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Dieselul pe cale de disparitie in curand?

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#1
emil_sv

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http://www.autoexpre...ld-kill-diesels

Quote

New petrol engine tech could kill diesels

The variable compression petrol engine will arrive in an Infiniti QX50 and its efficiency gains could make diesel redundant
The Renault-Nissan Alliance is to launch the world’s first ever variable compression engine in a production car – amid claims that it will greatly reduce reliance on diesel power.
The groundbreaking 2.0-litre turbo VC-T petrol unit is claimed to offer the performance of a V6 but with much improved efficiency, and is being hailed as the ‘most advanced internal combustion engine ever created’. It will be unveiled at the Paris Motor Show next month.
Infiniti will be the first of the Alliance brands to feature the new engine, and plans to use the four-cylinder engine to eventually replace the ageing 3.5-litre V6 petrol unit used across the brand’s line-up. The first model to benefit will be the new QX50 SUV, which was hinted at by the QX Sport Inspiration Beijing Motor Show concept earlier this year. The QX50 goes on sale in 2018,
Eventually, the VC-T is likely to find its way into models made by sister companies Renault and Nissan, with the next-generation Kadjar and Qashqai potential candidates for the tech.
How does the variable compression engine work?
The tech works by altering the volume of the combustion chamber between the top and bottom piston position. This gives different compression ratios, ranging from 8:1 to 14:1.
A low compression ratio delivers superior performance; a higher ratio allows improved fuel economy. The volume is changed via a new multi-link mechanism and control arm,  and the engine automatically applies the optimum ratio depending on driving conditions.
Shinichi Kiga, chief powertrain engineer (future), Nissan told Auto Express: “This is original and unique technology – a world first.” Infiniti claims a maximum 200Kw output for the VC-T, which equates to approximately 270bhp, and 390Nm.
What are the benefits?
Fuel economy is said to be around 27 per cent better than for the 3.5-litre V6, and 10 per cent better than comparable 2.0-litre petrol rivals. Consumption is on a par with 2.0-litre diesels. Performance is said to be 10 per cent up on 2.0-litre turbo petrol rivals.
A company spokesman said: “This won’t replace all our diesels. But it has that potential.” Significantly, it is lighter than the latest diesel engines, and cheaper to make too.
Pairing the VC-T with a CVT gearbox is said to be the best solution for maximum efficiency, and Infiniti also says the transversely mounted engine could be used in hybrids. Eco and Sports modes will be fitted to cars with the engine to allow drivers to determine how it is used.

http://www.autoexpre...not-legislation

Quote

Advances in tech like variable compression petrol engines will kill off diesel engines, rather than punitive taxation, says Steve Fowler
Here's a prediction for you: diesel engines will completely disappear from the line-ups of some major car makers in the next five years.
Actually, it’s not me making that prediction – I met with the boss of one big car company this week who told me he thought that he wouldn’t have any diesel models in his brand’s range by 2021. A bold statement given that around half of the models his company is currently selling are diesel-powered.
Much has been written recently about the potential demise of diesel due to concerns over the local pollutants they emit compared with petrol engines. The car industry has been lobbying hard, especially encouraging politicians not to demonise diesel amid threats of punitive taxation.
Last week we reported on the hi-tech petrol engines being developed by Infiniti that promise diesel efficiency with petrol performance. Combine that with the increasing number of hybrid models we’re seeing and an ever-growing range for plug-in models (the upcoming Paris Motor Show will see mainstream EVs boasting a 200-mile-plus range) and it’s easy to see what seems like a foolhardy prediction coming true.

