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Hyundai U engine

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Hyundai U engine
Overview
ManufacturerHyundai Motor Group
Production2004–present
Layout
ConfigurationStraight-3 or Straight-4
Displacement1.1 L (1,120 cc)
1.2 L (1,186 cc)
1.4 L (1,396 cc)
1.5 L (1,493 cc)
1.6 L (1,582 cc)
1.7 L (1,685 cc)
Cylinder bore75 mm (2.95 in)
77.0 mm (3.03 in)
77.2 mm (3.04 in)
Piston stroke79 mm (3.11 in)
84.5 mm (3.33 in)
85.8 mm (3.38 in)
90 mm (3.54 in)
Cylinder block materialCast iron
Cylinder head materialAluminum
ValvetrainDOHC 4 valves x cyl.
Compression ratio17.0:1, 17.3:1
Combustion
TurbochargerFixed or variable geometry
Fuel systemCommon rail direct injection
ManagementDelphi or Bosch
Fuel typeDiesel
Cooling systemWater-cooled
Output
Power output71–141 PS (52–104 kW; 70–139 hp)
Torque output15.6–34.7 kg⋅m (153–340 N⋅m; 113–251 lbf⋅ft)
Chronology
PredecessorHyundai D engine
SuccessorSmartstream D1.5/D1.6

The Hyundai U engine is a series of three or four-cylinder diesel engines made for automotive applications by the Hyundai Kia Automotive Group. The U series of engines includes the smallest automotive diesel engines produced by Hyundai.[1]

1.1 L (D3FA)

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The 1.1 L (1,120 cc) U diesel engine is a 3-cylinder version of the 1.5L U series unit and is made with cast iron block and aluminum cylinder head with chain driven DOHC with 4 valves per cylinder, Delphi common rail direct injection (CRDi), variable geometry turbocharger (VGT) and intake air swirl control. Bore and Stroke are 75 mm × 84.5 mm (2.95 in × 3.33 in). It creates 71–75 PS (52–55 kW; 70–74 hp) at 4,000 rpm and 15.6–18.3 kg⋅m (153–179 N⋅m; 113–132 lbf⋅ft) of torque between 1,750 and 2,500 rpm.

It is one of Hyundai's most efficient engines with a fuel consumption of 4.2 L/100 km (67 mpg‑imp; 56 mpg‑US), and emits 112 g/km of CO2. The engine also incorporates a 1½ engine order balance shaft mounted under the crankshaft driven by helical gears to manage engine vibration.

Applications

1.2 L (D3FB)

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The 1.2 L (1,186 cc) U diesel engine utilizes three cylinders and is made with cast iron block and aluminum cylinder head with chain driven DOHC with 4 valves per cylinder. It produces 75 PS (55 kW; 74 hp) at 4,000 rpm and 19.4 kg⋅m (190 N⋅m; 140 lbf⋅ft) of torque between 1,750 and 2,250 rpm.

Applications

1.4 L (D4FC)

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The 1.4 L (1,396 cc) U diesel engine utilizes four cylinders and is made with cast iron block and aluminum cylinder head with chain driven DOHC with 4 valves per cylinder, Bosch common rail direct injection (CRDi), fixed geometry turbocharger (FGT) and intake air swirl control. It is a reduced stroke version of the 1.5L U series with Bore and Stroke at 75 mm × 79 mm (2.95 in × 3.11 in).

It produces 90 PS (66 kW; 89 hp) at 4,000 rpm and 22.4–24.5 kg⋅m (220–240 N⋅m; 162–177 lbf⋅ft) of torque between 1,500 and 2,500 rpm.

Applications

1.5 L (D4FA)

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The 1.5 L (1,493 cc) U diesel engine has four cylinders and is made with a cast iron block, aluminum cylinder head with chain driven DOHC (4 valves per cylinder), Bosch common rail direct injection (CRDi), variable geometry turbocharger (VGT) and intake air swirl control. Bore and stroke are 75 mm × 84.5 mm (2.95 in × 3.33 in). It produces 89 hp (66 kW; 90 PS) and 159 lb⋅ft (216 N⋅m) torque in the Hyundai Getz and 108 hp (81 kW; 109 PS) at 4,000 rpm and 174 lb⋅ft (236 N⋅m) of torque at 2,000 rpm in the Kia Rio and higher spec Hyundai Getz models. Introduced in 2005 this engine replaced the 1.5L 3-cylinder D-engine common rail Diesel sold in the Hyundai Getz and Accent models which was notably less refined.

Applications

1.6 L (D4FB)

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The 1.6 L (1,582 cc) U diesel engine (known as D4FB) from the Žilina Kia factory in Slovakia is a bored-out version of the 1.5 litres (1,493 cc) U series engine, 77.2 mm (3.04 in) versus 75 mm (2.95 in). In 2009, it was refined to the 1.6 U2 version, with a new displacement, developing 126 hp (94 kW; 128 PS) and 195 lb⋅ft (264 N⋅m) of torque.[2]

Engine specification
  • Displacement: 1.6 L (1,582 cc)
  • Bore x Stroke: 77.2 mm × 84.5 mm (3.04 in × 3.33 in)
  • Compression Ratio: 17.3:1
  • Power: 90 PS (66 kW; 89 hp), 115 PS (85 kW; 113 hp) or 128 PS (94 kW; 126 hp)
  • Torque: 24 kg⋅m (235 N⋅m; 174 lbf⋅ft), 26 kg⋅m (255 N⋅m; 188 lbf⋅ft) or 27 kg⋅m (265 N⋅m; 195 lbf⋅ft)
Applications

1.7 L (D4FD)

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The 1.7 litres (1,685 cc) U2 diesel engine (known as D4FD) was introduced at the 2010 Paris Motor Show. This engine features chain driven DOHC with 4 valves per cylinder, common rail direct injection (CRDi), variable geometry turbocharger (VGT).[3]

1.7 CRDI

  • Displacement: 1.7 L (1,685 cc)
  • Bore x Stroke: 77.2 mm × 90 mm (3.04 in × 3.54 in)
  • Compression Ratio: 17.0:1
  • Power: 115 PS (85 kW; 113 hp) or 141 PS (104 kW; 139 hp) @ 4,000 rpm
  • Torque: 26.5 kg⋅m (260 N⋅m; 192 lbf⋅ft) or 34.7 kg⋅m (340 N⋅m; 251 lbf⋅ft) @ 2,000–2,500 rpm[4]
Applications

See also

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References

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  1. ^ "Hyundai Introduces New R-Diesel Engine". Auto Report. 5 November 2008. Archived from the original on 2011-12-20. Retrieved 2012-07-09. The R-Engine brings Hyundai's diesel engine family fully up-to-date as it joins the U-Engine (1.1-liter, 1.4-liter and 1.6-liter), the A-Engine (2.5-liter) and S-Engine (3.0-liter V6).
  2. ^ "Hyundai's New U2 1.6 CRDi Achieves Best-in-Class Performance for Compact Vehicles". 17 September 2008.
  3. ^ "Newsroom | Company - Hyundai Worldwide".
  4. ^ "i40 brochur" (PDF). hyundai.co.nz. Hyundai New Zealand. Retrieved 13 October 2014.[permanent dead link]
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