Honda HR-414E/HR-417E/HR-420E engine

The Honda HR-414E, HR-417E and Honda HR-420E are a series of prototype, four-stroke 2.0-litre single-turbocharged inline-4 racing engines, developed and produced by Honda for the Super GT series and Super Formula under the Nippon Race Engine framework. The HR-420E engine is fully custom-built.[1][2]

Honda HR-414E/HR-417E/HR-420E
Overview
ManufacturerHonda
Production2014-present
Layout
ConfigurationInline-4
Displacement2.0 L (122 cu in)
Cylinder bore86–90 mm (3.39–3.54 in)
Piston strokeFree but typically approximately between 86–90 mm (3.39–3.54 in)
Cylinder block materialDie cast steel or aluminium alloy. Machining process from a solid is not permitted
Cylinder head materialDie cast steel or aluminium alloy
ValvetrainDOHC 16-valve (four-valves per cylinder)
Compression ratio15:1
Combustion
TurbochargerSingle-turbocharged by Garrett Advancing Motion with 3.5 bar (51 psi) of turbo boost pressure
Fuel systemBosch HDEV6 350 bar (5,076 psi) central high-pressure gasoline direct fuel injection. One direct injector per cylinder fed by an engine-driven high-pressure fuel pump
ManagementBosch Motronic MS 7.4
Fuel typeVarious (102 RON unleaded racing gasoline)
Oil systemDry sump
Cooling systemSingle mechanical water pump feeding a single-sided cooling system
Output
Power output550 PS (542 hp; 405 kW)
Torque output> 490 N⋅m (360 lbf⋅ft)
Dimensions
Length600 mm (23.62 in)
Width697 mm (27.44 in)
Height693 mm (27.28 in)
Dry weight187 lb (85 kg) including turbocharger

Versions

  • HR-414E (2014–2016)
  • HR-417E (2017–present)
  • HR-420E (2020–present)

Applications

See also

  • Toyota RI engine, similar engine also developed under the Nippon Race Engine framework
  • Nissan NR engine, similar engine also developed under the Nippon Race Engine framework

References

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