Carburator vs. injectie

[john17]

Ma simt dator sa rectific o afirmatie pe care am facut-o mai sus: Mercedes a utilizat pe modelul 300 SL injectie directa de benzina din anii 1950! Ceea ce am afirmat ramane valabil, ea s-a raspandit de prin anii 2000, in curand nu se vor putea respecta normele de poluare din ce in ce mai severe decat cu acest sistem.
Galeria aia de plastic de care amintea colegul mai sus crapa de la rateuri in admisie, rateuri cauzate fie de benzina necorespunzatoare fie de functionare defectuoasa a injectoarelor! Altfel ajunge linistita si la 500 kkm. Ca masinile nu mai sunt durabile ca pe vremuri e f adevarat, dar asta e alta discutie!

[scorpionreptyle]

Originally Posted by RVL 2000

Puterea si cuplul nu vor fi niciodata handicapate pentru ca motorul e cu2 injectie ci pentru ca softul e de asa natura.
Carburatorul a fost superior doar ca timp de raspuns (la schimbarea regimului de functionare) primelor generatii de injectii monopunct.
In ziua de azi ECU are foarte multe informatii, printre care chiar si alitudinea, parametrii in functie de care carburatorul nu se regleaza automat.
Carburatorul nu mai are loc decat sub capotele pasionatilor si la muzeu, folosirea zi de zi e un chin in comparatie cu injectia care la orice masina functioneaza multe zeci de mii de km fara sughituri.

De cativa ani s-a trecut la injectia directa, care scoate complet din discutie carburatorul.

Am mai pus un post legat de asta,un carburator nu e superiordoar la timpul de reactie cat sila puterea mai mare dezvoltata pe o plaja mare de turatii. Carburatia pierde putere acolo unde injectia dezvolta maxim,si anume la turatiile maxime...serios,cine are nevoie de putere la rosu si cine de jos pana aproape de rosu?

[RVL 2000]

La motoarele ASPIRATE nu doar carburatia sau injectia determina curba de cuplu , ci DISTRIBUTIA.

Motoarele otto trebuie sa furnizeze o cantitate precisa de benzina in functie de aer, variatiile fiind foarte mici asa ca daca nu intra aer nu ai cum sa-i dai mai multa benzina indiferent ce sistem are.

Carburatorul nu are cum sa fie superior unui sistem care masoara cantitatea de aer, temperatura, altitudinea, cantitatea de oxigen dupa evacuare.

Carburatorul a fost candva ceva, aplicatiile in care mai e util se restrang foarte mult si se concentreaza in zona motoraselor mici.

@john17 - injectia directa nu e o mare gaselnita, e o evolutie firesca data de nevoia de a perfectiona explozia, probabil ca se viseaza la ea de cand s-a inventat motorul Diesel dar avea serioase probleme de fiabilitate pana nu de mult.

[LP_2011]

E greu sa vorbim de carburatie ca fiind superioara injectiei cand acum nu stiu daca mai este folosita de vreo marca(ma refer strict la autoturisme),deci selectia naturala si-a spus cuvantul si aici.Putem vorbi doar de carburatie vs injectie pe Dacia.Unde sa ne intelegem clar : nu e injectie multipunct.Poate ca stiti ca ,conversia la Dacia de pe carburatie pe injectie mono-punct este posibila fara a face mari schimbari.
Taicamiu are o nova din 1999 cu carburator dublu-corp si pot sa spun ca faceam cu ea orice SuperNova si sa nu vorbim de Logan (motorul renault 1.4MPI).La consum e adevarat ca nu scotea cat o supernova (consum de 7 la ture multe).
In concluzie : daca esti incepator si vrei o masina care sa si traga ,nu prea complicata si mai ales ieftina ,cauta o Nova cu carburator dublu-corp.

[alin_bmx]

Salut,sunt intr-o dilema,am un Renault 19 pe carburator weber 32 drt si nu stiu daca sa trec pe monopunct...care ar fi varianta mai buna?ma intereseaza si puterea dar in prezent imi da mari batai de cap iarna si vroiam sa-i pun o pompa de benzina electrica...sau sa trec pe injectie monopunct dar mi-e teama ca nu o sa mai traga asa bine

[bogdan_evo]

fii sigur ca nu vei mai avea aceeasi talpa ,dar intr-adevar iarna dai cheie si o ia

[lord_wader]

