The Euro-V compliant, common-rail lumps come in 2.0-liter and 2.2-liter flavors, each with piezo-electric fuel injectors and electronic variable geometry turbos. Refinement comes via an internal, silent steel timing chain and a lower balance shaft housed in a stiffened ladder-frame housing. Weight has also been reduced thanks to a head cover, intake manifold and oil filter housing all made from plastic.
The 2.0-liter R-Engine puts out 181 hp and 289 lb-ft. That compares to 170 hp and 258 lb-ft for Audi's 2.0-liter TDI. The 2.2 liter Hyundai diesel pushes 197 hp and 321 lb-ft. , which compares with 215 hp and 398 lb.-ft. for Mecedes' 3.2-liter BLUETEC CDI.
Hyundai says the first vehicles to get the new diesel R engine will be SUVs and large sedans sold in Europe. Unfortunately, there appear to be no plans to bring it to the U.S. where our diesel emissions standards are higher than the Old Country's, at least for now.
NEW HIGH-PERFORMANCE, LOW EMISSION DIESEL REVEALED BY HYUNDAI
- World-beating new 2.0 and 2.2-litre diesels
- Best fuel economy in 2.0-litre class
- Euro-5 compliant with 184 and 200PS
"R proves Hyundai's diesel development capabilities really are world-class. With diesels becoming cleaner and more fuel efficient all the time, there's a growing demand for diesel powerplants worldwide and Hyundai is well positioned to supply the market with the very best diesel technology," said Dr Hyun-Soon Lee, president of the Corporate Research and Development Division.
The R-Engine benefits from the third generation common rail system with piezo-electric injectors to deliver fuel at 1800-bar for an unprecedented degree of accuracy and control. It also features an electronic variable geometry turbocharger and an advanced engine control unit (air system-based charge control).
The all-aluminium R-Engine is fitted with a 16-valve dual overhead camshaft which is driven by an internal steel silent timing chain. For reduced vibration and lower noise, the R gets a lower balance shaft which has been encased in a stiffened ladder frame housing for increased rigidity. Weight saving features include serpentine belt with isolation pulley, a plastic head cover, plastic intake manifold and plastic oil filter housing.
To achieve Euro-5 emission compliancy, the R is fitted with a close-coupled diesel particulate filter plus highly efficient exhaust gas recirculation with by-pass valve.
Over 500 prototype engines were built during the 42 month-long development period which encompassed a wide variety performance and emissions tests, endurance as well as NVH, cooling and lubrication studies. Finally, the engine was installed in vehicles and subjected to exhaustive testing under all imaginable environmental conditions.
The R-Engine will enter production next year and will see its first application in new SUV vehicles and large saloons.