Hyundai Gamma engine

γ-engine
^{Gamma engine}
γ-engine; Gamma engine
Overview
Manufacturer	Hyundai Motor Company
Layout
Displacement	1.4 L (1,396 cc); 1.6 L (1,591 cc);
Cylinder bore	77 mm (3.03 in)
Piston stroke	75 mm (2.95 in); 85.4 mm (3.36 in)
Cylinder block material	Aluminium
Cylinder head material	Aluminium
Valvetrain	DOHC 4 valves x cyl. with CVVT
Compression ratio	9.5:1, 10.0:1, 10.5:1, 11.0:1, 13.0:1
Combustion
Turbocharger	Twin-scroll with intercooler (1.6 T-GDI (G4FJ) only)
Fuel system	GDI or MPI
Fuel type	Unleaded gasoline
Oil system	Pressure feed
Cooling system	Water-cooled
Output
Power output	99–201 hp (74–150 kW; 100–204 PS)
Torque output	13.8–27 kg⋅m (135–265 N⋅m; 100–195 lbf⋅ft)
Chronology
Predecessor	Alpha
Successor	Smartstream G1.6/G1.6T

The Hyundai Gamma engine was introduced in 2006 to replace the existing Hyundai Alpha engine.^[1] There are 1.4 L (1,396 cc) and 1.6 L (1,591 cc) versions of this engine. The most recent, "clean-sheet" iteration is the 2020 Gamma II which is part of the new Smartstream family, reverting to MPI (multiport injection) in lieu of GDI (gasoline direct injection) for the non-turbo version, and first debuting in the 2020 Hyundai Accent and Kia Rio and in the 2020 Hyundai Venue, each in the United States. The Gamma II is distinguished by CVVD which is the first introduction of "continuously variable valve duration" allowing control of the total length of time the intake valves are held open. ^[2] It can apparently run in Atkinson cycle (leaving intake open longer for more complete burn but less displacement ) under low loads for additional fuel economy with the ability to shift to Otto cycle on demand due to high loads or extra acceleration.

1.4 L

The G4FA is a 1.4 L (1,396 cc) engine. Bore and stroke is 77 mm × 75 mm (3.03 in × 2.95 in). It has MPI and makes 109 hp (81 kW; 111 PS) at 6,300 rpm and 101 lb⋅ft (137 N⋅m) of torque at 4,200 rpm. Power is dropped to 99 hp (74 kW; 100 PS) at 5,500 rpm and 100 lb⋅ft (136 N⋅m) of torque at 4,200 rpm in the Hyundai i20. The engine is equipped with continuously variable valve timing system CVVT on intake camshaft only.

1.6 L

Petrol engines
Model	Eng. code	Power	Torque	Comp.	Weight
1.6 Gamma GDi	G4FD	140 PS (103 kW; 138 hp) @ 6300 rpm	17 kg⋅m (167 N⋅m; 123 lbf⋅ft) @ 4850 rpm	11.0:1	150LB
1.6 Gamma MPi	G4FC	130 PS (96 kW; 128 hp) @ 6000 rpm	16 kg⋅m (157 N⋅m; 116 lbf⋅ft) @ 4850 rpm	10.5:1	150LB
1.6 Gamma MPi	G4FG	132 PS (97 kW; 130 hp) @ 6300 rpm	16 kg⋅m (157 N⋅m; 116 lbf⋅ft) @ 4850 rpm	10.5:1	150LB
1.6 Gamma T-GDI	G4FJ	177 PS (130 kW; 175 hp) @ 5500 rpm	27 kg⋅m (265 N⋅m; 195 lbf⋅ft) @ 1500-4500 rpm	9.5:1	155LB
1.6 Gamma T-GDI	G4FJ	204 PS (150 kW; 201 hp) @ 6000 rpm	27 kg⋅m (265 N⋅m; 195 lbf⋅ft) @ 1750-4500 rpm	9.5:1	155LB
1.6 Gamma T-GDI	G4FJ	204 PS (150 kW; 201 hp) @ 6000 rpm	27 kg⋅m (265 N⋅m; 195 lbf⋅ft) @ 1500-4500 rpm	10.0:1	155LB

