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Real-world fuel consumption of light-duty passenger vehicles using on-board diagnostic (OBD) systems

Xuan Zheng, Sheng Lu, Liuhanzi Yang, Min Yan, Guangyi Xu, Xiaomeng Wu, Lixin Fu, Ye Wu

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 2, doi: 10.1007/s11783-019-1212-6

Abstract: An increasing discrepancy between real-world and type-approval fuel consumption for light-duty passengervehicles (LDPVs) has been reported by several studies.The results showed that the normalized NEDC real-world fuel consumption of the tested vehicles was 13%

Keywords: Fuel consumption     Light-duty passenger vehicles     On-board diagnostic systems    

Real-Time Black Carbon Emissions from Light-Duty Passenger Vehicles Using a Portable Emissions Measurement

Xuan Zheng,Liqiang He,Xiaoyi He,Shaojun Zhang,Yihuan Cao,Jiming Hao,Ye Wu,

Engineering 2022, Volume 16, Issue 9,   Pages 73-81 doi: 10.1016/j.eng.2020.11.009

Abstract: On-road vehicles are an important source of anthropogenic BC.However, there are major uncertainties in the estimates of the BC emissions from on-road light-duty passengervehicles (LDPVs), and results obtained with the portable emissions measurement system (PEMS) methodWe demonstrated that the BC emission factors (EFs) of gasoline direction injection (GDI) engine vehiclesmg·km−1, which are higher than the EFs of port fuel injection (PFI) engine vehicles

Keywords: Black carbon     Light-duty gasoline vehicles     Portable emissions measurement system     Real-time emissions    

Characterization and prediction of tailpipe ammonia emissions from in-use China 5/6 light-duty gasolinevehicles

Frontiers of Environmental Science & Engineering 2024, Volume 18, Issue 1, doi: 10.1007/s11783-024-1766-9

Abstract:

● Rich combustion strategy in cold-start period caused more NH3 emission.

Keywords: NH3 instantaneous emissions     Catalytic temperature     Vehicle specific power     Combustion efficiency     Emission prediction    

Real drive cycles analysis by ordered power methodology applied to fuel consumption, CO

Pol Masclans Abelló, Vicente Medina Iglesias, M. Antonia de los Santos López, Jesús Álvarez-Flórez

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 1, doi: 10.1007/s11783-020-1296-z

Abstract: Abstract • New method named CAbOP is presented based on ordering data according to power. • Three emission models are used and their emission results compared. • Emissions data are analyzed in real driving cycles under CAbOP criteria. • Methodology to collect data and reconstruct lost data in real urban driving cycles. In this work three fuel consumption and exhaust emission models, ADVISOR, VT-MICRO and the European Environmental Agency Emission factors, have been used to obtain fuel consumption (FC) and exhaust emissions. These models have been used at micro-scale, using the two signal treatment methods presented. The manuscript presents: 1) a methodology to collect data in real urban driving cycles, 2) an estimation of FC and tailpipe emissions using some available models in literature, and 3) a novel analysis of the results based on delivered wheel power. The results include Fuel Consumption (FC), CO2, NOx and PM10 emissions, which are derived from the three simulators. In the first part of the paper we present a new procedure for incomplete drive cycle data treatment, which is necessary for real drive cycle acquisition in high density cities. Then the models are used to obtain second by second FC and exhaust emissions. Finally, a new methodology named Cycle Analysis by Ordered Power (CAbOP) is presented and used to compare the results. This method consists in the re-ordering of time dependant data, considering the wheel mechanical power domain instead of the standard time domain. This new strategy allows the 5 situations in drive cycles to be clearly visualized: hard breaking zone, slowdowns, idle or stop zone, sustained speed zone and acceleration zone. The complete methodology is applied in two real drive cycles surveyed in Barcelona (Spain) and the results are compared with a standardized WLTC urban cycle.

