Nissan VR engine

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Nissan VR engine
Nissan VR38DETT Engine.JPG
Overview
Manufacturer Nissan
Production 2007–present
Combustion chamber
Configuration DOHC 60° V6
Chronology
Predecessor

Nissan VQ engine

RB26DETT

The VR is a twin-turbo DOHC V6 automobile engine from Nissan with displacements varying from 3.0 L to 3.8 L. An evolution of the widely successful VQ series, it draws on developments from the VRH JGTC and Nissan R390 GT1 Le Mans racing engines.

VR30DDTT[edit]

Announced by Infiniti on December 15, 2015 the VR30DDTT[1] will be first available in the Infiniti Q50 sedan and will come in a 300 hp and 400 hp version.[2]

Features:[3]

  • Aluminium block with arc sprayed mirror coating to cylinder bores
  • Aluminium cylinder head with integrated exhaust manifold
  • Lightweight resin intake and lower oil pan
  • Compact twin direct-mount turbos with electronic wastegate actuator
  • Twin water-to-air charge coolers with one (300hp)/two (400hp) water pumps
  • Electronically controlled variable displacement oil pump
  • Intake: electronic variable Valve Timing Control (VTC)
  • Exhaust: hydraulic continuously variable VTC

Applications:

VR38DETT[edit]

Designated the VR38DETT by Nissan, the engine is currently used in the 2007–present Nissan GT-R[4] and the limited production Nissan Juke-R.

The VR38DETT sports 24 valves controlled by dual overhead camshafts (a total of 4 cams for both overheads) with variable valve timing (intake only). The block is cast aluminum with 0.15 mm (0.006 in) plasma-sprayed cylinder liner bores. This coating provides a hard protective layer for the piston rings to slide on as the piston moves up and down during their cycles. The turbine housings for the two IHI turbochargers are integrated into the exhaust manifolds to decrease weight and bolster vehicle balance. The engine also sports a pressurized lubrication system controlled thermostatically. The VR38DETT is equipped with a feedback control system that changes air fuel ratio depending on the engine load which has a significant effect on reducing the fuel consumption.[5]

The VR38DETT is hand assembled in a special clean-room environment at Nissan's Tochigi facility by specially trained technicians.[6]

Since 2011 all VR38DETTs produced have come with a red top engine cover.

Fully equipped with the first set of catalytic converters, turbos, all of the engine driven accessories, front differential assembly, and turbo outlet pipes, the engine weighs 608 lb (276 kg).[7]

Other pertinent features of the VR38DETT include:

  • Continuously variable valve timing control system (CVTCS) on intake valves
  • Aluminum cylinder block with high-endurance/low-friction plasma-sprayed bores
  • Iridium-tipped spark plugs
  • Electronic drive-by-wire throttle
  • Pressurized lubrication system with thermostatically controlled cooling and magnesium oil sump
  • Fully symmetrical dual intake and low back-pressure exhaust system
  • Secondary air intake system to rapidly heat catalysts to peak cleaning efficiency
  • 50 State LEV2/ULEV

Applications:

Racing:

Engine reference[edit]

Engine code Vehicle Year Displacement Weight Bore Stroke C.R. Max. power Max. torque Features
VR38DETT Nissan GT-R 2007–current 3,799 cc (3.8 L; 231.8 cu in) approx.600 lb (272.16 kg) 95.5 mm (3.76 in) 88.4 mm (3.48 in) 9.0:1 approx. 480 PS (353 kW) - 550 PS (405 kW) at 6,400 rpm
600 PS (441 kW) at 6,800 rpm (NISMO)
588 N·m (434 lbf·ft) - 652 N·m (481 lbf·ft) from 3,200–6,000 rpm DOHC per bank
Variable inlet cam phasing
Twin Turbo
VR30DDTT Infiniti Q50 2016–current 2,997 cc (3.0 L; 182.9 cu in) approx.429.5 lb (194.82 kg) 86.0 mm (3.39 in) 86.0 mm (3.39 in) 10.3:1 approx. 405 PS (298 kW) at 6,400 rpm (High Output)
304 PS (224 kW) at 6,400 rpm (Standard Output)
475 N·m (350 lbf·ft) from 1,600–5,200 rpm (High output)
400 N·m (295 lbf·ft) from 1,600–5,200 rpm (standard output)
High pressure multi-split direct injection
DOHC per bank
Variable inlet and outlet cam phasing
Twin Turbo
Nissan VR38DETT Engine at Nissan Engine Museum in Yokohama, Japan
Nissan VR38DETT Engine at Nissan Engine Museum in Yokohama, Japan
Nissan VR38DETT Engine at Nissan Engine Museum in Yokohama, Japan
Nissan VR38DETT Engine at Nissan Engine Museum in Yokohama, Japan

See also[edit]

References[edit]