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Reciprocating internal combustion engine
θ engine Theta engine
Overview
Manufacturer
Hyundai Motor Company
Production
2004–present
Layout
Configuration
Inline-four
Displacement
110 cu in (1,798 cc) 122 cu in (1,998 cc) 144 cu in (2,359 cc)
Cylinder bore
86 mm (3.4 in) (2.0L) 88 mm (3.5 in) (2.4L)
Piston stroke
86 mm (3.4 in) (2.0L) 97 mm (3.8 in) (2.4L)
Cylinder block material
Aluminium
Cylinder head material
Aluminium
Valvetrain
DOHC
Compression ratio
10.5:1 (2.0 L) 10.3:1 (2.4 L MPi) 11.3:1 (2.4 L GDi) 9.5:1–10.0:1 (2.0 L T-GDi)
Combustion
Fuel system
MPI GDI
Management
EMS-II from Siemens VDO
Fuel type
Unleaded gasoline
Oil system
Pressure feed
Cooling system
Watercooled
Output
Power output
133–280 PS (98–206 kW; 131–276 hp)
Torque output
16.9–40 kg⋅m (166–392 N⋅m; 122–289 lbf⋅ft)
Dimensions
Dry weight
134 kg (295 lb) (2.0L) 146 kg (322 lb) (2.4L)
Chronology
Predecessor
Beta
Successor
Smartstream G2.5/G2.5T
The Hyundai Theta is a gasoline four-cylinder automobile engine family. The third all-aluminum engine of Hyundai Motor Company debuted in the fourth-generation Hyundai Sonata sedan (codenamed NF), which was unveiled in August 2004 in South Korea.[1] Hyundai Motor Manufacturing Alabama (HMMA) built a Theta II engine shop on the grounds of their Montgomery, Alabama automobile factory.
^"Hyundai's All-New Sonata Launched in Korea - Hyundai Newsroom".
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Theta engine