Keywords: >/PM10/CO2 emissions     Wheel mechanical power domain     Worldwide Harmonized Light-DutyVehicles Test Cycle (WLTC)    

Implementation of a flexible Major Vacation Toll-free Program for small passenger vehicles in China

Meng XU, Ziyou GAO

Frontiers of Engineering Management 2017, Volume 4, Issue 4,   Pages 498-499 doi: 10.15302/J-FEM-2017111

Impact of gasoline engine deposits on light duty vehicle emissions: in-use case study in Beijing, China

Xin YUE, Ye WU, Xianjiang HUANG, Yao MA, Yuan PANG, Xiaofeng BAO, Jiming HAO

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 5,   Pages 717-724 doi: 10.1007/s11783-012-0438-3

Abstract: Tailpipe emissions from light-duty gasoline vehicles usually deteriorate over time.Six in-use light-duty gasoline vehicles in Beijing were tested to investigate the impact of engine depositsEmissions under cold start and hot running test conditions from the six light duty vehicles were measuredResults show that although individual vehicles reacted differently for each of the pollutants, elimination

Keywords: engine deposit     fuel quality     detergency     vehicle emission    

Key point selection in large-scale FBG temperature sensors for thermal error modeling of heavy-duty CNC

Jianmin HU, Zude ZHOU, Quan LIU, Ping LOU, Junwei YAN, Ruiya LI

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 4,   Pages 442-451 doi: 10.1007/s11465-019-0543-0

Abstract: Compared with small- and medium-sized CNC machine tools, heavy-duty CNC machine tools require the usetemperature sensors that are connected in series through a thin optical fiber are mounted on a heavy-dutydemonstrates good prediction effects and strong robustness under different working conditions of the heavy-duty

Keywords: thermal error     heavy-duty CNC machine tools     FBG     key TMPs     prediction model    

Coupling analysis of passenger and train flows for a large-scale urban rail transit system

Frontiers of Engineering Management 2023, Volume 10, Issue 2,   Pages 250-261 doi: 10.1007/s42524-021-0180-2

Abstract: Coupling analysis of passenger and train flows is an important approach in evaluating and optimizingThis study proposes a passenger–train interaction simulation approach to determine the coupling relationshipbetween passenger and train flows.origin–destination demand, train timetable, and network topology, the proposed approach can restore passengerThis approach can also obtain each passenger’s complete travel chain, which can be used to analyze (including

Keywords: urban rail transit     coupling analysis     passenger–train interaction     large-scale simulation    

High-emitter identification for heavy-duty vehicles by temporal optimization LSTMand an adaptive dynamic Research Article

Zhenyi XU, Renjun WANG, Yang CAO, Yu KANG

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 11,   Pages 1633-1646 doi: 10.1631/FITEE.2300005

Abstract: Heavy-duty diesel vehicles are important sources of urban nitrogen oxides (NO) in actual applicationsThe detection and control of heavy-duty diesel emissions are critical for protecting public health.Currently, vehicles on the road must be regularly tested, every six months or once a year, to filterHowever, it is difficult to effectively screen high-emission vehicles in time with a long interval betweenIn this paper, we propose a long short-term memory (LSTM) and adaptive approach to identify heavy-duty

Keywords: High-emitter identification     Temporal optimization     On-board diagnostic device (OBD)     Dynamic threshold    

dynamic mechanical characteristics and turning tool life under the conditions of excessively heavy-duty

Genghuang HE, Xianli LIU, Fugang YAN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 3,   Pages 329-334 doi: 10.1007/s11465-012-0303-x

Abstract:

The dynamic mechanical characteristics of excessively heavy-duty cutting were analyzed based on theinvestigating the influence of dynamic mechanical characteristics on the tools’ failure in limited heavy-dutyThe heavy-duty cutting tool was damaged in the form of a shearing fracture.

Keywords: extreme loading cutting     shear flow stress     dynamic cutting force     fatigue fracture    

The important revelation of “7·23” passenger train accident

Sun Yongfu

Strategic Study of CAE 2012, Volume 14, Issue 12,   Pages 4-9

Abstract:

The process and reasons of “7·23” passenger train

Keywords: passenger train accident     the research and development management     the access management     the emergency    

Development of Heavy-Duty Gas Turbines in China in the New Era

Shu Guogang, Yu Chunhua, Shen Guohua, He Ai, Wang Zhaofeng, Wang Xiaobo

Strategic Study of CAE 2022, Volume 24, Issue 6,   Pages 184-192 doi: 10.15302/J-SSCAE-2022.06.017

