Prof. Longfei Chen

Beihang University, China

Longfei Chen, Professor at Beihang University. He received his undergraduate degree in Automotive Engineering from Tsinghua University, his double master's degree from RWTH Aachen University and Tsinghua University, and his doctoral degree from the University of Oxford. He is a member of SAE E31 committee and EU PMP committee participating the revision of aviation and vehicular emission regulations. He is the Vice Chairman and Secretary General of The Aviation Internal Combustion Engine Branch (AICE) of CSICE, Guest Editor-in-Chief of SCI Journal Processes and Symmetry, and Invited Editorial Board Member of Internal Combustion Engine Engineering, etc.

His main research areas are combustion pollutant detection and multiphase flow thermophysics, and aero-engine bio-jet fuel tests and high-altitude tests. He has led one national standard in the field of aviation, and one group standard. As the first author, he is the recipient of the First Prize of Science and Technology Invention of Chinese Society of Internal Combustion Engines, the First Prize of Particle Testing of Chinese Society of Particuology, and the Innovation and the Research Award of Sino-French Team Cooperation.

Title: Aviation Particle Emission Measurement

Abstract：Aero engines emit large amounts of non-volatile particulate matter around airports and at cruising altitudes. In addition to causing damage to the atmosphere, they also form contrails and cirrus clouds at high altitudes, which affect solar radiation and water vapor distribution and contribute to global warming. The International Civil Aviation Organization (ICAO) has been using smoke number standards to mandate aero-engine black carbon emissions, but with advances in engine combustion technology, smoke number based measurement techniques are no longer able to accurately assess the level of particulate matter emissions from advanced aircraft engines. ICAO will soon implement the latest regulations of aero-engine particle number emissions, with a particular focus on nano-scale non-volatile particulate matter in the exhaust, requiring significantly higher measurement sensitivity and accuracy than previous regulations. This presentation will discuss the evolution of aero-engine particulate emission standards, and relevant measurement principles, instrument development and engine test results.