Liquefied Petroleum Gas engines
Model	Eng. code	Displ.	Bore × Stroke	Power	Torque	Comp.
1.6 Gamma LPI	L4FA	1.6 L (1,591 cc)	77 mm × 85.4 mm (3.03 in × 3.36 in)	105 PS (77 kW; 104 hp) @ 5700 rpm	15.1 kg⋅m (148 N⋅m; 109 lbf⋅ft) @ 4000 rpm	13.0:1
		electric motor	—	44 PS (32 kW; 43 hp) @ 1850-2500 rpm	17.3 kg⋅m (170 N⋅m; 125 lbf⋅ft) @ 0-1800 rpm	—
		combined	—	138 PS (101 kW; 136 hp) @ 5700 rpm	27 kg⋅m (265 N⋅m; 195 lbf⋅ft) @ 4000 rpm	13.0:1

1.6 Gamma GDi (G4FD)

The 1.6 Gamma GDi engine Gasoline direct injection, and Dual-Continuous Variable Valve Timing.^[3] Power output to 138 hp (103 kW; 140 PS) at 6300 rpm and 123 lb⋅ft (167 N⋅m) at 4850 rpm.^[4]

Applications:

1.6 Gamma MPi (G4FC)

The Gamma MPI version makes 122 hp (91 kW; 124 PS) at 6,000 rpm and 115 lb⋅ft (156 N⋅m) of torque at 4,200 rpm.

The Gamma II MPI version with dual CVVT (continuous variable valve timing) makes 128 hp (95 kW; 130 PS) at 6,000 rpm with 116 lb⋅ft (157 N⋅m) of torque at 4,850 rpm.

1.6 Gamma MPi (G4FG)

The Gamma II MPI version with dual CVVT (continuous variable valve timing) makes 132 hp (98 kW; 134 PS) at 6,300 rpm with 116 lb⋅ft (157 N⋅m) of torque at 4,850 rpm.

1.6 Gamma T-GDI (G4FJ)

It is a version of 1.6 Gamma GDi with twin-scroll turbocharger, air guided intercooler, direct fuel injection system and dual CVVT.

The engine was unveiled in the 11th Hyundai-Kia International Powertrain Conference.^[5]

The engine has been revised in the 2nd Generation Veloster Turbo to include a new pressurized cooling system, higher compression ratio of 18, electronically actuated wastegate, and a new ECU (CPEGD2.20.3).

1.6 Gamma LPI (L4FA)

It is a hybrid variant with liquefied petroleum gas engine and electric motor.

It was used in Kia Forte, Hyundai Avante LPI hybrid,^[6] Kia Forte LPi, Hyundai Avante LPi (Korea domestic only)

Usage

References

^ Hyundai Kia Gamma G4F Petrol engine
^ https://www.wardsauto.com/10-best-engines-propulsion-systems/hyundai-s-16l-turbo-4-sophisticated-remarkably-efficient
^ "Archived copy" (PDF). Archived from the original (PDF) on 2016-03-03. Retrieved 2011-07-10.{{cite web}}: CS1 maint: archived copy as title (link)
^ http://www.hyundaiusa.com/accent/specifications.aspx
^ Hyundai Motor Group Unveils Advanced Powertrains at the ‘2011 Hyundai-Kia International Powertrain Conference’
^ Kia Motors introduces Eco Dynamics Brand and LPI Hybrid for Korean market
^ "Hyundai Creta is the official name for the ix25 compact SUV". India Car News. Retrieved 2017-07-13.

[1] Hyundai Kia Gamma G4F Petrol engine

[2] ttps://www.wardsauto.com/10-best-engines-propulsion-systems/hyundai-s-16l-turbo-4-sophisticated-remarkably-efficient

[3] "Archived copy" (PDF). Archived from the original (PDF) on 2016-03-03. Retrieved 2011-07-10.{{cite web}}: CS1 maint: archived copy as title (link)

[4] ttp://www.hyundaiusa.com/accent/specifications.aspx

[5] Hyundai Motor Group Unveils Advanced Powertrains at the ‘2011 Hyundai-Kia International Powertrain Conference’

[6] Kia Motors introduces Eco Dynamics Brand and LPI Hybrid for Korean market

[7] "Hyundai Creta is the official name for the ix25 compact SUV". India Car News. Retrieved 2017-07-13.

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