Ce parere aveti? Personal mi se pare fantastic ca au reusit sa faca motoarele pe benzina competitive dpdv al consumului cu dieselul. Mult timp au fost neglijate si majoritatea investitiilor in tehnologia motoarelor a fost axata pe diesel, fapt ce a dus intr-adevar la cresterea poluarii cu particule nocive, dieselul este mult mai nociv pentru mediu decat benzina, singurul avantaj la diesel este emisia ceva mai mica de CO2 si cam atat. Cam ar fi momentul ca dieselul sa fie din nou relegat la aplicatiile sale traditionale, camioane, trenuri, dube etc si masinile normale de pasageri sa ramana la motorul pe benzina, mai curat si mai rafinat. In ultimii ani s-a renuntat la ipocrizia eco si incurajarea dieselului, tendinta momentan este de trecere inapoi la benzina, din cauza costurilor mai ridicate de intretinere la diesel si din cauza multitudinii de probleme cu filtrele de particule, complexitatea tratarii noxelor cu uree la multe dieseluri EURO 6 samd. Un mecanism cu cat e mai complex cu atat mai mari sunt sansele sa se strice. Deja dieselul in multe aplicatii nu prea mai merita decat pentru cei care fac foarte foarte multi km anual, diferentele de pret, cost al intretinerii si impozitare nu se amortizeaza usor, in plus mai exista sansa unor probleme in plus sau pur si simplu anularea oricaror economii daca masina necesita o reparatie majora legata de tratarea noxelor (filtru de particule etc).

Edited by emil_sv, 25 August 2016 - 08:08.


#2
Torquemada-666

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Ar fi super ca benzina sa fie la fel de eficienta ca un diesel. Abia astept noul Passat CC 2017 de 3.0 V6, sau de 3.6 V6.

Edited by Torquemada-666, 25 August 2016 - 08:10.


#3
f300

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Directia e buna, sensul are o mica hiba. Se merge spre Mondeo 1.0 V3 :-)

#4
oaspetele

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Foarte bine.
Dar ma gandesc ca si noile motorare functioneaza tot pe injectie directa, deci vor fi echipate cu filtru de particule.
Fuel economy is said to be around 27 per cent better than for the 3.5-litre V6, and 10 per cent better than comparable 2.0-litre petrol rivals. Consumption is on a par with 2.0-litre diesels.
Consumul e cu 10% mai mic decat 2 litri benzina, adica egaleaza 2 litri motorina? Sa fim seriosi.

#5
emil_sv

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View Postoaspetele, on 25 august 2016 - 08:16, said:

Foarte bine.
Dar ma gandesc ca si noile motorare functioneaza tot pe injectie directa, deci vor fi echipate cu filtru de particule.
Fuel economy is said to be around 27 per cent better than for the 3.5-litre V6, and 10 per cent better than comparable 2.0-litre petrol rivals. Consumption is on a par with 2.0-litre diesels.
Consumul e cu 10% mai mic decat 2 litri benzina, adica egaleaza 2 litri motorina? Sa fim seriosi.

Motoarele de ultima generatie pe benzina sunt foarte eficiente pe anumite paliere. In plus tehnologia asta e abia la inceput, 10% acum, in cativa ani o sa fie 20%... Momentan diferenta intre un 2.0 diesel si un 2.0 benzina de puteri aproximativ egale este undeva intre 1-2 litri (consum combinat) in functie de producator.

Edited by emil_sv, 25 August 2016 - 08:20.


#6
oaspetele

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2 litri poate insemna 25%, nu 10.
:)

Vorbim de real life, nu de ce zice producatorul.

#7
devlin2427

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Ideea pare "inspirata" din ce a facut Mazda cu Skyactive dar rezultatele par mai proaste. Oh well.

#8
Hansolo

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Din articol:
,,A bold statement given that around half of the models his company is currently selling are diesel-powered."
,,The soothsayer I was speaking to was vocal in his criticism of VW for damaging diesel’s chances in the US (at least that tells you who he doesn’t work for!)"

Oare despre ce producator o fi vorba? Parca n-as crede ca Renault are 50% diesel, nici PSA.
In rest de vazut practic, fireste.

#9
pacopaco1967

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View Postemil_sv, on 25 august 2016 - 08:20, said:

Motoarele de ultima generatie pe benzina sunt foarte eficiente pe anumite paliere. In plus tehnologia asta e abia la inceput, 10% acum, in cativa ani o sa fie 20%... Momentan diferenta intre un 2.0 diesel si un 2.0 benzina de puteri aproximativ egale este undeva intre 1-2 litri (consum combinat) in functie de producator.
Ce nu stiu multi e ca un motor pe benzina pentru a fi eficient functioneaza cu exces de benzina iar un Diesel pentru a fi eficient functioneaza cu exces de aer ..

