Time-resolved particle emission and size distribution characteristics during dynamic engine operation conditions with ethanol-blended fuels

The effect of ethanol-blended gasoline fuels on the characteristics of time-resolved particle concentration and size distribution was investigated in a gasoline engine and in a flexible fuel vehicle. Particle concentration levels from the vehicle running on ethanol-blended gasoline were compared to those of diesel vehicles with and without diesel particulate filter (DPF). In the engine test, particle size distribution and number concentration using E0 and E10 fuels were analyzed with a differential mobility spectrometer (DMS500) at dynamic engine operation conditions. In the vehicle emission test, time-resolved particle concentrations with ethanol blending contents (E0, E10, and E85) during a new European driving cycle (NEDC) were analyzed with a golden particle measurement system (GPMS) as recommended by the particle measurement programme (PMP). As the excess air ratio is shifted to lean conditions and as the spark and intake valve opening timing are retarded, particle number levels were reduced with both E0 and E10. The particle concentration from ethanol-blended gasoline was slightly decreased regardless of engine operating conditions. From the driving test results, the total particle concentration from the spark ignition and the diesel vehicle with a DPF was decreased by two orders of magnitude compared to a non-DPF diesel vehicle. As the oxygenated component is increased, particle emissions decreased. The total particle concentration for E85 was reduced by 37% compared to E0.

[1]  Jiming Hao,et al.  A study on emission characteristics of an EFI engine with ethanol blended gasoline fuels , 2003 .

[2]  G. B. Parvate-Patil,et al.  An Assessment of Intake and Exhaust Philosophies for Variable Valve Timing , 2003 .

[3]  Zoran Ristovski,et al.  PARTICLE EMISSIONS FROM COMPRESSED NATURAL GAS ENGINES , 2000 .

[4]  Fuquan Zhao.  Technologies for Near-Zero-Emission Gasoline-Powered Vehicles , 2006 .

[5]  Simone Hochgreb,et al.  MECHANISMS OF PARTICULATE MATTER FORMATION IN SPARK-IGNITION ENGINES. 1: EFFECT OF ENGINE OPERATING CONDITIONS , 1999 .

[6]  Minho Lee,et al.  Inter-laboratory correlation exercise on a light-duty diesel passenger vehicle to verify nano-particle emission characteristics by Korea particle measurement program , 2009 .

[7]  D. Kayes,et al.  Investigation of the Dilution Process for Measurement of Particulate Matter from Spark-Ignition Engines , 1998 .

[8]  Y. I. Jeong,et al.  Experimental investigation and comparison of nanoparticle emission characteristics in light-duty vehicles for two different fuels , 2008 .

[9]  H. L. Walmsley,et al.  Particulate and Hydrocarbon Emissions from a Spray Guided Direct Injection Spark Ignition Engine with Oxygenate Fuel Blends , 2007 .

[10]  Leonidas Ntziachristos,et al.  Sampling Conditions for the Measurement of Nucleation Mode Particles in the Exhaust of a Diesel Vehicle , 2004 .

[11]  Jon Andersson,et al.  Particle Measurement Programme (PMP):Particle Size and Number Emissions Before, During and After Regeneration Events of a Euro 4 DPF Equipped Light-Duty Diesel Vehicle. , 2007 .

[12]  Timothy T. Maxwell,et al.  Alternative Fuels: Emissions, Economics, and Performance , 1994 .

[13]  D. Kittelson.  Engines and nanoparticles: a review , 1998 .

[14]  Simone Hochgreb,et al.  Mechanisms of Particulate Matter Formation in Spark-Ignition Engines. 3. Model of PM Formation , 1999 .

[15]  Richard L. Bechtold,et al.  Alternative Fuels: Transportation Fuels for Today and Tomorrow , 2002 .

[16]  Giechaskiel Barouch,et al.  Particle Measurement Programme (PMP) Light-duty Inter-laboratory Correlation Exercise (ILCE_LD) Final Report , 2007 .