HC and CO emissions of premixed low-temperature combustion fueled by blends of diesel and gasoline

Experimental study on diesel conventional and low temperature combustion by fueling four isomers of butanol

“…Therefore, the extremely high CO emission could be the principal reason for low thermal efficiency in Fig. 6 [24,63]. Overall, regulated gas emissions are not significantly affected by the addition of butanol isomers and to improve combustion efficiency in high EGR dilution conditions remains a key issue for LTC fueled with different blends of butanol isomers and diesel.…”

“…Butts et al [23] found that increasing cetane number could reduce CO and UHC, improve fuel consumption and reduce combustion noise due to more favorable combustion phasing in LTC mode. Han et al [24] found that the changes of fuel composition such as using the blend of gasoline and diesel could impact the ignition delay and global equivalence ratio and resulted in different HC and CO emissions. Further, by using the blend of gasoline and diesel fuel, soot and NO x emissions were simultaneously decreased without significantly reducing local combustion temperatures which is essentially necessary in conventional LTC strategies [25].…”

Experimental study on the two stage injection of diesel and gasoline blends on a common rail injection system

“…The well-maintained combustion temperature could avoid the combustion deterioration as in the conventional LTC mode. Some researchers considered using blends of diesel and gasoline instead of diesel in advanced compression ignition (CI) engine combustion modes, and remarkable advantages in emissions control and fuel efficiency improvements were observed due to the extended ignition delay and improved in-cylinder fuel/air distribution [5][6][7][8][9][10]. Meanwhile, compared to gasoline LTC, using blends of diesel and gasoline does not cause combustion instability problems at low load and low speed conditions, as reported by Weall and Collings [11,12].…”

Performance and Emissions Characteristics of Diesel-Ignited Gasoline Dual Fuel Combustion in a Single-Cylinder Research Engine

“…Some researchers have considered dual fuel combustion strat egies [21], where gasoline-air mixtures are ignited using diesel pilots, and direct injection of gasoline-diesel blended fuels [22][23][24]. Of particular relevance to the present study is the gasoline-diesel dual fuel combustion process (also termed reactiv ity controlled compression ignition, or RCCI), where premixed gasoline-air mixtures are ignited using appropriately timed diesel pilot sprays [21,[25][26][27].…”