Et puis, c'est indéniable, la sonorité envoutante de ces poêles à fuel donne le frisson. On voit bien le résultat du travail de recherche qui a fait appel aux technologies les plus pointues...

sq5

 

Des HP dans des pots, je pensais pas voir ça un jour. Dans mon panthéon du naze automobile, on est sur le podium…..

Tout les 2 des diesels 😎

TN 💗

Il y a 4 heures, KOOMICHRIS a dit :

TN 💗

C est moi 😎

😂🤣😂

CAR explains: Audi's S TDI engine

Published: 12 August 2019

https://www.carmagazine.co.uk/car-news/tech/audi-s-tdi-explained/

Audi is rolling out its punchy new 3.0-litre V6 diesel faster than you can say ‘particulate filter’ – and boldly replacing previous high-performance petrol models in the process.

The engine block is based on the ’50 TDI’ engine already in service in many Audis, but it’s been heavily revised. Uprated crankshaft, pistons, conrods and oil-temperature management, plus an electrically powered compressor (EPC) are the most notable differences.

The engine now puts out up to 344bhp and 516lb ft. That’s a chunky 58bhp and 59lb ft increase over a 50 TDI, but falls 100bhp short of the old petrol V8 in the S6 and S7. Torque, however, is up 111lb ft on the old V8, for a huge midrange kick. The SQ5 also makes the switch back to TDI power after its two-year dabble with a 3.0-litre petrol V6, with the S4 and S5 using the engine now, too.

With the SQ5, the news is easier to swallow: just 7bhp less, almost 150lb ft more, and increased fuel efficiency too. We’ve driven all three cars and come away mightily impressed by the new TDI powertrain. And that electrically powered compressor has proved key.

The ace card

The SQ7’s monstrous V8 diesel was first to debut the same kind of electrically powered compressor as found on the new V6 TDI. Audi says the unit ‘visually resembles a conventional turbocharger’ despite not using exhaust gases.

Instead, the EPC is designed to counteract turbo lag by responding to big thumps of throttle either from a standstill or at low engine speeds. If the engine thinks the extra boost is required, it closes a bypass valve, directing air through the compressor.

The compressor can respond in as little as a quarter of a second and spools up to a maximum speed of 70,000rpm. It then feeds the compressed air into the combustion chamber. It allows the V6 diesel to respond more promptly and expand the torque band, with the maximum 516lb ft available between 2500 and 3100rpm.

Hybrid help

As is the growing (and emissions-minimising) trend, Audi’s sporty diesel uses 48-volt mild-hybrid assistance as a complement to the compressor.

While the EPC is there to boost performance, the integrated belt-driven starter-generator and a 10Ah lithium-ion battery pack – which is neatly packaged underneath the boot floor – add extra efficiency to the turbodiesel powertrain.

It allows engine coasting for up to 40 seconds a time and for the start/stop system to kick in at up to 13mph when you’re coming to a stop. Along with the reduction in cylinder count and switch to compression ignition, the mild-hybrid tech helps boost fuel efficiency over the S6’s V8 predecessor, as well as petrol-powered contemporaries such as the Mercedes-AMG E53 or BMW 540i xDrive.

Audi’s S TDI: how it works

Not what it seems 
Electric compressor looks like a turbo, but isn’t. It’s set behind the intercooler on the intake path.

Spin cycle
Compressor responds in 250 milliseconds and spins at up to 70,000rpm, helping eliminate turbo lag.

Teamwork = dream work
A 48v mild-hybrid system allows for coasting to balance EPC’s power boost.

Audi Q7 with the most powerful diesel of all time V12 TDI

La nouvelle chaudière de chez Audi :

https://revueautomobile.ch/nouveautés/audi-réintroduit-le-moteur-diesel-six-cylindres-dans-les-séries-q5-et-a6

Si c'est fiable belle mécanique

On 11/29/2025 at 8:28 AM, aramis said:

Si c'est fiable belle mécanique

Je dirais que son niveau de complexité ne va guère dans le sens de la fiabilité sur le long terme.

https://www.autoscout24.ch/fr/d/audi-a8-33-tdi-quattro-tiptronic-20211728

CHF 14'999.–
Audi A8 3.3 TDi quattro tiptronic
02.2002
Diesel
229'000 km
224 PS (165 kW)
Automatique
9.7 l/100 km
4 roues motrices
Berline
Cylindrée 3'328 cm³
Cylindres 8
Type de moteur V
Vitesses 5
Capacité théorique de remorquage freinée 2'300 kg
Prix catalogue CHF 120'740
Importation directe/parallèle Non
Portes 4
Sièges 5
Longueur 5'034 mm
Largeur 1'880 mm
Hauteur 1'438 mm
Poids à vide 2'000 kg
Poids total 2'460 kg
Charge utile 460 kg
Extérieure gris
Intérieure noir
N° de certificat de type 1AB906
Consommation total 9.7 l/100 km
Consommation ville 13.9 l/100 km
Consommation pays 7.4 l/100 km
Emission CO2 261 g/km
Euro 3
Expertisée Oui
Dernière date MFK le 14.02.2026
Véhicule accidenté Non
Garantie Non

Modifié le 4 marsle 4 mars par z3m

A6 V6 TDi

R10 TDi

https://www.autoscout24.ch/fr/d/audi-exclusive-v12-12296805

Audi Q7 Exclusive V12
CHF 42'900.–
10.2009
Diesel
147'000 km
500 PS (368 kW)
Automatique
4 roues motrices
Cylindrée 6'000 cm³
Cylindres 12
Vitesses 6
Capacité théorique de remorquage freinée 3'000 kg
Prix catalogue CHF 250'000
Importation directe/parallèle Non
Portes 5
Sièges 5
Extérieure brun
Intérieure multicolore

je viens de regarder les dernières photos de ce sujet et j'ai failli vomir ...

si même un X5 pouvais etre comparé à un buffle , au pire à un éléphant ...

mais c'est quoi le troupeau d’hypothames en photo là ???

c'est rond , c'est gras ... ça manque franchement de dynamisme

22 minutes ago, ACS3 said:

mais c'est quoi le troupeau d’hypothames en photo là ???

c'est rond , c'est gras ...

Ce sont des Audi TDi, qui ne font donc pas dans la finesse. L'idée serait plutôt lourdeur et fumée noire.

J'ai du mal à trouver des photos avec le nuage à l'échappement car je pense que le service communication d'Audi nettoie régulièrement le web.

C'est @Beef qui en essayant de nous fourguer sa Golf R m'a donné envie de ranimer ce sujet, désolé pour les âmes sensibles qui tomberaient dessus.

Modifié le 6 marsle 6 mars par z3m