Portable emissions measurement systems (PEMS) for gaseous pollutants were firstly
introduced in the United States regulation to check the in-use compliance of heavy-duty …

As the vehicle technology evolves and becomes more complex, the ability to monitor certain
uncontrollable factors is possible through various engine management system calibration …

This study assessed the on-road gaseous and particulate emissions from three current
technology gasoline direct injection (GDI) vehicles using portable emissions measurement …

Humans are more likely to be exposed to ultrafine particles (UFPs) emitted by light-duty
gasoline vehicles (LDGVs) in urban road traffic, which can cause serious bodily harm. In this …

The aim of this study is to verify the reliability of NOx emissions measured using Smart
Emissions Measurement System (SEMS) equipment in comparison with the NOx emissions …

Hybrid electric vehicle (HEV) technology is critical to reduce the impact of the internal
combustion engines on air pollution and greenhouse gases. HEVs have an advantage in …

Every year, exhaust gas regulations are getting stricter with the intention to solve the
average air pollution problem, however, local roadside pollution is still a pressing issue. In …

The REAL NOx regulation requires tracking and reporting of NOx emissions starting in
2022MY for both medium-duty and heavy-duty diesel vehicles with potential to be …

The effects of different olefin contents in fuel (nominally 8.2 and 17.2% in volume) on the
performance and exhaust emissions of a modern gasoline direct injection engine at speeds …

Light-duty gasoline vehicle (LDGV) tailpipe emission rates can be quantified based on
pollutant concentrations measured using portable emission measurement systems (PEMS) …