2016 INFINITI Q50
3.0L V6 TURBO ENGINE
For your ADRENALINE-FUELED EXCITEMENT, we present the VR30DDTT: An all-new engine from the exclusive VR-series engine family. This new compact, lightweight 3.0-LITER V6 TWIN-TURBO engine is the most advanced V6 engine that Infiniti has ever offered, striking an ideal balance between drivability, efficiency, and performance.
TWO VERSIONS OF THIS ENGINE WILL BE MADE AVAILABLE IN THE 2016 Q50:
- Q50 3.0t Standard Output (L/O) 300 horsepower (224kW) at 6,400 rpm and 295 lb-ft (400 N·m) torque at 1,600-5,200 rpm.
- Q50 Red Sport 400 High Output (H/O) 400 horsepower (298kW) at 6,400 rpm and 350 lb-ft (475 Nm) maximum torque at 1,600-5,200 rpm
ON A HIGH-LEVEL VIEW, BOTH VERSIONS OF THIS NEW ENGINE HAVE MANY SIMILARITIES:
- 2,997 cc displacement with 60° V6 configuration.
- Bottom end geometry is not over or under square, but is truly square: 86.0 x 86.0 mm. Ideal configuration and balance for free-revving performance to produce high horsepower and torque.
- 10.3:1 compression ratio; standard compression pressure is 145.0 – 181.25 psi at 250 rpm.
- DOHC 4-valves per cylinder.
ELECTRIC CONTROLLED VTC INTAKE VALVE TIMING (IVT)
Intake cam timing is controlled by the new, very-high-speed-response, electric motor system.
- Electric controlled VTC (INTAKE VALVE TIMING (IVT) has been adopted for both intake camshafts.
- Exhaust cam timing is hydraulically controlled.
DIRECT INJECTION GASOLINE (DIG) FUEL INJECTION SYSTEM
The DIG adopts a high-fuel pressure pump, sub-tube and fuel pressure sensor. The high-fuel pressure pump is a single cylinder type that is driven by a Bank 2 exhaust cam and pump lifter to produce high fuel pressure under 3 stages.
The exhaust manifold is basically cast into the head, such that the turbocharger is bolted directly to the engine head.
TWO TURBOCHARGERS
Two turbochargers, one per bank; each with a high-speed electronically-driven wastegate.
CHARGED AIR COOLING (CAC)
- Two Charged Air Cooling (CAC) liquid-to-air intercoolers mounted on top of the intake manifold inlet.
- Completely separate coolant circuit for the CAC intercoolers, independent from the engine coolant circuit.
Note:
Periodic replacement of CAC coolant
(Genuine Nissan Long Life Antifreeze/
Coolant - blue) is not needed.
LUBRICATION SYSTEM
Either liquid-to-oil or air-to-oil coolers for engine lubrication, thermostatically controlled to maintain optimum temperatures.
MULTI-WAY CONTROL VALVE
Engine coolant flow is controlled by a Multi-way Control Valve. This is a motordriven valve that integrates the thermostat and a water control valve. It can control the flow of coolant to the radiator, heater and oil cooler (as applicable).
ENGINE-DRIVEN VACUUM PUMP
Due to highly variable intake manifold pressures of this turbocharged engine, an engine-driven vacuum pump is used to supply a consistent vacuum source for the power brake booster.
- Engine management software and hardware of higher complexity.
- Turbine revolution sensors on each turbocharger (in diagram above). Signals from these sensors allow the ECM’s sophisticated software to achieve very high precision control of the wastegates.
400HP ENGINE SYSTEM
- More precise control of the wastages allows spool speeds up to 200,000 rpm in steady conditions and 240,000 rpm at transient conditions. This, of course, means more engine output power, approximately 30% more.
- High precision turbo boost control is also assisted by an additional CAC coolant medium boost pump (in diagram below).
- A CAC pressure sensor and temperature sensor supply the ECM with air density and temperature information. This allows the ECM to provide maximum boost.
