Nissan presents new-generation VQ 2.5 & 3.5 litre V6 Engines

 

 

 

 

 

 

 

 

Twelve years and 5.5 million units after its introduction in 1994, Nissan announced that its award winning VQ engine is heading for retirement. But don't you Nissan fans get all worried as the Renault's brother-in-arms simultaneously presented it's VQ successor that will be available in 2.5 & 3.5 litre forms.

Although Nissan doesn't give us any information on the engines output, it is expected that the VQ35 will produce over 300 Hp. The 3.5L VQ35HR and 2.5L VQ25HR engines will be built at Nissan's Iwaki Plant in Fukushima Prefecture and will equipped the all-new Skyline to be released this autumn in Japan, as well as the US where the model is sold as the Infiniti G35. Later the engines will find their place in other Infiniti and Nissan models such as the 350Z, the Murano, the FX etc.

Featuring newly designed engine blocks and other key components, the engines promise to offer smooth transition to top-in-class level engine speed of 7.500 rpm. According to Nissan, the new VQ engines achieve a 10% improvement in fuel efficiency compared to vehicles equipped with the existing VQ engine and top-in-class Super Ultra-Low Emission Vehicle level emissions. SU-LEVs have 75% or less nitrogen oxide (NOx) and hydrocarbon (HC) emissions than those stipulated by Japan's 2005 exhaust emission standards.

 

Smooth transition to top-in-class level engine speed of 7.500 rpm

• Reduction of weight and friction through adoption of asymetrical piston skirt configuration
• Reduction of piston-side force through lengthening of con rod
• Addition of rudder frame, newly-designed cylinder block with significantly improved rigidity

Thrilling revving sound and top-in-class output

• Adoption of perfectly symmetrical intake system
• Adoption of continuously variable valve timing control (CVTC) for intake side and electromagnetic valve timing control (e-VTC) for exhaust side
• Reduction of intake resistance through adoption of symmetrical twin intake system and straight intake port
• Adoption of isometric exhaust manifold and perfectly symmetrical exhaust system

Improvement of fuel-efficiency and emission cleanliness

• Reduction of friction through adoption of world's first hydrogen-free, diamond-like carbon (DLC) coating
• Adoption of catalyst substrate with ultra-low heat mass, super-ignition iridium spark plug and fast light-off