Results 171 to 180 of about 4,055,359 (253)

On-road vehicle emissions and their control in China: A review and outlook

open access: yesScience of the Total Environment, 2017
The large (26-fold over the past 25years) increase in the on-road vehicle fleet in China has raised sustainability concerns regarding air pollution prevention, energy conservation, and climate change mitigation.
Ye Wu, Shaojun Zhang, Huan Liu
exaly   +2 more sources

Updating On-Road Vehicle Emissions for China: Spatial Patterns, Temporal Trends, and Mitigation Drivers.

Environmental Science and Technology, 2023
Vehicle emissions in China have been decoupled from rapid motorization owing to comprehensive control strategies. China's increasingly ambitious goals for better air quality are calling for deep emission mitigation, posing a need to develop an up-to-date
Yifan Wen   +5 more
semanticscholar   +1 more source

Study of durability of diesel vehicle emissions performance based on real driving emission measurement.

Chemosphere, 2022
Diesel vehicle emissions generally deteriorate with vehicle mileage due to the wear and deterioration of vehicle parts. Most of the experimental studies on vehicle emission durability were carried out based on the standard operation cycles of engine or ...
L. Hao   +7 more
semanticscholar   +1 more source

Capital allocation efficiency, technological innovation and vehicle carbon emissions: Evidence from a panel threshold model of Chinese new energy vehicles enterprises

Science of the Total Environment, 2021
From the micro-enterprise level, this paper analyzes the relationship between the capital allocation efficiency of new energy vehicle enterprises and vehicle carbon emissions with technological innovation as the threshold variable.
Tao Sun
exaly   +2 more sources

Methane Emissions from Vehicles

Environmental Science & Technology, 2004
Methane (CH4) is an important greenhouse gas emitted by vehicles. We report results of a laboratory study of methane emissions using a standard driving cycle for 30 different cars and trucks (1995-1999 model years) from four different manufacturers. We recommend the use of an average emission factor for the U.S.
E K, Nam, T E, Jensen, T J, Wallington
openaire   +2 more sources

Motor Vehicle Emissions Variability

Journal of the Air & Waste Management Association, 1996
Test-to-test variability has been observed by many current testing methods, including the Federal Test Procedure, the IM240 dynamometer test, the idle test common to many Inspection and Maintenance programs, and on-road remote sensing. The variability is attributable to the vehicle, not to the testing procedure.
Gary A, Bishop   +2 more
openaire   +2 more sources

Emission factors and emission inventory of diesel vehicles in Nepal

Science of The Total Environment, 2022
A comprehensive emission inventory of the transport sector through fuel-based emission factors (EFs) was developed for the first time in Nepal. This study estimates air pollutants emission from diesel vehicles between the years 1989 and 2018 based on national statistical data, average vehicle kilometers travelled, fuel mileage, and measurement-based ...
Bhupendra, Das   +6 more
openaire   +2 more sources

How aging process changes characteristics of vehicle emissions? A review

Critical reviews in environmental science and technology, 2020
With increasing road and non-road vehicles in use, air quality and human health have been under greater pressure in recent years. Generally, changes involving aerosol-based vehicular pollutants are aging processes, which can alter vehicle emissions to ...
Huan Liu   +5 more
semanticscholar   +1 more source

Past and future trends of vehicle emissions in Tianjin, China, from 2000 to 2030

Atmospheric Environment, 2019
The rapid growth of the vehicle population was regarded as an important factor that contributed to the urban air pollution in China during the past decades.
Shida Sun, Gang Zhao, Ting Wang
exaly   +2 more sources

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