Originally Posted by alin_bmx

Salut,sunt intr-o dilema,am un Renault 19 pe carburator weber 32 drt si nu stiu daca sa trec pe monopunct...care ar fi varianta mai buna?ma intereseaza si puterea dar in prezent imi da mari batai de cap iarna si vroiam sa-i pun o pompa de benzina electrica...sau sa trec pe injectie monopunct dar mi-e teama ca nu o sa mai traga asa bine

dar cati CP are masina? si din ce an e?
Banuiesc ca e 1.6 sau 1.7
La aia 70-80CP iti mai faci griji daca se mai molesesc vreo 5? sa fim seriosi, nu e vreo masina de curse si nici nu ai sanse sa faci cu ea nici macar vreo supernova, deci nu vad rostul de a-ti face griji ca vei pierde putere

[450yfz]

clar injectie pt ca la carburator e greu sa faci turbo si injectie altfel se comporta\programeaza etc carburatorul din pct meu de vedere este pt motociclete si alte vrajeli din categoria aia si pt lucrurile din trecut!

[giovanny_best2000]

eu as zice carburatie...de ce???? poate ca asta se intreaba multi dintre voi dar si o sa va spun si de ce si nu o spun doar sa ma aflu in treaba
1 de facut un turbo la carburatie este mai usor decat injectie si nu necesita soft
2 intotdeauna presiunea in turbina la injectie nu o sa iti creasca cu punerea gazului jos iar la carburatie da....si aici nu vb de haltech ptr cele cu injectie ptr ca ajungem in alta parte
Eu unu personal daca as fii trait in era glaciara si de abia au iesit injectiile as fii ales carburatia. Doamne fereste sa nu credeti ca am ceva cu injectia ,intradevar se poate mult mai mult la injectie dar nu la motoare mici.
Si daca o luam pe baza de competitie tot carburatie as alege de ex: dintr-un motor de dacie 1.4 cu interne stoc il poti duce undeva la 260cp pusi la roata si nu la vorbele vecinului...dar pana a pune la roata sunt multe de facut sa ajunga la roata.
De exemplu cum ar fii sa te duci in campionatul national de viteza in coasta(CNVC) cu o dacia supernova cu motor de dacie supraalimentat(turbo) si sa le dai peste nas celor cu masini de zeci de mii de euro.
Atat pot sa va spun si nimic mai mult si toate fiind spuse asta este parerea mea.

[abamAppoime]

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[riso_ak]

WTF????
Mare iti e gradina Doamne, dar mai mare e WEB-ul

[abamAppoime]

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[alin_bmx]

Originally Posted by lord_wader

dar cati CP are masina? si din ce an e?
Banuiesc ca e 1.6 sau 1.7
La aia 70-80CP iti mai faci griji daca se mai molesesc vreo 5? sa fim seriosi, nu e vreo masina de curse si nici nu ai sanse sa faci cu ea nici macar vreo supernova, deci nu vad rostul de a-ti face griji ca vei pierde putere

Mai bine te abtineai la insulte,simteai tu nevoia sa spui ca am masina praf si etc,asa proasta cum e...e a mea,eu am intrebat ceva si puteai sa raspunzi frumos,,dar na...suntem romani si numai de critica ne arde."multumesc"!(am 1.4 ,72 cp ,112nm si e din 1997 masina,renault 19 europa ,ph2 adica)

[alin_bmx]

Originally Posted by giovanny_best2000

eu as zice carburatie...de ce???? poate ca asta se intreaba multi dintre voi dar si o sa va spun si de ce si nu o spun doar sa ma aflu in treaba
1 de facut un turbo la carburatie este mai usor decat injectie si nu necesita soft
2 intotdeauna presiunea in turbina la injectie nu o sa iti creasca cu punerea gazului jos iar la carburatie da....si aici nu vb de haltech ptr cele cu injectie ptr ca ajungem in alta parte
Eu unu personal daca as fii trait in era glaciara si de abia au iesit injectiile as fii ales carburatia. Doamne fereste sa nu credeti ca am ceva cu injectia ,intradevar se poate mult mai mult la injectie dar nu la motoare mici.
Si daca o luam pe baza de competitie tot carburatie as alege de ex: dintr-un motor de dacie 1.4 cu interne stoc il poti duce undeva la 260cp pusi la roata si nu la vorbele vecinului...dar pana a pune la roata sunt multe de facut sa ajunga la roata.
De exemplu cum ar fii sa te duci in campionatul national de viteza in coasta(CNVC) cu o dacia supernova cu motor de dacie supraalimentat(turbo) si sa le dai peste nas celor cu masini de zeci de mii de euro.
Atat pot sa va spun si nimic mai mult si toate fiind spuse asta este parerea mea.

iti multumesc mult si celor care au mai raspuns,cred ca am sa raman pe carburator si ii pun o pompa electrica de benzina (am mai vazut la cineva si o lua imediat la pornire)