#10
emil_sv

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View Postpacopaco1967, on 25 august 2016 - 08:39, said:

Ce nu stiu multi e ca un motor pe benzina pentru a fi eficient functioneaza cu exces de benzina iar un Diesel pentru a fi eficient functioneaza cu exces de aer ..

Cum adica? Elaboreaza.

#11
paso87

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View Postpacopaco1967, on 25 august 2016 - 08:39, said:

Ce nu stiu multi e ca un motor pe benzina pentru a fi eficient functioneaza cu exces de benzina iar un Diesel pentru a fi eficient functioneaza cu exces de aer ..

Ce ne facem cand o sa ne batem cu dieselul pentru excesul ala de aer ? ? ?
Traiasca DCI mai bine ca noi.

#12
primuministru

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Vor fi pe cale de disparitie atunci cand masinile hibride sau electrice vor deveni accesibile ca pret tuturor si cand statiile de reincare vor fi la tot pasul.Deocamdata sunt prohibitive.

#13
pacopaco1967

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View Postemil_sv, on 25 august 2016 - 08:50, said:

Cum adica? Elaboreaza.
As fi off topic si e destul de laborios . Doar urmand cursurile unei universitati afli chestiunile astea . Entuziastii pun botul la orice informatie pentru ca nu pot verifica si merg pe incredere .

View Postprimuministru, on 25 august 2016 - 08:55, said:

Vor fi pe cale de disparitie atunci cand masinile hibride sau electrice vor deveni accesibile ca pret tuturor si cand statiile de reincare vor fi la tot pasul.Deocamdata sunt prohibitive.
Dieselul are niste chestii negative , pe masura ce scazi cilindreea scade si fiabilitatea , este destul de zgomotos si pentru o functionare ireprosabila necesita piese extrem de precise si de calitate. Daca noile motoare vor fi mai fiabile, silentioase si economice  plus pret de achizitie avantajos cu siguranta se va impune si va elimina celelalte tipuri .

Edited by pacopaco1967, 25 August 2016 - 09:02.


#14
danvlas

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La un asemenea motor nu se va putea folosi decat benzina cu cifra octanica ridicata, deci mai scumpa. Cumparatorul obisnuit e mai putin interesat de ecologie si mai mult de economie.

#15
Mihai_3

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Spoiler

eu unul nu vad disparitia dieselului prea usor......diferentele sunt evidente.
motorul diesel este mult mai rezistent in timp iar asta inseamna bani investiti in viitor la momentul achizitiei.

#16
ericmario

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Aceeasi publicati scrie in alt articol:
"Towing a caravan or trailer is a common use for these cars as well - and if that's your plan, the high torque of a large diesel engine is the best choice for load-lugging."
Posted Image

#17
sarac.lipit

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bă, ce să zic?
o iau băbeşte
115 parai barilu
la pompă 5.5 lei
25 parai barilu
la pompă 5,2 lei
cum dracu' să nu dai tare cu benzinarele cînd profitul a crescut de 5 ori doar stănd cu dej'tu'n cur?

benzina nu e toxică. Eu vomit doar cînd merg în spatele lor... bine că există recirculare

întrebare prostească
cum menţii acelaşi preţ cînd materia primă scade de 5 ori şi taxele sunt procent din materia primă????

referitor la ''dispariţia dizălului''...da, va dispare cănd cartelul petrolului ca fi cartelul energiei electrice şi solare. Doar atunci. Ca să pună botu' fraierii...o vor da cu ''locurile de muncă''...eu o dau cu Detroit... cît îi doare de acele locuri de muncă...

Edited by sarac.lipit, 25 August 2016 - 09:30.


#18
M0sGerila

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si la diesel deschizi geamul sa savurezi mirosul ?

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