“The new fuel delivery system, the first of its kind in the world, uses an injector for each port rather than one per cylinder - speeding up fuel vaporization, reducing the amount of unburned fuel and reducing hydrocarbon emissions,” Nissan said in a statement.
Most current gasoline engines use one injector per-cylinder while Nissan’s Dual Injector system uses two injectors per cylinder, which reduces the diameter of the fuel droplets by about 60%.
“We consider it important to further improve the fuel efficiency of gasoline engines as demand for gasoline and other internal-combustion systems continues to increase around the world,” said Shuichi Nishimura, Corporate Vice President, Nissan Powertrain Engineering Division. “By widely applying the Dual Injector system on small-displacement engines, we hope to help reduce CO2 emissions and conserve rare metals.”
Nissan said that it will introduce the new system in production vehicles starting early in fiscal 2010.
Source : [Nissan]