Vidéo ( sans commentaires ni musique, probablement des beauty shots pour les journalistes)
HIGHLIGHTS FOR 2013 Veloster Turbo (Exclusive Turbo features)
Spécifications du moteur 1.6 GDI Turbo
Powered by a new 1.6-liter Turbocharged-Gasoline Direct Injection (T-GDI) engine and in-house six-speed automatic or manual transmission
Horsepower: 201 at 6000 RPM
Best-in-class highway fuel economy estimated at 38 mpg (M/T)
Best-in-class specific output at 125.6 horsepower per liter
Best-in-class weight to power ratio of 14 lbs/hp
Sport-tuned engine intake and exhaust note
Sport-tuned steering
Unique front fascia, foglights and ground effects
Hyundai-first Matte Gray paint
Unique 18-inch alloy wheels with chrome inserts
Projection headlights with unique LED headlight accents
Side mirrors with turn signal indicators
Unique LED taillights
Supervision cluster
Leather seating surfaces with driver’s lumbar support
Heated front seats
Turbo exclusive Graphite Black interior with Blue accents and headliner graphics
2013 Hyundai Veloster Turbo FeaturesTWIN-SCROLL TURBOCHARGER AND GDI TECHNOLOGY
The 1.6-liter turbocharged GDI four-cylinder engine in the 2013 Veloster Turbo produces 201 horsepower at 6000 rpm and 195 lb-ft of torque from 1750 – 4500 rpm with regular fuel. The Veloster Turbo is estimated to deliver 27 mpg city and best-in-class 38 mpg highway for manual transmission models. Hyundai’s 1.6-liter Gamma turbocharged engine features a twin-scroll turbocharger that when combined with the GDI system, results in instantaneous power delivery. Twin-scroll turbochargers have traditionally been used on more expensive high performance engines, but Hyundai has brought this technology down its line-up from the Sonata 2.0T.
Twin-scroll turbocharger designs have two exhaust gas inlets divided by split walls inside the turbine housing, with both gas passages controlled by a waste-gate. A twin-scroll turbo recovers even more energy from the exhaust than a single-scroll turbocharger, thanks to a divided manifold. The twin-scroll design separates the cylinders whose exhaust gas pulses interfere with each other, resulting in improved pressure distribution in the exhaust ports and a more efficient delivery of exhaust gas energy to the turbocharger’s turbine.
For example, at the start of the intake stroke of cylinder one and when both the intake and exhaust valves of cylinder one are open (valve overlap period), cylinder three already starts its exhaust stroke with the exhaust valve open. If the exhaust passages of cylinder one and three were connected, the exhaust gas pulse from cylinder three would increase the back pressure of cylinder one. This would reduce the induction of the fresh air and increase the amount of hot residual gases inside the cylinder. However, with the twin-scroll turbocharger setup, this interference is minimized.
The result of this superior scavenging effect from a twin-scroll design leads to better pressure distribution in the exhaust ports and a more efficient delivery of exhaust gas energy to the turbocharger's turbine. This in turn allows greater valve overlap, resulting in an improved quality and quantity of the air charge entering each cylinder. In fact, with more valve overlap, the scavenging effect of the exhaust flow can literally draw more air in on the intake side. At the same time, drawing out the last of the low-pressure exhaust gases help pack each cylinder with a denser and purer air charge. Maximum boost from the turbocharger is 18 psi.
The twin-scroll turbocharger design has several other advantages over traditional, single-scroll turbocharging systems, including:
Improved combustion efficiency
Low engine-speed efficiency
Kinetic exhaust gas energy is not wasted or trapped
Cooler cylinder temperatures
Lower exhaust temperatures
Leaner air/fuel ratio
Better pressure distribution in the exhaust ports and more efficient delivery of exhaust gas energy to the turbocharger's turbine
Veloster’s twin-scroll turbo has superior handling of exhaust gas separation at the turbine leading to improved low-end torque and faster transient torque response.
Two key features of Hyundai’s twin-scroll turbocharger setup are:
The stainless steel exhaust manifold and the twin-scroll turbine housing are cast in a patent pending one-piece design
The waste-gate for the turbocharger uses a motor-driven electrical controller instead of being mechanically controlled
Thanks to the integrated stainless-steel turbine housing with the exhaust manifold, not only is the weight and cost of the casting dramatically reduced, the durability of the turbine housing is also improved. In addition, heat energy recovery and thus turbo efficiency is significantly improved based on the fact that a traditional two-piece design effectively insulates some of the heat energy at the joint/gasket area.
By adapting the motor-driven electrical waste-gate, the boost pressure is precisely controlled. The back pressure is reduced when turbo boost is not necessary by opening the waste-gate, which improves fuel efficiency. During cold starts, the waste-gate remains open, which results in faster catalyst light-off for reduced exhaust emissions.
A GDI fuel delivery system contributes to improved fuel efficiency and lower emissions. This shorter, more direct path of fuel delivery allows for greater control of the fuel mixture at the optimum moment, thus improving efficiency. The fuel is injected by a camshaft-driven, high pressure pump that operates at pressures up to 2175 psi. Direct injection also utilizes a higher-than-normal 9.5 compression ratio, while achieving a best-in-class 125.6 horsepower-per-liter. The piston heads are “dished” to increase combustion efficiency in the cylinder.
Photos
Spécifications
Standard Features
C'est rare que les press kits sortent sur le web de la sorte, y'a beaucoup beaucoup beaucoup d'infos de disponibles.
Mon avis ?
À voir les chiffres de consommation je serais porté à dire que ça va encore être mal gearé, du moins pour la performance. Les rapports de boite feront sûrement en sorte que ce sera très économique lorsque roulé selon les limites de vitesse établies.
Je m'attends à ce que les performances se retrouvent environ à mi-chemin entre la GTI et la Si de Honda... Encore une fois, seulement mon guess-timate
Content de voir qu'Hyundai utilisent un turbo de type twin-scroll sur le 1.6 Gamma. C'est un bon set-up, sauf... que je ne suis vraiment pas certain du fait d'intégrer le housing du turbo directement au
J'ai un peu lu en diagonal mais il ne me semble pas avoir vu de prix d'annoncé nulle-part, je m'attends à ce que le modèle Turbo de base coûte environ 1500$ - 1800$ de plus que le "gros" modèle du Veloster actuel soit le Tech Package, ce qui placerait le prix de base du turbo aux alentours de 24 000$ - 25 000$ ... ( juste mon estimation )
Encore une fois package-wise ça semble être intéressant si on regarde l'équipement de base, je suis déçu des pneumatiques ( encore des Khumo ) et des changements de suspension qui semblent quasi-inexistants ( mis à part la taille de la sway-bar avant si ma mémoire est bonne ) et les freins semblent aussi avoir été oubliés au niveau des upgrades qui devraient être faits sur un modèle turbo-compressé ( bien qu'ils fassent très bien le travail sur le modèle atmosphérique )
Bref, donnons la chance au coureur, seul le temps saura nous dire si Hyundai réussira à claquer un coup de circuit sur ce modèle. Selon mon opinion, le Veloster turbo deviendra réellement intéressant lors de son prochain upgrade dans quelques années, laissons le temps à Hyundai de repasser les petits plis qui se retrouveront sûrement dans le package qui va sortir cet été.
