Development of PN emission factors for the real world urban driving conditions of a hybrid city bus

Soylu Ş.

APPLIED ENERGY, vol.138, pp.488-495, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Review
  • Volume: 138
  • Publication Date: 2015
  • Doi Number: 10.1016/j.apenergy.2014.11.001
  • Journal Name: APPLIED ENERGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.488-495
  • Keywords: Particle numbers, Emission factor, Turbo-lag, City bus, Real-world driving, Vehicle acceleration, DUTY DIESEL-ENGINE, PARTICLE NUMBER, SIZE DISTRIBUTION, FUEL CONSUMPTION
  • Kocaeli University Affiliated: No


The effects of basic engine operating parameters on particle emissions from a hybrid city bus were examined under urban driving conditions involving both constant speed and frequent acceleration. To perform the examinations, real-time data for the parameters and solid Particle Number (PN) emissions were synchronously collected. The driving conditions were specifically chosen because, depending on the driving conditions, PN emissions from a city bus may change by an order of magnitude. A PN measurement system highly sensitive to engine transients and background emissions was specifically chosen, because the particle emission levels typically found in modern diesel engines are relatively low.