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| Family Z engine | |
|---|---|
| Overview | |
| Manufacturer | General Motors |
| Production | 2010-2015 |
| Layout | |
| Configuration | Inline-4 |
| Displacement |
|
| Cylinder bore | 86 mm (3.39 in) |
| Piston stroke |
|
| Cylinder block material | Cast iron |
| Cylinder head material | Aluminum |
| Valvetrain | DOHC |
| Compression ratio | 16.3:1, 16.5:1 |
| Combustion | |
| Turbocharger | Variable-geometry |
| Fuel system | Common raildirect injection |
| Fuel type | Diesel |
| Oil system | Wet sump |
| Cooling system | Water-cooled |
| Output | |
| Power output | 96–135 kW (131–184 PS; 129–181 hp) |
| Torque output | 315–400 N⋅m (232–295 lb⋅ft) |
| Chronology | |
| Predecessor | VM Motori RA 420 |
| Successor | GM Family B engine |
TheGM Family Z engine is aturbochargedcommon raildiesel engine produced byGeneral Motors Korea since 2010. It replacedVM Motori RA 420 diesel engine in a number of GM applications, such as the diesel versions of vehicles sold asChevrolet made for North America,Daewoo made for Korea,Opel made for Europe andHolden made for Australia.
The engine featureschain drivenDOHC valvetrain with hydraulic tensioners, twinbalance shafts in the oil pump and electronically controlledvariable-geometry turbocharger; the common rail system operates at pressures of up to 1,800 bar (26,000 psi), maximum in-cylinder pressure is 180 bar (2,600 psi), improving on power and torque. Compression ratio is 16.5:1.
For 2012, compression ration is reduced to 16.3:1, and a new intake port increases air flow and swirl control, improvingnitrogen oxide (NOx) emissions and performance.[1]
| Displacement | Power | Torque | Code/RPO | Years |
|---|---|---|---|---|
| 2.0 L (1,998 cc) VCDi | 120 kW (163 PS; 161 hp) at 3800 rpm | 360 N⋅m (266 lb⋅ft) at 2000 rpm | Z20D1, LNP | 2011–2015 (Chevrolet) 2010-2013 (Opel) |
2.2 L (2,231 cc) VCDi | 120 kW (163 PS; 161 hp) at 3800 rpm | 360 N⋅m (266 lb⋅ft) at 2000 rpm | A22DM, LNQ/LNR | |
| 135 kW (184 PS; 181 hp) at 3800 rpm | 400 N⋅m (295 lb⋅ft) at 2000 rpm | A22DMH, LNQ/LNS |
| Displacement | Power | Torque | Years |
|---|---|---|---|
| 2.0 L (1,998 cc)VCDi | 120 kW (163 PS; 161 hp) @ 3800 rpm | 360 N⋅m (266 lb⋅ft) @ 1750-2750 rpm | 2011–2015 |
| Displacement | Power | Torque | Years |
|---|---|---|---|
| 2.0 L (1,998 cc)VCDi | 120 kW (163 PS; 161 hp) @ 4000 rpm | 350 N⋅m (258 lb⋅ft) @ 1750 rpm | 2012–2015 |
| Displacement | Power | Torque | Years |
|---|---|---|---|
| 2.0 L (1,998 cc)VCDi | 120 kW (163 PS; 161 hp) @ 3800 rpm | 350 N⋅m (258 lb⋅ft) @ 2000 rpm | 2012–2015 |
| 96 kW (131 PS; 129 hp) @ 3800 rpm | 315 N⋅m (232 lb⋅ft) @ 2000 rpm |
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