[elektro] Vízbontó

Fuzesi Arnold arnold.fuzesi.lista at gmail.com
Tue Sep 3 17:50:46 CEST 2013



On 09/03/2013 05:39 PM, Király, Gyula wrote:
> Üdv!
>
>> Jellemzoen szegeny keverekkel jarnak a mai autok tudtommal...
>>
>> Japanok mar nagyon regota, de a direkt befecskendezessel ugy tudom
>> mindenki.
>
>> Hirtelen:
>> http://en.m.wikipedia.org/wiki/Lean_burn
>
> Szerintem meg ( ha már wikipédia):
>
> "A lambdaszonda másik fontos szerepe az, hogy a katalizátor hatékony
> működéséhez szükséges oxigénszint beállításához elektromos jelet
> szolgáltat. A katalizátorok ugyanis csak a λ = 1,0 értékhez közeli
> tartományban képesek a kipufogógáz három legkárosabb komponensének a
> szénhidrogén (CH), a szén-monoxid (CO) és a nitrogén-oxidok (NOx)
> leghatékonyabb átalakítására."
> http://hu.wikipedia.org/wiki/Lambda-szonda


Innen indult  1970 kornyeken a dolog, de mar nagyon nem itt tart..

Ez idezett linkből:
"Ultra lean mixtures with very high air–fuel ratios can only be achieved by 
direct injection engines."

->

http://en.wikipedia.org/wiki/Gasoline_direct_injection
"Ultra lean burn or stratified charge mode is used for light-load running 
conditions, at constant or reducing road speeds, where no acceleration is 
required. The fuel is not injected at the intake stroke but rather at the latter 
stages of the compression stroke. The combustion takes place in a cavity on the 
piston's surface which has a toroidal or an ovoidal shape, and is placed either 
in the center (for central injector), or displaced to one side of the piston 
that is closer to the injector. The cavity creates the swirl effect so that the 
small amount of air-fuel mixture is optimally placed near the spark plug. This 
stratified charge is surrounded mostly by air and residual gases, which keeps 
the fuel and the flame away from the cylinder walls. Decreased combustion 
temperature allows for lowest emissions and heat losses and increases air 
quantity by reducing dilation, which delivers additional power. This technique 
enables the use of ultra-lean mixtures that would be impossible with carburetors 
or conventional fuel injection.[1][2][3]
     Stoichiometric mode is used for moderate load conditions. Fuel is injected 
during the intake stroke, creating a homogeneous fuel-air mixture in the 
cylinder. From the stoichiometric ratio, an optimum burn results in a clean 
exhaust emission, further cleaned by the catalytic converter.
     Full power mode is used for rapid acceleration and heavy loads (as when 
climbing a hill). The air-fuel mixture is homogeneous and the ratio is slightly 
richer than stoichiometric, which helps prevent detonation (pinging). The fuel 
is injected during the intake stroke."


>
> Szóval nem levegőszegény, hanem 20%-al dúsabb, mint lehetne.

Nem..pont nem.

> Amúgy rosszul fogalmaztam, nem a katalizátort, hanem a lambda-szondát kell
> kiölni...:}}

Mar miért kellene?
Motor uzemeljen ott ahova terveztek, az h javitok az egesen (millio parametere 
van, amin lehet reszelni), vagy novelhetem az elogyujtast a benya 
kompresszioturese miatt az nem nagyon befolyasolja a lambda kornyeki dolgokat.

A.



More information about the Elektro mailing list