V9X Engine
Encyclopedia
The V9X is a common rail V6 turbodiesel developed by the Renault-Nissan Alliance
, and first installed in the Renault Laguna
in 2009. It was subsequently made available for all longitudinal-engined vehicles, including Infiniti
, Nissan Pathfinder
, Nissan Navara, Infiniti FX
, Infiniti EX
, Infiniti M
and Renault Laguna
.
The combustion chamber design was optimized to improve the balance between emission levels and fuel efficiency; the compression ratio was lowered to 16:1 to benefit not just economy and emissions but also noise, vibration and harshness (NVH).
Class-leading levels of torque and highly competitive specific power outputs are delivered thanks to the adoption of a comparatively large single turbocharger, which is mounted within the vee of the engine, an intercooler
and the use of the latest generation of Bosch Common rail
fuel injection. This system incorporates piezo injectors and operates at 1,800 bar.
Power output is on target at 240 hp while the class-leading torque output of 550 newton metre(for rear and four-wheel drive applications) is better than the target. Peak torque is achieved from as low as 1,750 rpm and is available all the way to 2,500 rpm, while as much as 500 N·m is available from 1,500 rpm. Idle speed is an exceptionally low 650 rpm with none of the NVH usually associated with a diesel. The result is strong low-end performance with comfortably refined delivery. Special tuning of the exhaust note provides a pleasantly sporting note at about 2,500 rpm under hard acceleration.
It is fitted to the following vehicles:
Renault-Nissan Alliance
Renault-Nissan Alliance is a strategic partnership between Paris-based Renault and Yokohama, Japan-based Nissan, which together sell one in 10 cars worldwide. The companies, which have been strategic partners since 1999, have 350,000 employees and five major brands: Renault, Nissan, Renault...
, and first installed in the Renault Laguna
Renault Laguna
The Renault Laguna is a large family car produced by the French manufacturer Renault. The first Laguna was launched in 1993, the second generation was launched in 2000, and the third generation was made available for sale in October 2007....
in 2009. It was subsequently made available for all longitudinal-engined vehicles, including Infiniti
Infiniti
is the luxury division of automaker Nissan. Infiniti officially started selling vehicles on November 8, 1989 in North America. Marketing operations have since grown to include the Middle East, South Korea, Russia, Taiwan, China, Ukraine and the United Kingdom. Infiniti began sales in additional...
, Nissan Pathfinder
Nissan Pathfinder
The Nissan Pathfinder is a SUV manufactured by Nissan Motors since 1986, derived from Nissan's compact pickup truck platform. The Pathfinder is slotted in size between the Murano and Armada or Patrol, but in price between the Xterra and Murano...
, Nissan Navara, Infiniti FX
Infiniti FX
The Infiniti FX is a mid-size luxury crossover SUV produced by the Nissan-owned Infiniti luxury vehicle brand since the 2003 model year. The FX replaced the QX4 as Infiniti's mid-size luxury-type SUV, although the QX4 was smaller than the FX. It was released at the same time as its competitors,...
, Infiniti EX
Infiniti EX
The Infiniti EX is a premium-type compact crossover SUV priced below the Infiniti FX. It is based on the same FM platform as the Infiniti G, M, and FX models.- Infiniti EX Concept :...
, Infiniti M
Infiniti M
The "M" nameplate has been used on various mid-luxury cars from the Infiniti luxury division of Nissan.The first iteration was the M30 Coupe/Convertible, which were rebadged JDM Nissan Leopard....
and Renault Laguna
Renault Laguna
The Renault Laguna is a large family car produced by the French manufacturer Renault. The first Laguna was launched in 1993, the second generation was launched in 2000, and the third generation was made available for sale in October 2007....
.
Engine power and combustion
The V9X V6 diesel engine develops 240 hp and 550 newton metre of torque.The combustion chamber design was optimized to improve the balance between emission levels and fuel efficiency; the compression ratio was lowered to 16:1 to benefit not just economy and emissions but also noise, vibration and harshness (NVH).
Class-leading levels of torque and highly competitive specific power outputs are delivered thanks to the adoption of a comparatively large single turbocharger, which is mounted within the vee of the engine, an intercooler
Intercooler
An intercooler , or charge air cooler, is an air-to-air or air-to-liquid heat exchange device used on turbocharged and supercharged internal combustion engines to improve their volumetric efficiency by increasing intake air charge density through nearly isobaric cooling, which removes...
and the use of the latest generation of Bosch Common rail
Common rail
Common rail direct fuel injection is a modern variant of direct fuel injection system for petrol and diesel engines.On diesel engines, it features a high-pressure fuel rail feeding individual solenoid valves, as opposed to low-pressure fuel pump feeding unit injectors...
fuel injection. This system incorporates piezo injectors and operates at 1,800 bar.
Power output is on target at 240 hp while the class-leading torque output of 550 newton metre(for rear and four-wheel drive applications) is better than the target. Peak torque is achieved from as low as 1,750 rpm and is available all the way to 2,500 rpm, while as much as 500 N·m is available from 1,500 rpm. Idle speed is an exceptionally low 650 rpm with none of the NVH usually associated with a diesel. The result is strong low-end performance with comfortably refined delivery. Special tuning of the exhaust note provides a pleasantly sporting note at about 2,500 rpm under hard acceleration.
Emissions
In addition to the advances made by the changes to the combustion chamber, the V9X engine also incorporates a number of innovative features designed both to enhance emissions performance and improve reliability. The V9X engine cuts CO2 emissions in the EX to 224 g/km and helps the model return a combined fuel figure of 8.4 L/100 km (28 mpg US). The equivalent figures for all models are 240 g/km and 9.0 L/100 km (26 mpg US).It is fitted to the following vehicles:
- 2010–present Infiniti FXInfiniti FXThe Infiniti FX is a mid-size luxury crossover SUV produced by the Nissan-owned Infiniti luxury vehicle brand since the 2003 model year. The FX replaced the QX4 as Infiniti's mid-size luxury-type SUV, although the QX4 was smaller than the FX. It was released at the same time as its competitors,...
30d - 2010–present Infiniti EXInfiniti EXThe Infiniti EX is a premium-type compact crossover SUV priced below the Infiniti FX. It is based on the same FM platform as the Infiniti G, M, and FX models.- Infiniti EX Concept :...
30d - 2010–present Nissan PathfinderNissan PathfinderThe Nissan Pathfinder is a SUV manufactured by Nissan Motors since 1986, derived from Nissan's compact pickup truck platform. The Pathfinder is slotted in size between the Murano and Armada or Patrol, but in price between the Xterra and Murano...
- 2010–present Nissan Navara
- 2010–present Infiniti MInfiniti MThe "M" nameplate has been used on various mid-luxury cars from the Infiniti luxury division of Nissan.The first iteration was the M30 Coupe/Convertible, which were rebadged JDM Nissan Leopard....
30d - 2010–present Renault LagunaRenault LagunaThe Renault Laguna is a large family car produced by the French manufacturer Renault. The first Laguna was launched in 1993, the second generation was launched in 2000, and the third generation was made available for sale in October 2007....
III - 2010–present Renault LatitudeRenault LatitudeThe Renault Latitude is a large family car produced by the French automaker Renault, and announced in June 2010. It debuted at the Moscow International Motor Show, at the end of August 2010.- Design :...