Hyundai Epsilon engine

Hyundai's Epsilon engine is a category of small Straight Inline Gasoline automobile engines.

ε-engine
  Epsilon engine
Hyundai Epsilon 999cc L4 engine (G4HC)
Overview
ManufacturerHyundai Motor Company
Layout
ConfigurationStraight-3 & Straight-4
Displacement0.8 L (798 cc)
0.8 L (814 cc)
1.0 L (999 cc)
1.1 L (1,086 cc)
Cylinder bore63 mm (2.48 in)
66 mm (2.6 in)
67 mm (2.64 in)
Piston stroke64 mm (2.52 in)
73 mm (2.87 in)
77 mm (3.03 in)
ValvetrainSOHC 2 & 3 valves x cyl.
Combustion
Fuel systemFuel injection
Fuel typeGasoline
Cooling systemWater-cooled
Output
Power output54–64 hp (40–48 kW; 55–65 PS)
Torque output7.1–11.2 kg⋅m (70–110 N⋅m; 51–81 lbf⋅ft)
Chronology
SuccessorKappa

G4HA

The G4HA is a 4-cylinder, 0.8 L (798 cc) version with a 63 mm × 64 mm (2.48 in × 2.52 in) bore and stroke. Output is 54 hp (40 kW) at 6000 rpm and 7.1 kg⋅m (70 N⋅m; 51 lbf⋅ft) at 4800 rpm.

G4HC

The G4HC is a 4-cylinder 3 valves per cylinder engine and it displaces 1.0 L (999 cc) with a larger 66 mm × 73 mm (2.60 in × 2.87 in) bore and stroke. Power is 61 hp (45 kW) at 5700 rpm, but torque is up substantially to 11.2 kg⋅m (110 N⋅m; 81 lbf⋅ft) at 3000 rpm. This engine has been used in Hyundai's Hatchback Atos/Santro.

G4HG
1.1 Epsilon G4HG engine on Hyundai Atos/Santro.

The G4HG is a 4-cylinder 3 valves per cylinder, 1.1 L (1,086 cc) version with a 67 mm × 77 mm (2.64 in × 3.03 in)bore and stroke. Output is 69 PS (51 kW; 68 hp) at 5500 rpm and 9.9 kg⋅m (97 N⋅m; 72 lbf⋅ft) at 2800 rpm.[1] This engine has been used in Hyundai's i10 (PA), Atos, Santro Xing cars and Kia Picanto. Firing Order of this engine is 1-3-4-2 & idle RPMs are 750± 100.

G3HG

The G3HG is a 3-cylinder, 9 valves, SOHC, 0.8 L (814 cc) version with a 67 mm × 77 mm (2.64 in × 3.03 in)bore and stroke. Output is 56 PS (41 kW; 55 hp) at 5500 rpm and 7.6 kg⋅m (75 N⋅m; 55 lbf⋅ft) at 4000 rpm.[2] This engine has been used in Hyundai's new small hatchback Hyundai Eon. As the name suggests this G3HG engine is nothing but a G4HG engine with one fewer cylinders mainly designed for high fuel efficiency.

See also

References
  1. "Archived copy". Archived from the original on 2012-04-26. Retrieved 2011-12-27.CS1 maint: archived copy as title (link)
  2. http://www.hyundai.com/in/en/wcm/groups/webcontent/@in/documents/webbasiccontent/317259.pdf


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