Nissan injects new life into petrol engines

Nissan is claiming a world first technology breakthrough that it says will significantly reduce fuel consumption in small-capacity petrol engines. The new Dual Injection System uses a fuel injector for each port in the cylinder, instead of the current single injector per cylinder supplying two intake ports.

According to Nissan, the new system reduces the amount of unburnt fuel and hydrocarbon emissions. The system works in conjunction with continuous valve timing control to improve fuel consumption by four per cent.

The Japanese company says the system is superior to direct injection on small capacity engines because it requires a less complex design. As a result, the company claims that it reduces build costs by 60 per cent.

"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," says 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."

Roll-out of the new technology will begin with the 2010 models using small capacity engines.

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