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Hyundai Unveils New Concept Car HED-5 “i-Mode” With New Two-Stage Turbocharged Diesel Engine

The i-Mode concept.

At the Geneva Motor Show, Hyundai Motor Co. is introducing the HED-5 “i-Mode” concept. The 6-seater monocab study incorporates a new 2.2-liter two-stage turbocharged diesel engine that is planned for production in the first half of 2011 and lighter weight high-tech materials to reduce fuel consumption.

The engine in the i-Mode is an all-new 2.2-liter R diesel which first passes intake through a low-pressure turbocharger from which it is forced into a high-pressure turbocharger to deliver maximized boosts. The R engine delivers 158 kW (212 hp) of power and 461 Nm (340 lb-ft) peak torque respectively, for a power density in excess of 70 kW/L.

Rdiesel Rturbo
The new R diesel. The two-stage turbocharger.
Click to enlarge.

The R Engine is mated to a 6-speed automatic gearbox providing a smoother drive. Higher EGR capacity with stable combustion characteristics at high engine loads reduces NOx and PM emissions. The R engine is targeted to meet Euro 5 and 6 exhaust emissions standards.

The standard single turbocharged R engine will be launched in early 2009 followed by the two stage turbocharged version in the first half of 2011.

By working together with the partners Bayer MaterialScience AG, Keiper and LG Electronics, Hyundai is continuing a cross-industry co-operation to drive new technologies faster to market. The co-operation with Bayer MaterialScience enabled the complex curvature and radical design departures of the HED-5 innovations to be implemented more quickly. The materials used are lighter and more adaptable than the metal and glass they replace. This, in combination with a light weight body construction, reduces fuel consumption and CO2 emissions.

Self-healing water-based bodywork finishes from Bayer let minor scratches disappear. The i-Mode is the first vehicle to feature the new “BayVision” glazing system and Collimator headlight lenses made from Makrolon polycarbonate, permitting new headlight designs using LED technology.


Rafael Seidl

If someone had asked you who would be the second manufacturer to produce a sequential turbo diesel engine (after BMW), would you have said Hyundai? State of production is still a long three years away, but the Korean company is clearly in tune with market trends in Europe.

For Euro6 (due 2014), they may have to add a lean NOx trap in the exhaust.

Harvey D

A power density of 70 Kw/L?
Is that possible? If so, it could be ideal as a range extender in a PHEV?



Argonne National recently developed a ceramic based NOx trap, no?

Also, have you ever seen any concepts using an aerogel for impact absorption? Aerogels can absorb a massive amount of energy relative to their weight and could possibly aid in "adding lightness" to a vehicle.

I'm also shocked that Hyundai developed a sequential turbo in house. I would have figured that anyone outside of BMW or the VW group would have solicited the help of an engineering firm such as Ricardo.

Rafael Seidl

@ GreenPlease -

all of the LNTs I'm aware of use ceramic monoliths with washcoats, analogous to those used in three-way catalysts.

Aerogels have attractive properties but are incredibly expensive to manufacture. Afaik, their application has so far been limited to spacecraft.

Hyundai has access to engineering consultants when developing an engine, though like every other manufacturer, they may choose to award a contract and not advertise that fact. Where does it say they are doing the R&D for this all by themselves?


That power and torque profile, mated with a hybrid powertrain and heavy duty transmission would be perfect for a light (~5 tons) city delivery truck.

"...where does it say (they) are doing this all by themselves?"

Point taken.

Interesting to know about the LNTs, I recall that there was something special about the one from Argonne.

I recently eyed an article where a Cambridge trained chemical engineer had figured out a way to make aerogels from rice husks at 20% of current cost. 20% of a ton is still a lot, however.

I'll post the link when I get back to my desk.


They have come a long ways since they were buying older engine blueprints from Mitsubishi.


There is a new process of creating the silica for aerogels from rice hulls that is suppose to cost 80% less. This might advance several applications at the same time.

If someone had asked you who would be the second manufacturer to produce a sequential turbo diesel engine (after BMW), would you have said Hyundai?

Maybe BMW was not first and Hyundai is certainly not second. This is standard technology on the current 6.4 liter diesel in the Ford Super Duty pickups.

Justin VP

Was there any mention of T2B5 compliance for future release in the US market? Didn't sound like it.

stan peterson

Meeting the easy "psuedo-standards" like EU5 and EU6 is no great shakes, these days.

Meeting them three years from now is even more insignificant.

There is a veritable mile from EU5/6 to the entirely more rigorous T2B5 standard. These days, progress would be measured by meeting T2B5 and the, as yet unrequired but eventual need for, T2B2 emissions levels.

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