GM Family 0 engine

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Family 0
Opel Adam Motorraum.JPG
Family 0 engine in an Opel Adam
Overview
Manufacturer General Motors
Also called Family Zero
Production 1996-present
Combustion chamber
Configuration
Displacement
  • 973 cc (59.4 cu in)
  • 998 cc (60.9 cu in)
  • 1,199 cc (73.2 cu in)
  • 1,229 cc (75.0 cu in)
  • 1,364 cc (83.2 cu in)
  • 1,398 cc (85.3 cu in)
Cylinder bore
  • 72.5 mm (2.85 in)
  • 73.4 mm (2.89 in)
Piston stroke
  • 72.6 mm (2.86 in)
  • 78.6 mm (3.09 in)
  • 80.6 mm (3.17 in)
  • 82.6 mm (3.25 in)
Cylinder block alloy Cast iron
Cylinder head alloy Aluminium
Valvetrain Dual overhead cam
Compression ratio
  • 9.5:1
  • 10.1:1
  • 10.5:1
Combustion
Fuel system
Fuel type
Oil system Wet sump
Cooling system Water-cooled
Chronology
Predecessor
Successor Small Gasoline Engine

The Family 0 is a family of inline piston engines that was developed by Opel, a subsidiary of General Motors, as a low-displacement engine for use on entry-level subcompact cars from Opel/Vauxhall.

The engine features light cast-iron engine block, aluminum cylinder head with Hollowcast camshafts and DOHC valvetrains driven by chain. Modern versions use variable intake length and VVT.

The Family 0 engines are produced in Aspern (Austria), Bupyeong (Korea) and Flint (Michigan, USA).

First generation[edit]

The engine was first introduced in 1996 Opel Corsa, either as a three-cylinder or as a four-cylinder version. This was Opel's first three-cylinder engine.

Name Displacement Configuration Bore Stroke Compression Ratio Power Torque
X10XE 1.0 L (973 cc) I3 72.5 mm (2.9 in) 78.6 mm (3.1 in) 40 kW (55 PS) 82 N·m (60 lb·ft) at 2800 rpm
Z10XE 43 kW (58 PS) 85 N·m (63 lb·ft)
X12XE 1.2 L (1199 cc) I4 72.6 mm (2.9 in) 10.1:1 48 kW (65 PS) at 5600 rpm 110 N·m (81 lb·ft) at 4000 rpm
Z12XE 55 kW (75 PS) at 5600 rpm 110 N·m (81 lb·ft) at 4000 rpm

Applications:

TwinPort[edit]

New, updated version of the engine, introduced in 2003. Features TwinPort technology - twin intake ports with a choke closing one of the ports at low RPM, providing strong air swirl pattern for higher torque levels and better fuel economy.

Name Displacement Configuration Bore Stroke Compression Ratio Power Torque
Z10XEP 1.0 L (998 cc) I3 73.4 mm (2.9 in) 78.6 mm (3.1 in) 10.5:1 44 kW (59 hp) at 5600 rpm 88 N·m (65 lb·ft) at 3800 rpm
Z12XEP 1.2 L (1229 cc) I4 72.6 mm (2.9 in) 59 kW (79 hp) at 5600 rpm 110 N·m (81 lb·ft) at 4000 rpm
Z14XEP 1.4 L (1364 cc) 80.6 mm (3.2 in) 66 kW (89 hp) at 5600 rpm 125 N·m (92 lb·ft) at 4000 rpm

Applications:

EcoFlex[edit]

The EcoFlex engine is a version of the TwinPort tuned to provide better fuel economy and lower emissions. The 1.4 L engine was introduced in 2008 and 1.0 L engine in 2010.

Name Displacement Configuration Bore Stroke Compression Ratio Power Torque
A10XEP (LDB) 1.0 L (998 cc) I3 73.4 mm (2.9 in) 78.6 mm (3.1 in) 10.5:1 48 kW (64 hp) at 5300 rpm 90 N·m (66 lb·ft) at 4000 rpm

For model year 2012, the EcoFlex engines have been updated with double cam phasing (DCVCP) in a Gen III block.

Name Displacement Configuration Bore Stroke Compression Ratio Power Torque
A12XEL (LWD) 1.2 L (1229 cc) I4 73.4 mm (2.9 in) 72.6 mm (2.9 in) 10.5:1 51 kW (68 hp) at 5600 rpm 115 N·m (85 lb·ft) at 4000 rpm
A12XER (LDC) 62 kW (83 hp) at 5600 rpm
A14XEL (L2Z) 1.4 L (1398 cc) 82.6 mm (3.3 in) 64 kW (86 hp) at 6000 rpm 130 N·m (96 lb·ft) at 4000 rpm
A14XER (LDD) 74 kW (99 hp) at 6000 rpm
A14XFR (L2N)
A14XFL (LUU) 63 kW (84 hp) at 4800 rpm

Applications:

Turbo[edit]

Opel and US-market Chevrolet versions of the Delta II platform compact cars use a turbocharged version of the 1.4 L engine with double variable cam phasing (DCVCP); in the future, an optional gasoline direct injection system will be introduced.[1] Opel versions feature Start&Stop system from 2011 and a Gen III block; a lower-power 120 ps version has been introduced as well. For MY 2013, the overboost to 220 Nm has been added.[2]

Name Displacement Configuration Bore Stroke Compression Ratio Power Torque Overboost Torque
A14NEL (LUH) 1.4 L (1364 cc) I4 72.5 mm (2.85 in) 82.6 mm (3.3 in) 9.5:1 88 kW (118.0 hp) at 4800-6000 rpm 200 N·m (148 lb·ft) at 1850-4200 rpm 220 N·m (162 lb·ft)
A14NET (LUJ) 103 kW (138.1 hp) at 4900-6000 rpm 200 N·m (148 lb·ft) at 1850-4900 rpm
(LUV) 103 kW (138.1 hp) at 4900 rpm 200 N·m (148 lb·ft) at 1850 or 2500 rpm

Applications:

HCCI[edit]

At Tech Show Torino 2008, GM Powertrain Europe announced the ignition-less HCCI (Homogeneous Charge Compression Ignition) mode of the direct injection version of 1.4 L VVT turbocharged engine.[3] HCCI version is equipped with two-step adjustable valve lift with variable cam phasing and advanced ECU with cylinder pressure sensors, uses lean burn cycle similar to that of a diesel engine, and is claimed to further reduce fuel consumption by 15%.

See also[edit]

References[edit]

External links[edit]