Abstract:

The heavy-duty gas turbine industry is key to national energy securityprojects and driven by the carbon peaking and carbon neutrality goals, strategic research on heavy-dutyIn this study, we summarize the international experience in the development of heavy-duty gas turbineThe technical development directions of heavy-duty gas turbines include advanced materials and intelligent

Keywords: heavy-duty gas turbine     technical system     technical direction     high-efficiency power generation     power    

Optimization design and corollary equipment of box girder prefabrication field for passenger express

Wang Zhibin,Wang Qingming

Strategic Study of CAE 2009, Volume 11, Issue 1,   Pages 67-74

Abstract: results of the project, the Research on the Industrialization of Freely Supported Box and Girder for Passenger

Keywords: passenger express line     girder field     site selection     plane layout     corollary equipment    

Modern diesel engine technology for passenger cars

Han Zhiyu,Chen Zheng,Liu Jingping,Liu Yun

Strategic Study of CAE 2009, Volume 11, Issue 11,   Pages 30-36

Abstract: advantages over gasoline engines, therefore advanced diesel technology is an important direction for passengerAt present there is a visible gap in the diesel engine technology for passenger cars between China andadvanced diesel engines with low fuel consumption and pollutant emissions, and meet the need of the future passenger

Keywords: passenger car     diesel engine     energy conservation     environment protection     technology difficulty    

Photocatalysis: from solar light to hydrogen energy

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 565-567 doi: 10.1007/s11708-021-0784-6

Title Author Date Type Operation

Real-world fuel consumption of light-duty passenger vehicles using on-board diagnostic (OBD) systems

Xuan Zheng, Sheng Lu, Liuhanzi Yang, Min Yan, Guangyi Xu, Xiaomeng Wu, Lixin Fu, Ye Wu

Journal Article

Real-Time Black Carbon Emissions from Light-Duty Passenger Vehicles Using a Portable Emissions Measurement

Xuan Zheng,Liqiang He,Xiaoyi He,Shaojun Zhang,Yihuan Cao,Jiming Hao,Ye Wu,

Journal Article

Characterization and prediction of tailpipe ammonia emissions from in-use China 5/6 light-duty gasolinevehicles

Journal Article

Real drive cycles analysis by ordered power methodology applied to fuel consumption, CO

Pol Masclans Abelló, Vicente Medina Iglesias, M. Antonia de los Santos López, Jesús Álvarez-Flórez

Journal Article

Implementation of a flexible Major Vacation Toll-free Program for small passenger vehicles in China

Meng XU, Ziyou GAO

Journal Article

Impact of gasoline engine deposits on light duty vehicle emissions: in-use case study in Beijing, China

Xin YUE, Ye WU, Xianjiang HUANG, Yao MA, Yuan PANG, Xiaofeng BAO, Jiming HAO

Journal Article

Key point selection in large-scale FBG temperature sensors for thermal error modeling of heavy-duty CNC

Jianmin HU, Zude ZHOU, Quan LIU, Ping LOU, Junwei YAN, Ruiya LI

Journal Article

Coupling analysis of passenger and train flows for a large-scale urban rail transit system

Journal Article

High-emitter identification for heavy-duty vehicles by temporal optimization LSTMand an adaptive dynamic

Zhenyi XU, Renjun WANG, Yang CAO, Yu KANG

Journal Article

dynamic mechanical characteristics and turning tool life under the conditions of excessively heavy-duty

Genghuang HE, Xianli LIU, Fugang YAN

Journal Article

The important revelation of “7·23” passenger train accident

Sun Yongfu

Journal Article

Development of Heavy-Duty Gas Turbines in China in the New Era

Shu Guogang, Yu Chunhua, Shen Guohua, He Ai, Wang Zhaofeng, Wang Xiaobo

Journal Article

Optimization design and corollary equipment of box girder prefabrication field for passenger express

Wang Zhibin,Wang Qingming

Journal Article

Modern diesel engine technology for passenger cars

Han Zhiyu,Chen Zheng,Liu Jingping,Liu Yun

Journal Article

Photocatalysis: from solar light to hydrogen energy

Journal Article