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.
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 , maximum in-cylinder pressure is , 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 () emissions and performance.
Chevrolet Captiva/Opel Antara Displacement Power Torque Code/RPO Years VCDi at 3800 rpm at 2000 rpm Z20D1, LNP2011–2015 (Chevrolet)2010-2013 (Opel) VCDi at 3800 rpm at 2000 rpm A22DM, LNQ/LNR at 3800 rpm at 2000 rpmA22DMH, LNQ/LNS
Chevrolet Cruze Displacement Power Torque Years VCDi @ 3800 rpm @ 1750-2750 rpm 2011–2015
Chevrolet Malibu Displacement Power Torque Years VCDi @ 4000 rpm @ 1750 rpm 2012–2015
Chevrolet Orlando Displacement Power Torque Years VCDi @ 3800 rpm @ 2000 rpm2012–2015 @ 3800 rpm @ 2000 rpm
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