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EcoFLEX

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.

These engines feature a light-weight cast-iron semi-closed deck engine block with an aluminum cylinder head. The valvetrain consists of chain-driven hollowcast dual overhead camshafts (DOHC) that actuate 4-valves per cylinder via roller finger followers with hydraulic tappets. These engines also feature a 78 mm (3.1 in) bore spacing and fracture-split connecting rods.

Later versions also incorporate a variable length intake manifold (VLIM) and variable valve timing (VVT).

Originally debuting as either a 1.0 L straight-3 or 1.2 L straight-4; a 1.4 L I4 variant was added with the introduction of the second generation, replacing the 1.4 L Family 1 engine. Currently, the Family 0 engines are produced in Aspern (Austria), Bupyeong (Korea) and Flint (Michigan, USA).

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.


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Wikipedia

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