Quickly add a free MyWikiBiz directory listing!
Nissan VK engine
MyWikiBiz, Author Your Legacy — Friday March 19, 2010
Template:Infobox Automobile engine The VK engine (formerly known as the ZH) is a V8 piston engine from Nissan. It is an aluminum DOHC 4-valve design with variable valve timing. The timing of the intake valves is continuously fine-tuned to ensure air enters the cylinder at exactly the right moment for optimum combustion. It also features a variable intake system and an optional direct injection fuel system.
The VK is based on Nissan's VQ V6 rather than the VH V8 used in previous Q45/Cima models. Changes include titanium valves and aluminium lifters, which being lighter than equivalent steel items allow the engine to respond more quickly and more quietly. The intake manifold directs air through different paths at different engine speeds to boost low-end torque or unleash high-end horsepower. The 4.5 L engine uses a 93 mm (3.7 in) bore and 82.7 mm (Expression error: Unrecognised word "expression" in) stroke and a 90° bank angle.
Contents |
[edit] VK45DE
200px|thumb|VK45DE The 4.5 L (4494 cc) VK45DE was introduced in 2002 and is built in Yokohama, Japan. Bore is 93 mm (3.7 in) and stroke is 82.7 mm (Expression error: Unrecognised word "expression" in). Output is 340 hp (254 kW) at 6400 rpm with 333 ft·lbf (451 Nm) of torque at 4000 rpm. Redline is at 6600 rpm. It has an aluminum engine block and aluminum DOHC cylinder heads. It uses SFI fuel injection, has 4 valves per cylinder with VVT and features forged steel connecting rods, a one-piece cast camshaft, and an unusual nylon intake manifold, variable-flow induction system optimizes airflow for low- and high-speed operation and low-friction molybdenum-coated pistons and microfinished crankshaft.
Motorsport
The VK45DE is used by Nismo for Super GT races with the Nissan GT-R instead of using the GT-R's VR38DETT twin-turbo V6 engine.[1] The VK45DE was previously used in Nissan's 350Z Super GT car, replacing the previous VQ30DETT used in that car in 2007. In race trim, the Super GT VK45DE produces 
and Template:Convert/kgm of torque.[2] The engine idles at around 3500 RPM and is restricted to the above specified power output. Without such restrictions, the engine is reputedly capable of producing nearly .[3] Nismo reasons that by using the engine, they eliminate turbo-lag, save weight and generally prefer the torque curve of the atmospheric V8. The engine and car may be used by Nismo in Lemans racing with, according to Lemans rules, production spec GT-R's with a variant of the VK45.
This engine is used in the following vehicles:
- 2002–2006 Infiniti Q45, 340 hp (250 kW)
- 2003–2008 Infiniti FX45, 315 hp (235 kW) and
- 2003–2004 Infiniti M45, 335 hp (250 kW) and
- 2004–present Nissan Fuga, 333 hp (248 kW) and
- 2007 Super GT Nissan 350Z, 490 hp (370 kW) and Template:Convert/kgm
- 2008 Super GT Nissan GT-R, 490 hp (370 kW) and Template:Convert/kgm
[edit] VK45DD
The VK45DD is the same as the VK45DE but adds an direct injection fuel system. This was Nissans first V8 with direct injection. It produces (officially) 280 PS (276 hp/206 kW) @6000 rpm and @3600 rpm. But it has unofficially over 300 PS (296 hp/221 kW). It has a compression ratio of 11.0.
It was used in the following:
- 2001–present Nissan Cima
[edit] VK50VE
The VK50VE is a 5.0 L V8 engine with 390 hp @6500 rpm and 500 Nm @4400 rpm and redline is at 6800 rpm. Bore x stroke (mm) are 95.5 x 87.7 and compression ratio is 10,9. It has Nissans VVEL technology.
Applications:
- 2009- Infiniti FX
http://nissan.iconicweb.com/assets/specs/2009_FX_Specs_NNA_Final.pdf
[edit] VK56DE
The VK56DE is a 5.6 L (5552 cc) version built in Decherd, TN. Bore is 98 mm (3.9 in) and stroke is 92 mm (3.6 in). Output is 317 hp - 320 hp (227 kW) at 4900 rpm with 375 to 390 ft·lbf (509-522 Nm) of torque at 3600 rpm. It has aluminum-alloy block and heads and low-friction molybdenum-coated pistons. The valvetrain is a dual overhead cam (DOHC). It has 4 valves per cylinder with microfinished camshafts and ductile iron cylinder liners for increased durability.
Applications:
- 2004–present Nissan Armada, 317 hp (236 kW)
- 2004–present Nissan Titan, 317 hp (236 kW)
- 2004–present Infiniti QX56, 320 hp (240 kW)
- 2008–present Nissan Pathfinder, 310 hp (230 kW)
- Note: the Titan numbers are for 87 octane fuel. The 320 hp (240 kW) number for the Infiniti was using premium (91 octane) fuel. Using 91 octane fuel equalized the hp number.
[edit] References
- ^ Autocar article about the Super GT Nissan GT-R.
- ^ NISMO Japan's Super GT GT-R spec sheet in Japanese.
- ^ YouTube video of NISMO engineer interview regarding the Super GT Nissan GT-R.
[edit] See also
Delight at Nissan jobs boost as firm plans to build electric car in Britain (Daily Mirror)
Nissan yesterday saved thousands of jobs by announcing plans to make its new electric car in Britain.
19 March 2010
Nissan to make electric car in the UK (BigPond News)
It has been confirmed that motor giant Nissan is to build its new electric car in Sunderland in the UK.
19 March 2010
Nissan 370Z gets to the heart of the matter: Fun (USA Today)
A casual glance might not say so, but Nissan did a major overhaul on its Z sports car first on the 370Z coupe about a year ago as a 2009 model and lately the convertible version that went on sale last fall as a 2010.
18 March 2010
Nissan Motor To Issue Straight Bonds In Japan - Nikkei (Fox News)
Nissan Motor To Issue Straight Bonds In Japan - Nikkei
18 March 2010
Nissan 370Z gets to the heart of the matter: Fun (USA Today)
Nissan did a major overhaul on its Z sports car, first on the 370Z coupe about a year ago and now the convertible version.
18 March 2010
Nissan to make Leaf electric cars in Britain (AFP via Yahoo! News)
Nissan Motor on Thursday said it would start building its zero-emission Leaf electric car at a plant in Britain from 2013, saving more than 2,000 jobs in one of England's most deprived regions.
18 March 2010
