GM Family Z engine

The GM Family Z engine is a turbocharged common rail diesel engine produced by General Motors Korea since 2010. It replaced VM Motori RA 420 diesel engine in a number of GM applications, such as the diesel versions of vehicles sold as Chevrolet made for North America, Daewoo made for Korea, Opel made for Europe and Holden made for Australia.

Family Z engine
Overview
Manufacturer	General Motors
Production	2010-2015
Layout
Configuration	Inline-4
Displacement	2.0 L; 121.9 cu in (1,998 cc) 2.2 L; 136.1 cu in (2,231 cc)
Cylinder bore	86 mm (3.39 in)
Piston stroke	86 mm (3.39 in) 96 mm (3.78 in)
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 rail direct 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

The engine features chain driven DOHC valvetrain with hydraulic tensioners, twin balance shafts in the oil pump and electronically controlled variable-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, improving nitrogen oxide (NO_x) emissions and performance.^[1]

Chevrolet Captiva/Opel Antara

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

Chevrolet Cruze

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

Chevrolet Malibu

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

Chevrolet Orlando

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