2017 Nissan Pathfinder's 3.5-liter V6 engine with Direct Injection Gasoline™ (DIG) system
The 2017 Nissan Pathfinder engine’s new Direct Injection Gasoline™ (DIG) system, which is also utilized on the all-new flagship Nissan Armada full-size SUV, provides better wide-open throttle performance and improved fuel economy and emissions performance (versus a non-direct-injection system). The system injects fuel directly into the combustion chamber rather than into the intake port. The designated shape of the piston head controls the injected fuel flow to the spark plug. This introduces concentrated fuel around the spark plug, reducing the time needed to burn the fuel. This also helps eliminate residual fuel buildup, resulting in cleaner exhaust.