Ricardo papers on ultra-fuel efficient gasoline engine research receive FISITA awards 3 December 2012
Cross-sectional view of SGDI cylinder head showing the layout of the combustion system. King et al. Click to enlarge.
| Papers on the Ricardo turbocharged spray-guided gasoline direct injection (T-SGDI) combustion system and on its HyBoost research (earlier post) took awards for most “outstanding paper” at the recent FISITA 2012 World Automotive Congress in Beijing in the “future internal combustion engines” and “future powertrain” categories. T-SGDI. Ricardo, in collaboration with the engines business of Malaysian technology and energy company PETRONAS Research Sdn Bhd., have undertaken a four-year collaborative research program to develop the next generation of spark-ignited Spray Guided Direct Injection (SGDI) gasoline engine combustion system with robustness to blended fuels such as ethanol or methanol. In the FISITA paper, Jason King from Ricardo mainly covered the development and benefits of stratified operation at part load with both naturally aspirated and boosted engine operation. The initial part of the T-SGDI program enabled the successful development of a next-generation stratified charge combustion system based on spray-guided fuel injection with up to five injections per cycle. The injection sequence and injection duration was varied from a minimum of 0.1ms per injection upwards. Subsequent research work on the multi-cylinder T-SGDI research engine has demonstrated that fuel consumption benefits were significantly enhanced through boosting, with a best BSFC of 203 g/kWh being achieved at 2250 rev/min and 13 bar BMEP. Work reported in the paper used a spray-guided direct injection combustion system jointly developed with PETRONAS. The cylinder heads featured a transverse orientation spark plug and injector layout—i.e. the axis of the spark plug and injector was perpendicular to the crankshaft axis. The piezoelectric outwardly opening injector...
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