Hyundai U engine
The Hyundai U engine is a series of three or four-cylinder diesel engines made for automotive applications by the Hyundai Kia Automotive Group. The U series of engines includes the smallest automotive diesel engines produced by Hyundai.
| Hyundai U engine | |
|---|---|
| Overview | |
| Manufacturer | Hyundai Motor Group |
| Production | 2004–present |
| Layout | |
| Configuration | Straight-3 or Straight-4 |
| Displacement | 1.1 L (1,120 cc) 1.2 L (1,186 cc) 1.4 L (1,396 cc) 1.5 L (1,493 cc) 1.6 L (1,582 cc) 1.7 L (1,685 cc) |
| Cylinder bore | 75 mm (2.95 in) 77.0 mm (3.03 in) 77.2 mm (3.04 in) |
| Piston stroke | 79 mm (3.11 in) 84.5 mm (3.33 in) 85.8 mm (3.38 in) 90 mm (3.54 in) |
| Cylinder block material | Cast iron |
| Cylinder head material | Aluminum |
| Valvetrain | DOHC 4 valves x cyl. |
| Compression ratio | 17.0:1, 17.3:1 |
| Combustion | |
| Turbocharger | Fixed or variable geometry |
| Fuel system | Common rail direct injection |
| Management | Delphi or Bosch |
| Fuel type | Diesel |
| Cooling system | Water-cooled |
| Output | |
| Power output | 71–141 PS (52–104 kW; 70–139 hp) |
| Torque output | 15.6–34.7 kg⋅m (153–340 N⋅m; 113–251 lbf⋅ft) |
| Chronology | |
| Predecessor | Hyundai D engine |
| Successor | Smartstream D1.5/D1.6 |
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