Hyundai Alpha engine


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.
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.
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, a revised PCM, 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.

Alpha

1.3L CON (G4EA)

The G4EA is a carbureted SOHC 12-valve engine with a bore and stroke of 71.5 mm and 83.5 mm respectively. Output is at 5,500 rpm and at 3,000 rpm. The 1.3 L engine was not sold in North America.
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1.3L EFI (G4EH)

The G4EH is a fuel injected version of the Alpha G4EA. Output is at 5,500 rpm and at 3,000 rpm. The 1.3 L EFI engine was not sold in North America.
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1.5L (G4EB/G4EK)

The G4EB/G4EK is a fuel injected SOHC 12-valve engine. Output is with of torque for the European market and with of torque for the North American market.
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1.5L (G4EC/G4FK)

The G4EC/G4FK is an upgraded version of the Alpha G4EK with the addition of a DOHC cylinder head and 16 valves. Power output is at 5,800 rpm and at 3,000 rpm and was later increased to at 6,000 rpm and at 4,500 rpm.
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1.5L Turbo (G4EK Turbo)

The engine makes at 5,500 rpm and of torque at 4,500 rpm depending on market.
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Alpha II

1.4L (G4EE)

The DOHC 1.4 L G4EE 'Alpha II debuted in the 2005 European Kia Rio JB, but wasn't available in North America. It utilized the 75.5 mm bore of the original 1.5 L engine, but was destroked to 78.1 mm. Other design improvements of the 1.6 L G4ED carried over to the 1.4 L G4EE', except for CVVT. The engine was noted for its smoother, freer revving nature as compared to the larger 1.6 L due to its squarer bore:stroke dimensions. It also produced slightly improved fuel consumption at the expense of overall power output.
Power output is rated at 6,000 rpm and at 4,700 rpm.
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1.6L (G4ED)

The Hyundai Alpha-II G4ED is an in-line 4, spark-ignition 4-stroke, dual overhead camshaft with 16 valves. The engine's
advertised power is Output is at 6,000 rpm and at 4,500 rpm.
Post 2005 models feature Hyundai's variable valve timing technology
Specification:

Bore:

Stroke:

Total displacement:

Compression Ratio: 10.0:1

Firing Order: 1-3-4-2

Idle RPM: 750± 100

Ignition Timing at idle speed: BTDC 9° ± 5°/800 rpm

Size : 465mm x 572mm x 654mm

Weight :

Alternator: 13.5V/90A

Starter motor: 12V/0.9KW
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