Diesel particulate emissions

Journal Article · Sun Jan 01 04:00:00 EST 1989 · Combust. Flame; (United States)

DOI:https://doi.org/10.1016/0010-2180(89)90083-7· OSTI ID:6175414

Williams, P T; Abbass, M K; Andrews, G E; Bartle, K D

The relationship between diesel fuel composition and that of the solvent organic fraction of diesel particulates was investigated for an old DI Petter engine and a modern DI Perkins engine. Polycyclic aromatic compounds (PAC) were identified using high-resolution capillary column chromatography with a parallel triple detector system for polycyclic aromatic hydrocarbons (PAH), nitrogen-containing PAH, and sulphur-containing PAH. Identification of the PAC using retention indexes was confirmed using an ion trap detector, which was also used to quantify the low-concentration (<1 ppm) benzo(a)pyrene. It was conclusively shown for both engines that the bulk of the particulate solvent organic fraction, including the PAH fraction, was unburned fuel. However, there was some evidence that high molecular weight five-ring PAH may have an in-cylinder formation contribution, and it is postulated that this could be due to pyrolysis of lower molecular weight unburned fuel PAH. The contribution of lubricating oil to the particulate PAC is discussed, and evidence is presented that shows the unburned fuel PAC accumulates in the lubricating oil and thus contributes to the particulate PAC via the large lubricating oil component of the particulate PAC.

• Research Organization: Dept. of Fuel and Energy, Univ. of Leeds, Leeds, LS2 9JT (GB); Dept. of Physical Chemistry, Univ. of Leeds, Leeds, LS2 9JT (GB)
• OSTI ID: 6175414
• Journal Information: Combust. Flame; (United States), Journal Name: Combust. Flame; (United States) Vol. 75:1; ISSN CBFMA
• Country of Publication: United States
• Language: English

Related Subjects

090110* -- Hydrocarbon Fuels-- Properties-- (1979-1989)
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800 -- Combustion
Pyrolysis
&amp; High-Temperature Chemistry
500200 -- Environment
Atmospheric-- Chemicals Monitoring &amp; Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AROMATICS
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHROMATOGRAPHY
COMBUSTION KINETICS
DIESEL FUELS
EMISSION
HYDROCARBONS
KINETICS
ORGANIC COMPOUNDS
PARTICLES
PARTICULATES
PETROLEUM PRODUCTS
POLYCYCLIC AROMATIC HYDROCARBONS
REACTION KINETICS
SEPARATION PROCESSES