Authors
C. Scott Sluder,
Robert M. Wagner,
S.A. Lewis, Sr., and
J.M. Storey
Publication
SAE Paper 2004-01-0114, 2004 SAE International Congress & Exposition
Abstract
The exhaust
chemistry of combustion regimes characterized by simultaneous
low-NOx and low-PM emissions were investigated on a Mercedes
1.7-L diesel engine. Two approaches for entering low-NOx
low-PM regimes were explored using a California specification low
aromatic certification diesel fuel. Detailed characterizations of
gas-phase hydrocarbons, particulate soluble organics, and aldehydes are
presented for both approaches. Results indicate significant formation of
partially oxygenated hydrocarbons and fuel reformation products during
periods of low-NOx low-PM combustion regimes, a thorough
characterization of the exhaust chemistry for these types of regimes is
missing from the literature. A previously published report describes the
origins of this study and emphasizes the need for focusing on the
exhaust chemistry as a pathway to further understanding processes
leading to low-NOx low-PM combustion (8). The objective of
this investigation is to improve the understanding of exhaust chemistry
and consequently the combustion processes associated with operating in
low-NOx low-PM combustion regimes.
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