The V9X is a common rail 65 degree V6 24-valve

DOHC An overhead camshaft (OHC) engine is a piston engine in which the camshaft is located in the cylinder head above the combustion chamber. This contrasts with earlier overhead valve engines (OHV), where the camshaft is located below the combus ...

turbo-diesel The term turbo-diesel, also written as turbodiesel and turbo diesel, refers to any diesel engine equipped with a turbocharger. As with other engine types, turbocharging a diesel engine can significantly increase its efficiency and power output, ...

developed by the Renault-Nissan Alliance, and first installed in the Renault Laguna in 2009. It was subsequently made available for both longitudinal-engine vehicles including Nissan Pathfinder, Nissan Navara, Infiniti FX, Infiniti EX, and Infiniti M and transverse-engine vehicles including Renault Latitude and Laguna

Coupé A coupe or coupé (, ) is a passenger car with a sloping or truncated rear roofline and typically with two doors. The term ''coupé'' was first applied to horse-drawn carriages for two passengers without rear-facing seats. It comes from the Fr ...

. It was the first diesel engine installed in any Infiniti automobiles, seen as a necessity as that brand attempted to enter the European market.

Engine power and combustion

The V9X V6 diesel engine develops and of torque. Peak torque is achieved from as low as 1,750 rpm to 2,500 rpm, with available from 1,500 rpm. Idle speed is 650 rpm. The engine has a single turbocharger located within the vee of the engine, fed from both banks and is equipped with an

intercooler An intercooler is a heat exchanger used to cool a gas after compression. Often found in turbocharged engines, intercoolers are also used in air compressors, air conditioners, refrigeration and gas turbines. Internal combustion engines Mo ...

and Bosch Common rail fuel injection. This system incorporates piezo injectors and operates at . The

combustion chamber A combustion chamber is part of an internal combustion engine in which the air–fuel ratio, fuel/air mix is burned. For steam engines, the term has also been used for an extension of the Firebox (steam engine), firebox which is used to allow a mo ...

design was optimized to improve the balance between emission levels and

fuel efficiency Fuel efficiency (or fuel economy) is a form of thermal efficiency, meaning the ratio of effort to result of a process that converts chemical energy, chemical potential energy contained in a carrier (fuel) into kinetic energy or Mechanical work, w ...

; the compression ratio is 16.0:1.

Emissions and fuel consumption

When fitted to the Infiniti EX30d, the V9X engine emits /km of and returns a combined fuel figure of . When fitted to the Nissan Navara 4x4, it emits /km of and returns a combined fuel figure of . It is fitted to the following vehicles: * 2013–2017 Infiniti QX70D * 2010–2013 Infiniti FX30d * 2010–2013 Infiniti EX30d * 2010–2013 Nissan Pathfinder (R51) * 2010–2015 Nissan Navara (D40) * 2010–2014 Infiniti M30d * 2010–2015 Renault Laguna III * 2010–2015 Renault Latitude

References

{{reflist V9X V9X V6 engines Diesel engines by model

Engine power and combustion

Emissions and fuel consumption

See also

References