Results 1 to 10 of about 784 (156)

Local government intervention and energy utilization efficiency: evidence from China’s NEDC policy

Frontiers in Environmental Science
Improving energy utilization efficiency is an essential way to save energy and reduce emissions. This article collects data from 3,164 samples in China and uses the SBM-DEA method to calculate energy utilization efficiency.
Saijun Wu, Tianhong Jiang, Min Hong
exaly   +4 more sources

COMPARISON OF FUEL CONSUMPTION AND RECOVERABLE ENERGY ACCORDING TO NEDC AND WLTP CYCLES OF A VEHICLE

CT&F Ciencia, Tecnología & Futuro, 2022
Since 1997, the NEDC (New European Driving Cycle) has been used to measure CO2 emissions. However, because this cycle is unable to accurately replicate real-world driving conditions, a new procedure has been developed.
M. İhsan Karamangil, Merve Tekin
doaj   +3 more sources

Comparative Evaluation of the Effect of Vehicle Parameters on Fuel Consumption under NEDC and WLTP [PDF]

Energies, 2020
Higher speeds, faster acceleration and longer duration need a more realistic driving cycle. As a result, a new test procedure that reflects real-world driving conditions has been applied since 2017, and the previous development environment optimized for ...
Hyeonjik Lee, Kihyung Lee
doaj   +2 more sources

Analysis of vehicle emission measurements on the new WLTC, the NEDC and the CADC [PDF]

Transportation Research, Part D: Transport and Environment, 2014
Several studies have shown that the type-approval data is not representative for real-world usage. Consequently, the emissions and fuel consumption of the vehicles are underestimated. Aiming at a more dynamic and worldwide harmonised test cycle, the new Worldwide Light-duty Test Cycle is being developed.
Louis Sileghem, John May, Cecile Favre   +2 more
exaly   +3 more sources

Can urban e-commerce transformation improve economic resilience? a quasi-natural experiment from China. [PDF]

PLoS ONE
The impact of urban e-commerce transformation on economic resilience can help a country improve its ability to resist risks and seize the initiative in economic development.
Xiekui Zhang, Tongsheng Tang, Erhang Mo
doaj   +2 more sources

The comparison of gasoline powered vehicle and serial hybrid vehicle on emissions [PDF]

Heliyon
In this study, a vehicle model was developed to examine the performance of a gasoline-powered vehicle and a vehicle with a serial-hybrid-drive system. An extra-downsized gasoline hybrid engine was used as a range extender in the vehicle model.
Murat Ferhat Dogdu, Iskender Atilla Reyhancan   +1 more
doaj   +2 more sources

Design of Electric Vehicle Two-speed Transmission Ratio based on NEDC

Jixie chuandong, 2020
Aiming at the design of transmission ratio for two-speed transmission of pure electric vehicle， under the condition that parameters of vehicle and motor are all determined， choosing the transmission ratios as the design variables， the optimization ...
Shuwang Wang, Jian Liu, Zhilin Ma, Leiming Wang   +3 more
doaj   +1 more source

Analysis of the Influence of Lubricant on Transmission Efficiency of Transmission Under NEDC Operating Condition

Jixie chuandong, 2017
The transmission is a key part of the drive train,and it has a direct impact on the vehicle NEDC fuel consumption. In order to improve the NEDC integrated fuel consumption of a MPV model,a test method of transmission efficiency based on NEDC is proposed.
Mo Yimin, Dong Jixing, Wang Jun, Yin Kaifeng, Liang Wei   +4 more
doaj   +1 more source

Gaseous Emissions from Light-Duty Vehicles: Moving from NEDC to the New WLTP Test Procedure

Environmental Science & Technology, 2015
The Worldwide Harmonized Light Duty Test Procedure (WLTP), recently issued as GTR15 by UNECE-WP29, is designed to check the pollutant emission compliance of Light Duty Vehicles (LDVs) around the world and to establish the reference vehicle fuel consumption and CO2 performance. In the course of the development of WLTP, the Joint Research Center (JRC) of
Alessandro Marotta, Jelica Pavlovic, Biagio Ciuffo   +2 more
exaly   +4 more sources

MRAS based speed sensorless control of PMSM Drive for urban electric vehicle [PDF]

Revista Română de Informatică și Automatică, 2023
This paper gives a clear visual appearance of the speed predictive control by a Model Reference Adaptive System (MRAS) observer for a Permanent-Magnet Synchronous Motor which is the heart of the electric vehicle’s powertrain, The proposed approach used ...
Bachir BENDJEDIA, Saad CHOUIREB
doaj   +1 more source