| R engine | |
| Manufacturer: | Hyundai Motor Group |
| Production: | 2009–present |
| Configuration: | Inline-4 |
| Fueltype: | Diesel oil |
| Fuelsystem: | Common rail direct injection |
| Coolingsystem: | Water-cooled |
| Management: | Bosch with air system-based charge control |
| Block: | Compacted graphite iron |
| Head: | Aluminum |
| Valvetrain: | DOHC 4 valves x cyl. |
| Turbocharger: | Variable geometry |
| Displacement: | 1995cc 2199cc |
| Bore: | 84mm 85.42NaN2 |
| Stroke: | 902NaN2 962NaN2 |
| Power: | NaNPS |
| Torque: | NaNabbr=on0abbr=on |
| Predecessor: | Hyundai D engine |
| Successor: | Smartstream D2.0/D2.2 |
| Emissions Level: | Euro 5 Euro 6 |
The Hyundai R engine is a diesel 4-cylinder automobile engine produced by Hyundai Motor Group, it was announced during the Advanced Diesel Engine Technology Symposium in November 2008 and began production in 2009.[1]
The R line of engines feature four cylinders compacted graphite iron block and aluminum cylinder head unit, with chain driven dual overhead camshafts operating four valves per cylinder. Fuel is supplied to the unit using Bosch 3rd-generation common rail direct injection (CRDi) through piezoelectric injectors operating at 1800abbr=onNaNabbr=on, with air being fed through an electronically managed variable geometry turbocharger and an advanced engine control unit (air system-based charge control).
For reduced vibration and lower booming noise, the R gets a lower balancer shaft which is encased in a stiffened ladder frame housing for increased rigidity. Weight saving features include a 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.
The D4HA Bore and Stroke are NaN2NaN2 for a total displacement of 1995cc. It generates 184- of power at 4,000 rpm and 40- of torque between 1,750 and 2,750 rpm.
Bore and Stroke are NaN2NaN2 for a total displacement of 2199cc.
The D4HB generates 193- of power at 3,800 rpm and 44.5- of torque between 1,750 and 2,750 rpm. A detuned version that makes 1770NaN0 of power at 3,800 rpm and 44.5kgm of torque between 1,500 and 2,500 rpm is also available.
Bore and Stroke are NaN2NaN2 for a total displacement of 2199cc.
For RWD based applications, the D4HC generates 2020NaN0 of power and 45kgm of torque between 1,750 and 2,750 rpm.