1.3 L (1,341 cc) 1.4 L (1,399 cc) 1.5 L (1,495 cc) 1.6 L (1,599 cc)
Cylinder bore
71.5 mm (1.3L) 75.5 mm (1.4/1.5L) 76.5mm (1.6L)
Piston stroke
78.1 mm (1.4L) 83.5 mm (1.3/1.5L) 87 mm (1.6L)
Cylinder block material
Cast Iron
Cylinder head material
Aluminum alloy
Valvetrain
SOHC DOHC
Compression ratio
7.5:1–10.0:1
RPM range
Idle speed
700-800 ± 100 RPM
Combustion
Fuel system
Carbureted Electronic Fuel Injection
Fuel type
Gasoline
Oil system
Wet sump
Cooling system
Liquid-cooled
Output
Power output
72–129 PS (53–95 kW; 71–127 hp)
Torque output
11.2–18.3 kg⋅m (81–132 lb⋅ft; 110–179 N⋅m)
Chronology
Successor
Gamma
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The Hyundai Alpha series is a multi-valve gasoline inline four-cylinder engine family comprising 1.3, 1.4, 1.5, and 1.6 L naturally aspirated versions and a 1.5 L turbocharged version. Introduced in 1992, this was Hyundai's first engine designed entirely in-house and was the first indigenous South Korean engine design. Design objectives were to provide high performance and good fuel economy with excellent durability at a reasonable cost.[1]
The first Alpha series engine marketed was the 1.5L SOHC 12-valve inline-four. It was offered in naturally aspirated and turbo versions and debuted in the 1992 Hyundai Scoupe. A 1.3L version debuted later in the Hyundai Accent.
A dual overhead camshaft (DOHC), four valve per cylinder version debuted in the 1996 Hyundai Accent GT.
A strengthened block, an eight-counterweight crankshaft, and hydraulic engine mounts were added from 2000-onward to reduce NVH (noise, vibration and harshness).
The 1.6L Alpha II debuted in 2001, eventually replacing the 1.3L and 1.5L. It was further revised in 2005 with a 1.4L version also debuting. Notable improvements over the Alpha included a DOHC 16-valve cylinder head, graphite-coated piston skirts, a strengthened cylinder block, ribbed aluminum oil pan, coil-on-plug ignition, an enlarged throttle body (increased from 48 mm to 52 mm), a revised PCM (powertrain control module), simplified and shortened intake ducting, a revised intake manifold, and a returnless fuel system. These improvements further reduced NVH and emissions, with the 1.6L version becoming ULEV-certified in all 50 U.S. states.
^Lee, Hyun Soon; Rho, Il Hyun (1989-11-01). "The Design and Development of the Hyundai Alpha Engine". 5th International Pacific Conference on Automotive Engineering. Warrendale, PA: Hyundai Motor Co.
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