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- Barrier (1)
- Benefit (1)
- Building information modelling (1)
- Building services engineering (1)
- Conducive measure (1)
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- Construction (1)
- Conventional vehicles (1)
- Convoy testing mode (1)
- Cyclic loading; cyclic tension-stiffening fixed-angle truss model; reinforced concrete membrane element; shear; tension stiffening (1)
- Emission factors; High-emitters identification; Real driving emissions; Transient chassis dynamometer (1)
- Exhaust after-treatment (1)
- Fuel consumption and emissions performance (1)
- Fuel injection (1)
- Hybrid electric vehicles (1)
- Intake system (1)
- Iterative root-finding technique; reinforced concrete membrane element; shear; tension stiffening; tension-stiffening fixed-angle truss model (1)
- Malfunctions simulation (1)
- Portable emission measurement system (1)
- Real-driving emissions (1)
- Transient chassis dynamometer (1)
Articles 1 - 6 of 6
Full-Text Articles in Engineering
Building Information Modelling For Building Services Engineering: Benefits, Barriers And Conducive Measures, Wai Yee Betty Chiu, Joseph H.K. Lai
Building Information Modelling For Building Services Engineering: Benefits, Barriers And Conducive Measures, Wai Yee Betty Chiu, Joseph H.K. Lai
Faculty of Science & Technology (THEi)
Purpose – Mandating the use of building information modelling (BIM) in building projects has sprawled, but the uptake of BIM in building services engineering (BSE) remains sluggish. The purpose of this paper is to explore how to achieve wider adoption of BIM in BSE. Design/methodology/approach – Through an extensive literature review, the benefits of, barriers to and measures conducive to, using BIM for BSE were identified and classified. Built upon the review and a focus group meeting, a questionnaire was devised for an industry-wide survey in Hong Kong and the survey data were processed by statistical analyses. Findings – On …
Fuel Consumption And Emissions Performance Under Real Driving: Comparison Between Hybrid And Conventional Vehicles., Yuhan Huang, Surawski C. Nic, Organ Bruce, John L. Zhou, Oscar H.H Tang, Edward F.C. Chan
Fuel Consumption And Emissions Performance Under Real Driving: Comparison Between Hybrid And Conventional Vehicles., Yuhan Huang, Surawski C. Nic, Organ Bruce, John L. Zhou, Oscar H.H Tang, Edward F.C. Chan
Faculty of Science & Technology (THEi)
Hybrid electric vehicles (HEVs) are perceived to be more energy efficient and less polluting than conventional internal combustion engine (ICE) vehicles. However, increasing evidence has shown that real-driving emissions (RDE) could be much higher than laboratory type approval limits and the advantages of HEVs over their conventional ICE counterparts under real-driving conditions have not been studied extensively. Therefore, this study was conducted to evaluate the real-driving fuel consumption and pollutant emissions performance of HEVs against their conventional ICE counterparts. Two pairs of hybrid and conventional gasoline vehicles of the same model were tested simultaneously in a novel convoy mode using …
Effect Of Limited Tension Stiffening On Behavior Of Reinforced Concrete Panels In Shear., Xueying Wang, Jun Shang Kuang
Effect Of Limited Tension Stiffening On Behavior Of Reinforced Concrete Panels In Shear., Xueying Wang, Jun Shang Kuang
Faculty of Science & Technology (THEi)
The principal tensile strength of cracked concrete is not well defined in existing models for predicting the shear response of reinforced concrete (RC) membrane elements; hence, the shear strength of RC elements is generally overestimated due to the unrealistic decreasing slope of tensile stress as the crack accumulates. In this paper, the effect of limited tension-stiffening behavior of cracked RC panels under pure shear stresses is investigated by proposing an analytical model named as the tension-stiffening fixed-angle truss model (TFTM). The proposed model includes the limited tension-stiffening effect of post-cracking reinforced concrete and adopts the fixed-angle theory. In the analysis …
Characterisation Of Diesel Vehicle Emissions And Determination Of Remote Sensing Cutpoints For Diesel High-Emitters., Yuhan Huang, Organ Bruce, John L. Zhou, Surawski C. Nic, Yat-Shing Yam, Edward F.C. Chan
Characterisation Of Diesel Vehicle Emissions And Determination Of Remote Sensing Cutpoints For Diesel High-Emitters., Yuhan Huang, Organ Bruce, John L. Zhou, Surawski C. Nic, Yat-Shing Yam, Edward F.C. Chan
Faculty of Science & Technology (THEi)
Diesel vehicles are a major source of air pollutants in cities and have caused significant health risks to the public globally. This study used both on-road remote sensing and transient chassis dynamometer to characterise emissions of diesel light goods vehicles. A large sample size of 183 diesel vans were tested on a transient chassis dynamometer to evaluate the emission levels of in-service diesel vehicles and to determine a set of remote sensing cutpoints for diesel high-emitters. The results showed that 79% and 19% of the Euro 4 and Euro 5 diesel vehicles failed the transient cycle test, respectively. Most of …
Impact Of Potential Engine Malfunctions On Fuel Consumption And Gaseous Emissions Of A Euro Vi Diesel Truck., Yuhan Huang, Elvin C.Y. Ng, Yat-Shing Yam, Casey K.C. Lee, Surawski C. Nic, Wai-Chuen Mok, Organ Bruce, John L. Zhou, Edward F.C. Chan
Impact Of Potential Engine Malfunctions On Fuel Consumption And Gaseous Emissions Of A Euro Vi Diesel Truck., Yuhan Huang, Elvin C.Y. Ng, Yat-Shing Yam, Casey K.C. Lee, Surawski C. Nic, Wai-Chuen Mok, Organ Bruce, John L. Zhou, Edward F.C. Chan
Faculty of Science & Technology (THEi)
Although new vehicles are designed to comply with specific emission regulations, their in-service performance would not necessarily achieve them due to wear-and-tear and improper maintenance, as well as tampering or failure of engine control and exhaust after-treatment systems. In addition, there is a lack of knowledge on how significantly these potential malfunctions affect vehicle performance. This study was therefore conducted to simulate the effect of various engine malfunctions on the fuel consumption and gaseous emissions of a 16-tonne Euro VI diesel truck using transient chassis dynamometer testing. The simulated malfunctions included those that would commonly occur in the intake, fuel …
Effect Of Limited Tension Stiffening In Rc Elements Under Cyclic Loads., Xueying Wang, Jun Shang Kuang
Effect Of Limited Tension Stiffening In Rc Elements Under Cyclic Loads., Xueying Wang, Jun Shang Kuang
Faculty of Science & Technology (THEi)
The tension capacity in cracked concrete is not well defined in existing shear models for reinforced concrete (RC) membrane elements under cyclic reversed loading, and the shear strength of RC elements is consequently overestimated due to the deviated decreasing branch of envelope of cyclic tensile stress-strain relationship. In this paper, the cyclic effect of limited tension stiffening of cracked RC elements is evaluated by proposing an analytical model named as the cyclic tension-stiffening fixed-angle truss model (CTFTM). The proposed model, based on fixed-angle theory, integrates unloading and reloading rules and accumulated damage into the limited tension-stiffening effect under cyclic loading …