The Use of CETANERTM for the Reduction of Particulate Matter Emissions in a Turbocharged Direct Injection Medium-Duty Diesel Engine

摘要

In this experimental study, the effects of the addition of CETANERTM to aCalifornia diesel fuel at various blend levels (5% to 40% by mass) were evaluated using aCummins ISB 5.9 Liter, 24-valve turbocharged direct injection diesel engine.CETANERTM, a product developed by Air Products and Chemicals, Inc., can bemanufactured from coal-derived syngas through a two-stage process: (i) Liquid PhaseDiMethyl Ether synthesis (LPDMETM); and (ii) chemistry to form long chain linear ethersfrom DiMethyl Ether (DME). When compared to other oxygenated componentscurrently being researched, CETANERTM has several key advantages: (i) it is derivedfrom a non-petroleum feedstock; (ii) it has a cetane number greater than 100; and (iii) itwill have a cost comparable to diesel fuel. Particulate matter emissions and exhaust gascomposition (CO, NOx and total hydrocarbons), were determined at eight steady-stateengine operating conditions according to the AVL 8-Mode test protocol. In addition,calorific value of the various blends was also determined. Engine test results indicatethat CETANERTM is effective in reducing particulate matter emissions at all blend levelstested, without any modifications to engine operating parameters, although above 15%CETANERTM addition the engine is unable to reach peak power output.