Nissan has revolutionized the gasoline enginesAugust 28, 2016
Japanese automaker Nissan Motor has created a new type of gasoline engine, which is able to make some modern diesel counterparts irrelevant. It is based on the electro-mechanical technology of variable compression ratio, which ensures optimum compression of the fuel for its ignition sweep. As a result of the new engine is working efficiently throughout the rev range and loads, demonstrating the performance of gasoline engines with turbocharged performance with the power and efficiency of modern diesel and hybrid counterparts.
Some details were announced at the briefing held in the technical and Nissan Design Center in Atsugi. “We believe that one of our new engines is the best gasoline engines, which over time can replace advanced modern diesel units” – expressed confidence Kinichi Tanuma, senior engineer of Nissan, head of product development of high-end brand Infiniti.
The company also notes that in the last 20 years who have not only worked on alternating compression and other technologies that can significantly improve the efficiency of the gasoline engine, but Nissan was able to achieve such a good result. “Improving fuel efficiency in internal combustion engines is critical for automakers. Since not all customers accept electric vehicles. But there are more serious problems such as increased complexity and cost, and the probable increase in vibration, “- said James Chao, director of the Asia-Pacific region.
The compression ratio determines how much compressed air-fuel mixture in the cylinders before its ignition and energy production. Usually, the engineers had to select the optimal compression ratio to achieve the desired performance and power efficiency. For Nissan VC-T engine this index varies between 8:1 and 14:1. For comparison, the mass market automobiles are set to the compression ratio of 8: 1 to 10:1, and more wasteful sports and racing cars are different ratio of 12:1 or higher.
It is expected that a decision on the basis of Variable Compression-Turbo technology (VC-T) will be presented at the Paris Motor Show next month and already in 2017 integrated into the Infiniti car. Over time, the engines of this class will be used in Nissan vehicles and possibly for partnership alliance with Renault. Regarding to the effectiveness the company reported that 2-liter 4-cylinder engine VC-T turbo-charged 27% more economical than the 3.5-liter V6 engine, which it replaces, with comparable power and torque. In addition, this engine will be less modern diesel variants with a turbocharger. It also corresponds to the accepted standards for nitrogen oxides and other emissions. Kinichi Tanuma explained that all of these indicators can be further improved with the use of gasoline-electric hybrid systems.