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High Efficiency and Clean Diesel Combustion Using Double Premixed Ignition (First Report)~Development of a New Combustion Concept and Potential of Emission Reduction
Published October 12, 2011 by Society of Automotive Engineers of Japan in Japan
It is very important and urgent subject that internal combustion engines have better combustion potential on clean and high efficiency performance for energy-saving future. We developed a new concept combustion for lower exhaust emission included CO₂, named Diesel Staggered Premixed Ignition with Accelerated Oxidation (D-SPIA), that is based on divided fuel injections before TDC. Although our D-SPIA belongs to a kind of PCCI (Premixed Charge Compression Ignition), it has a distinct feature of double premixed combustion by optimum injection quantities and staggered timing, which can achieve an ideal heat release rate for low pollutant emission and fuel consumption stably.