nor the HFI product, nor competing products have been addressed specifically by the EPA, as none of the research devices investigated above, or the HFI have reports available as per the "Motor Vehicle Aftermarket Retrofit Device Evaluation Program".[16] In general there are no references available for the US Government addressing the concept of Hydrogen fuel enhancement.
ma olen võibolla mingi uskumatu toomas aga enne tõesti ei usu kui kuskil ise ära näen.
29.04.2008 at 20:58
2 edits. Last edited 29.04.2008 at 21:05 by _siim_
