An ultralow emission combustor concept based on “flameless oxidation” is demonstrated in this paper for aviation kerosene. Measurements of gas emissions, as well the size and number nanoparticles via scanning mobility particle sizing, are carried out at outlet, revealing simultaneously soot-free single-digit NOx levels operation atmospheric conditions. Such performance, achieved with direct spr...

Soot sensors are required for on-board diagnostics (OBD) of automotive diesel particulate filters (DPF) to detect filter failures. Widely used for this purpose are conductometric sensors, measuring an electrical current or resistance between two electrodes. Soot particles deposit on the electrodes, which leads to an increase in current or decrease in resistance. If installed upstream of a DPF, ...

Soot particles produced by incomplete combustion processes are one of the major components of urban air pollution. Chemistry at their surfaces lead to the heterogeneous conversion of several key trace gases; for example NO(2) interacts with soot and is converted into HONO, which rapidly photodissociates to form OH in the troposphere. In the dark, soot surfaces are rapidly deactivated under atmo...

This paper focuses on the correlation between oxidative reactivity and electrical properties of soot particles. Soot particles were produced from an n-heptane inverse diffusion flame sampled at different heights above burner (HAB) using a thermophoretic probe sampling techniques. The characterized by conductivity work function, which evaluated atomic force microscopy. was assessed in terms acti...

III. Project background: The SERDP statement of need that led to this research project focuses on a requirement for better models of the mechanisms of soot formation in combustion. Soot and its combustion precursors present human health hazards. In the case of Army fighting vehicles, such as those powered by diesel engines, it is of interest to achieve the maximum possible power density. One wa...