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Hyundai Alpha engine#G4ED

{{Infobox automobile engine

| name = Hyundai Alpha α-series

| image =

| aka =

| manufacturer = Hyundai Motors

| configuration = Inline-4

| displacement = {{ubl |{{cvt|1341|cc|L|1|order=flip}}|{{cvt|1399|cc|L|1|order=flip}}|{{cvt|1495|cc|L|1|order=flip}}|{{cvt|1599|cc|L|1|order=flip}} }}

| bore = {{ubl |71.5 mm (1.3L)|75.5 mm (1.4/1.5L)|76.5mm (1.6L) }}

| stroke = {{ubl |78.1 mm (1.4L)|83.5 mm (1.3/1.5L)|87 mm (1.6L) }}

| block = Cast Iron

| head = Aluminum alloy

| valvetrain = SOHC
DOHC

| fuelsystem = Carbureted
Electronic Fuel Injection

| fueltype = Gasoline

| oilsystem = Wet sump

| coolingsystem = Liquid-cooled

| power = {{cvt|72|-|129|PS|kW hp|0}}

| torque = {{cvt|11.2|-|18.3|kgm|lbft Nm|0}}

| compression = 7.5:1–10.0:1

| predecessor =

| successor = Gamma

| production = 1992–2011

| idle = 700-800 ± 100 RPM

}}

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.{{Cite journal|last=Lee|first=Hyun Soon|last2=Rho|first2=Il Hyun|date=1989-11-01|title=The Design and Development of the Hyundai Alpha Engine|url=https://www.sae.org/publications/technical-papers/content/891185/|journal=5th International Pacific Conference on Automotive Engineering|language=English|location=Warrendale, PA|publisher=Hyundai Motor Co.}}

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.

Alpha

={{anchor|G4EA}} 1.3L CON (G4EA)=

File:Hyundai G4EH engine 1.jpg

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 {{cvt|72|PS|kW hp}} at 5,500 rpm and {{cvt|11.2|kg.m}} at 3,000 rpm. The 1.3 L engine was not sold in North America.

;Applications

={{anchor|G4EH}} 1.3L EFI (G4EH)=

The G4EH is a fuel injected version of the Alpha G4EA. Output is {{cvt|85|PS|kW hp}} at 5,500 rpm and {{cvt|12|kg.m|0}} at 3,000 rpm. The 1.3 L EFI engine was not sold in North America.

;Applications

={{anchor|G4EK}} 1.5L (G4EK)=

The G4EK is a fuel injected SOHC 12-valve engine. Output is {{cvt|88|PS|kW hp}} with {{cvt|13.5|kg.m|0}} of torque for the European market and {{cvt|93|PS|kW hp}} with {{cvt|13.5|kg.m|0}} of torque for the North American market.

;Applications

={{anchor|G4EC|G4FK}} 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 {{cvt|102|PS|kW hp}} at 5,800 rpm and {{cvt|13.6|kg.m|0}} at 3,000 rpm and was later increased to {{cvt|107|PS|kW hp}} at 6,000 rpm and {{cvt|13.8|kg.m|0}} at 4,500 rpm.

;Applications

={{anchor|G4EKT}} 1.5L Turbo (G4EK Turbo)=

The engine makes {{cvt|115|-|129|PS|kW hp|0}} at 5,500 rpm and {{cvt|17|-|18.3|kgm|Nm lbft|0}} of torque at 4,500 rpm depending on market.

;Applications

Alpha II

={{anchor|G4EE}} 1.4L (G4EE)=

The DOHC 1.4 L (1399 cc) 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 {{cvt|95|PS|kW hp}} at 6,000 rpm and {{cvt|12.7|kg.m}} at 4,700 rpm.

;Applications

={{anchor|G4ED}} 1.6L (G4ED)=

The Hyundai Alpha-II G4ED is an in-line 4, spark-ignition 4-stroke, dual overhead camshaft (DOHC) with 16 valves. The engine's

advertised power is Output is {{cvt|105-112|PS|kW hp}} at 6,000 rpm and {{cvt|14.6-14.9|kg.m|0}} at 4,500 rpm.

Post 2005 models feature Hyundai's variable valve timing technology (CVVT)

Specification:

Bore: {{cvt|76.5|mm|2}}

Stroke: {{cvt|87|mm|2}}

Total displacement: {{cvt|1599|cc}}

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 (L x W x H): 465mm x 572mm x 654mm

Weight (dry): {{cvt|118.2|kg|1}}

Alternator: 13.5V/90A

Starter motor: 12V/0.9KW

;Applications

See also

References

{{Reflist}}

External links

{{commons cat}}

  • [http://www.carfolio.com/specifications/models/car/?car=34320 1992 Hyundai S-Coupé LS specifications - Carfolio.com]
  • [http://www.carfolio.com/specifications/models/car/?car=34276 1992 Hyundai S-Coupé GT specifications - Carfolio.com]
  • [https://www.autoserviceworld.com/carsmagazine/hyundai-1-6-alpha/ Hyundai 1.6L Alpha Engine]
  • [https://www.hyundainews.com/en-us/releases/1296 Hyundai Accent History]
  • [https://www.hyundainews.com/en-us/releases/1035 2006 Hyundai Accent Press Release]

{{Hyundai engine timeline}}

{{DEFAULTSORT:Hyundai Alpha Engine}}

Alpha

Category:1992 introductions

Category:Straight-four engines