GM Family 0 engine

Family 0
Family 0
	Family 0 engine in an Opel Adam
Overview
Manufacturer	General Motors
Also called	Family Zero
Production	1996–2020
Layout
Configuration	Straight-3, Straight-4
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 material	Cast iron
Cylinder head material	Aluminium
Valvetrain	DOHC 4 valves x cyl. with VVT
Compression ratio	9.5:1, 10.1:1, 10.5:1
Combustion
Fuel system	Sequential MPFI
Fuel type	Gasoline, E85
Oil system	Wet sump
Cooling system	Water-cooled
Output
Power output	55–140 PS (40.5–103 kW)
Torque output	82–220 N⋅m (60–162 lb⋅ft)
Chronology
Predecessor	Opel OHV engine; GM Family 1 engine (1.0 – 1.4L);
Successor	Small Gasoline Engine

The Family 0 is a family of inline piston engines that was developed by Opel, at the time 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 (973 cc) straight-3 or 1.2 L (1,199 cc) straight-4; a 1.4 L (1,364 cc) I4 variant was added with the introduction of the second generation, replacing the 1.4 L Family 1 engine. The Family 0 engines were produced by Opel Wien in Vienna/Aspern (Austria), by GM in Bupyeong (Korea) and Flint (Michigan, USA).

In 2020, General Motors announced the discontinuation of the Family 0 line of engines after the 2020 model year. The 1.4L LUV was the last engine produced in this engine family.

Generation I

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)	10.1:1	40.5 kW (55 PS)	82 N⋅m (60 lb⋅ft) at 2800 rpm
Z10XE	1.0 L (973 cc)	I3		78.6 mm (3.1 in)		42.7 kW (58 PS)	85 N⋅m (63 lb⋅ft)
X12XE	1.2 L (1,199 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	1.2 L (1,199 cc)	I4		72.6 mm (2.9 in)	10.1:1	55 kW (75 PS) at 5600 rpm	110 N⋅m (81 lb⋅ft) at 4000 rpm

Applications:

Generation II

The second generation Family 0 began production in November 2002. It is an updated version of the Family 0 engine and 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. The crankshaft and oil galleries were also redesigned to lower power loss; thereby increasing 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 (1,229 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 (1,364 cc)	I4		80.6 mm (3.2 in)		66 kW (89 hp) at 5600 rpm	125 N⋅m (92 lb⋅ft) at 4000 rpm

Applications:

2003-2010 Opel/Vauxhall Combo C
2003-2006 Opel/Vauxhall Corsa C/Holden Barina (XC)
2006-2014 Opel/Vauxhall Corsa D
2004-2009 Opel/Vauxhall Tigra TwinTop
2004-2010 Opel/Vauxhall Astra H
2007-2009 Opel/Vauxhall Astra G Classic models
2003-2007 Opel/Vauxhall Agila
2004-2010 Opel/Vauxhall Meriva A

Generation III

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 the 1.0 L engine in 2010. For model year 2012, the EcoFlex engines have been updated with double cam phasing (DCVCP) in a Gen III block.

Certain 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 model year 2013, the overboost to 220 N⋅m (162 lb⋅ft) has been added.^[2]

In 2020, General Motors announced that this engine would be phased out and discontinued for the 2021 model year. The Buick Encore and Chevrolet Trax were the last vehicles to use this engine.^[3]

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
A12XEL (LWD)	1.2 L (1,229 cc)	I4		72.6 mm (2.9 in)		51 kW (68 hp) at 5600 rpm	115 N⋅m (85 lb⋅ft) at 4000 rpm
A12XER (LDC)	1.2 L (1,229 cc)			72.6 mm (2.9 in)		62 kW (83 hp) at 5600 rpm	115 N⋅m (85 lb⋅ft) at 4000 rpm
A14XFL (LUU)	1.4 L (1,398 cc)			82.6 mm (3.3 in)		63 kW (84 hp) at 4800 rpm	126 N⋅m (93 lb⋅ft) at 4800 rpm
A14XEL (L2Z)						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)						74 kW (99 hp) at 6000 rpm
A14NEL/B14NEL (LUH)	1.4 L (1,364 cc)		72.5 mm (2.85 in)		9.5:1	88 kW (118 hp) at 4800–6000 rpm	200 N⋅m (148 lb⋅ft) at 1850–4200 rpm 220 N⋅m (162 lb⋅ft) (Overboost)
A14NET (LUJ)						103 kW (138 hp) at 4900–6000 rpm	200 N⋅m (148 lb⋅ft) at 1850–4900 rpm 220 N⋅m (162 lb⋅ft) (Overboost)
U14NFT (LUJ)						103 kW (138 hp) at 4900–6000 rpm	200 N⋅m (148 lb⋅ft) at 1850–4900 rpm 220 N⋅m (162 lb⋅ft) (Overboost)
U14NFT (LUV)						103 kW (138 hp) at 4900 rpm	200 N⋅m (148 lb⋅ft) at 1850 or 2500 rpm
U14NFT (LUV - Vanderhall^[4])						134 kW (180 hp) at 4950 rpm^[4]	250 N⋅m (184 lb⋅ft) at 2450 rpm^[4]

Applications:

2011–2019 Opel/Vauxhall Corsa
2009–2015 Opel/Vauxhall Astra J
2010–2017 Opel/Vauxhall Meriva B
2011–2019 Opel/Vauxhall Zafira Tourer
2011–2015 Chevrolet Cruze
2016 Chevrolet Cruze Limited
2010–2015 Chevrolet Volt / Opel/Vauxhall Ampera
2012–2020 Chevrolet Aveo/Sonic
2013–2019 Opel Adam
2013–2016 Cadillac ELR
2013–2020 Buick Encore / Opel Mokka
2014–2020 Chevrolet/Holden Trax
2017–2019 Vanderhall Venice^[4]
2014 Roewe 950 fuel cell
2013-2015 Chevrolet Spin

References

^ General Motors Europe (May 2008). "A Look Into the Future of Engines and Transmissions". New 1.4 Turbo.
^ http://media.opel.com/media/intl/en/opel/news.detail.html/content/Pages/news/intl/en/2012/opel/06_15_new-astra-family.html
^ https://www.motor1.com/news/456925/2021-chevrolet-trax-new-engine/
^ ^a ^b ^c ^d https://vanderhallusa.com/venice/ (d/l 10-Jul-2019)

External links

http://www.gmpowertrain.com

[1.4_DI-1] General Motors Europe (May 2008). "A Look Into the Future of Engines and Transmissions". New 1.4 Turbo.

[2] ttp://media.opel.com/media/intl/en/opel/news.detail.html/content/Pages/news/intl/en/2012/opel/06_15_new-astra-family.html

[3] ttps://www.motor1.com/news/456925/2021-chevrolet-trax-new-engine/

[venice-4] ttps://vanderhallusa.com/venice/ (d/l 10-Jul-2019)

[1]

[2]

[3]

[4]

Generation I

Generation II

Generation III

See also

References

External links