| ε-engine Epsilon engine | |
| Manufacturer: | Hyundai Motor Company |
| Configuration: | Straight-3 Straight-4 |
| Valvetrain: | SOHC 2 or 3 valves x cyl. |
| Successor: | Kappa |
| Fueltype: | Gasoline LPG |
| Fuelsystem: | Fuel injection |
| Coolingsystem: | Water-cooled |
| Turbocharger: | Yes (0.8L TCI) |
Hyundai's Epsilon engine is a category of small inline gasoline automobile engines.
The G3HA and G3HG engines are a 3-cylinder, 9 valves, SOHC, version with a bore and stroke. Output is at 5,500 rpm and at 4,000 rpm.[1] This engine has been used in Hyundai's small hatchback Hyundai Eon. As the name suggests, this engine is a G4HG engine with one fewer cylinders mainly designed for high fuel efficiency.
The G4HA is a 4-cylinder, version with a bore and stroke. Output is at 6,000 rpm and at 4,000 rpm.
The L4HA is a 4-cylinder, LPG version with a bore and stroke. Output is at 6,000 rpm and at 4,000 rpm.
The G4HA is a turbocharged 4-cylinder, version with a bore and stroke. Output is at 6,000 rpm and at 4,000 rpm.
The G4HC/G4HE is a 4-cylinder 3 valves per cylinder engine that displaces with a larger bore and stroke.
The G4HC power is at 5,700 rpm and at 3,000 rpm. This engine has been used in Hyundai's Hatchback Atos/Santro.
The G4HE power is at 5,600–6,000 rpm and at 4,500 rpm. This engine has been used in the Kia Picanto.
The L4HE is a 4-cylinder, LPG version with a bore and stroke. Output is at 5,600–6,000 rpm and at 3,000–4,500 rpm.
The G4HD/G4HG is a 4-cylinder 3 valves per cylinder engine that displaces with a larger bore and stroke. 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 and idle RPMs are 750± 100.
The G4HD power is at 5,500 rpm and at 2,800 rpm.
The G4HG power is at 5,500 rpm and at 2,800–4,500 rpm.[2]
The CNG version of the engine is rated at 5,500 rpm and at 4,500 rpm.