GM Family Z engine

Family Z engine
Overview
Manufacturer General Motors
Layout
Configuration I4
Displacement
  • 1,998 cc (121.9 cu in)
  • 2,231 cc (136.1 cu in)
Cylinder bore 86 mm (3.4 in)
Piston stroke
  • 86 mm (3.4 in)
  • 96 mm (3.8 in)
Cylinder block alloy Cast iron
Cylinder head alloy Aluminum
Valvetrain DOHC
Compression ratio
  • 16.3:1
  • 16.5:1
Combustion
Fuel system Direct injection
Fuel type Diesel
Oil system Wet sump
Cooling system Water-cooled
Output
Power output 96–135 kW (129–181 hp)
Torque output 315–400 N⋅m (232–295 lb⋅ft)
Chronology
Predecessor VM Motori RA 420

Family Z 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 1,800 bar, maximum in-cylinder pressure is 180 bar, 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 (NOx) emissions and performance.[1]

Chevrolet Captiva/Opel Antara

Engine Power Torque Years
2.0 L (1,998 cc) VCDi I4 (t/c) 120 kW (163 PS; 161 hp) @ 3800 rpm 400 N⋅m (295 lb⋅ft) @ 2000 rpm 2011– (Chevrolet)
2010- (Opel)
2.2 L (2,231 cc) VCDi I4 (t/c) 135 kW (184 PS; 181 hp) @ 3800 rpm 400 N⋅m (295 lb⋅ft) @ 2000 rpm 2011– (Chevrolet)
2010- (Opel)

Chevrolet Cruze

Engine Power Torque Years
2.0 L (1,998 cc) VCDi I4 (t/c) 120 kW (163 PS; 161 hp) @ 3800 rpm 360 N⋅m (266 lb⋅ft) @ 1750-2750 rpm 2011–

Chevrolet Malibu

Engine Power Torque Years
2.0 L (1,998 cc) VCDi I4 (t/c) 120 kW (163 PS; 161 hp) @ 4000 rpm 350 N⋅m (258 lb⋅ft) @ 1750 rpm 2012–

Chevrolet Orlando

Engine Power Torque Years
2.0 L (1,998 cc) VCDi I4 (t/c) 120 kW (163 PS; 161 hp) @ 3800 rpm 350 N⋅m (258 lb⋅ft) @ 2000 rpm 2012–
96 kW (131 PS; 129 hp) @ 3800 rpm 315 N⋅m (232 lb⋅ft) @ 2000 rpm 2012–

See also

References

  1. ↑ "General Motors India Launches All-New Chevrolet Cruze". Media.gm.com. Retrieved 24 May 2018.
  • "GM Powertrain OEM Sales - Marine, Industrial, Off-Road, and On-Road". Gmpowertrain.com. Retrieved 24 May 2018.


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