Combustion Characteristics and Particulate Matter Number Size Study of Ethanol and Diesel Reactivity Controlled Compression Ignition Engine

2017-24-0143

09/04/2017

Features
Event
13th International Conference on Engines & Vehicles
Authors Abstract
Content
The main aim of this work is to characterize the combustion phenomena and particulate matter in nano-size from the reactivity controlled compression ignition (RCCI) engine using neat hydrous ethanol as a low reactivity fuel. A four-cylinder diesel engine fueled with diesel (the volumetric blend of 95% petroleum diesel and 5% palm-based biodiesel) was operated on low and medium loads at 2,500 rpm without main diesel fuel injection modification and exhaust gas recirculation. Ethanol was injected at 1 bar pressure into the intake manifold while the w/w ratios of ethanol:diesel were varied between 0 and 0.77. An engine indicating system composed of an in-cylinder pressure transducer and a shaft encoder was used to investigate combustion characteristics using the first law of thermodynamics. A Scanning Mobility Particle Sizer and an Optical Particle Sizer were used to determine the particle number concentration and distribution over nano-size range. The increased portion of ethanol pre-mixture results in longer ignition delay corresponding to the reduction in main diesel fuel consumption. Compared with diesel fuel combustion, the higher ethanol pre-mixture leads to a smaller average size of the particles but gives rise to a higher number concentration.
Meta TagsDetails
DOI
https://doi.org/10.4271/2017-24-0143
Pages
11
Citation
Chuepeng, S., Theinnoi, K., and Tongroon, M., "Combustion Characteristics and Particulate Matter Number Size Study of Ethanol and Diesel Reactivity Controlled Compression Ignition Engine," SAE Technical Paper 2017-24-0143, 2017, https://doi.org/10.4271/2017-24-0143.
Additional Details
Publisher
Published
Sep 4, 2017
Product Code
2017-24-0143
Content Type
Technical Paper
Language
English