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γ-engine Gamma engine | |
|---|---|
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| Overview | |
| Manufacturer | Hyundai Motor Company |
| Production | 2006–present |
| Layout | |
| Displacement |
|
| Cylinder bore | 77 mm (3.03 in) |
| Piston stroke | 75 mm (2.95 in) 85.4 mm (3.36 in) |
| Cylinder block material | Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | DOHC 4 valves x cyl. with CVVT |
| Compression ratio | 9.5:1, 10.0:1, 10.5:1, 11.0:1, 13.0:1 |
| RPM range | |
| Idle speed | 660~750 rpm |
| Combustion | |
| Turbocharger | Twin-scroll with intercooler (1.6 T-GDI) |
| Fuel system | Gasoline direct injection Multi-point fuel injection |
| Fuel type | Unleaded gasoline |
| Oil system | Pressure feed |
| Cooling system | Water-cooled |
| Output | |
| Power output | 100–204 PS (74–150 kW; 99–201 hp) |
| Torque output | 13.8–27 kg⋅m (135–265 N⋅m; 100–195 lbf⋅ft) |
| Dimensions | |
| Length | 483 mm (19.0 in) (MPi) 603.1 mm (23.74 in) (GDi/T-GDi/FFV) |
| Width | 613 mm (24.1 in) (MPi) 695 mm (27.4 in) (GDi/FFV) 754.5 mm (29.70 in) (T-GDi) |
| Height | 621 mm (24.4 in) (MPi) 638 mm (25.1 in) (GDi/FFV) 641.5 mm (25.26 in) (T-GDi) |
| Dry weight | 101.7–102.1 kg (224–225 lb) (MPi) 106.1 kg (234 lb) (GDi) 130.4 kg (287 lb) (T-GDi) 100.5 kg (222 lb) (FFV) |
| Chronology | |
| Predecessor | Alpha |
| Successor | Smartstream G1.6/G1.6T |
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The Hyundai Gamma engine was introduced in 2006 to replace the existing Hyundai Alpha engine.[1] There are 1.4 L and 1.6 L versions of this engine.
The Gamma II can apparently run in Atkinson cycle (leaving intake open longer for more complete burn but less displacement) under low loads for additional fuel economy with the ability to shift to Otto cycle on demand under high loads or for extra acceleration.[citation needed]