International Journal of Vehicle Performance (5 papers in press)

Regular Issues

• A comprehensive review of engine performance enhanced by nano additives infused within a diesel-biodiesel blend for internal combustion engines  
  by Gaurav Ninawe 
  Abstract: The current study focuses on enhancing the combustion properties of a compression ignition (CI) engine by incorporating nano additives into a blend of diesel-biodiesel fuel Numerous scholars are currently directing their efforts towards the advancement of biofuels and their amalgamations, employing nanoparticles as a means to attain reduced exhaust emissions, enhanced combustion efficiency, and improved performance in diesel engine The utilization of nanoparticles as catalysts in biodiesel-diesel blends has demonstrated significant promise in enhancing combustion efficiency The shortened igniting delay time can be ascribed to the enhanced chemical reactivity brought about by the increased surface area of the used nanoparticles Consequently, the use of nanoparticles has led to enhancements in the uniformity of burning, fuel-air mixing, and cutback in ignition delay, thus facilitating the overall combustion of fuels This study offers a thorough examination of the latest scientific research on the utility of nanoparticles as an additive in diesel-biodiesel blends.
  Keywords: nanoparticles; combustion; nano additives; biodiesel; exhaust emissions; fuel properties; emission control.
  
  
• Composing architecture of parallel shaft transmission system in car with novel shifting strategy for effort reduction augmenting ecodesign  
  by Manish Chandra, Pranab K. Dan 
  Abstract: This article proposes a new gear-shifting strategy augmenting ecodesign, comprising its two pertinent attributes concerning fuel consumption and greenhouse gas emission in the passenger car. The strategy is germane to the gear clusters enabling the merger of gear ratios followed by devising compatible parallel shaft gearbox architectures, obtained via spatial modification of an orthodox dual clutch transmission (DCT). Gearbox configurations derived based on spatial rearrangement of gears, and to assay the working of proposed shifting strategy two architectures are considered; one with three clutches, introduced as multi-clutch transmission system (MCTS) and the other embodying two clutch arrangement and referred as modified dual clutch transmission (MDCT). Modified gearshifting sequences and algorithms are designed to ameliorate the problem of frequent gear-shifting in manual transmission. Full factorial design is utilised to synthesise configurations and, further, simulated in MATLAB Simulink and ADAMS environment to demonstrate the behaviour of proposed configurations in standard HWFET cycle.
  Keywords: multi clutch transmission; dual clutch transmission; DCT; parallel shaft gearbox; gear-shifting; gearbox architecture.
  
  
• Identification of intrusion obstacles for underground locomotives based on the fusion of LiDAR and wireless positioning technology  
  by Hongbo Wang, Yang Wang, Yang Shen 
  Abstract: Relying solely on a single camera or radar for obstacle identification is limited under the complex underground mine environment. Given the computational limitations of the hardware and the specific adaptation requirements for underground environments, this paper establishes an experimental platform for underground locomotive intrusion obstacle identification. The coordinate systems of different LiDAR are firstly unified. The height threshold method is improved to perform ground segmentation on the raw data. The Euclidean clustering algorithm is improved with the lidar Based on Scan Line Distribution (BSLD) feature to obtain information such as the outline dimensions and central position of obstacle targets. Ultra Wide Band (UWB) positioning devices are combined with recorded map information to delineate the region of interest, identify and extract intrusion obstacles within these areas. The experimental results show that the system can reliably identify intrusion obstacles, significantly enhancing the pertinency of the obstacle identification system.
  Keywords: mine automatic driving; underground locomotives; LiDAR; UWB; intrusion obstacle identification.
  
  
• A novel non-contact measurement method for CPVA centrifugal pendulum motion analysis compound of machine vision and dial  
  by Xudong Yan, Junwei Lou, Yizhe Zhang, Guangqiang Wu 
  Abstract: This article mainly discusses a non-contact CPVA centrifugal pendulum motion measurement method based on machine vision and combined with a dial. The methodology involves measuring motion on rotating objects. This method utilises the Halcon machine vision library, which has the characteristics of high precision and efficiency in the measurement process. It achieves high-precision measurement of CPVA centrifugal pendulum motion through non-contact methods. By establishing a 3D model similar to the motion principle of CPVA to render animations and outputting them frame by frame, the experimental process recognises each frame of the image through machine vision. The dial is used as a reference to obtain a specific scale coordinate and recognise the other markers to obtain its coordinates. Finally, the displacement and angle of the pendulum are indirectly measured through geometric calculations, and the calculation results are optimised to improve the accuracy of the algorithm. The experimental results show that, this method can effectively improve measurement accuracy and efficiency, providing strong data support for other research on CPVA motion.
  Keywords: centrifugal pendulum vibration absorber; CPVA; halcon; 3D model; machine vision; motion measurement.
  
  
• Aircraft tyres - measurement of mechanical characteristics  
  by Massimiliano Gobbi, Giampietro Mastinu, Giorgio Previati, Luca Miroballi, Barbara Procaccini, Thiva Ramachandran, Francesco Soraci 
  Abstract: The paper is devoted to the measurement of aircraft tyres characteristics. Namely the low and high frequency characterisation of aircraft tyres is performed. A new testing system for the indoor characterisation of aircraft tyres is presented. Two test rigs, one for the low frequency and one for high frequency tests, have been designed and realised. Measured data are processed according with the standard PAC2002, together with a short-wavelength intermediate frequency (SWIFT) model and a 3D tandem cam filter for high frequency dynamic and obstacle enveloping, i.e., the tyre model developed for automotive tyre has been employed to describe the behaviour of aircraft tyres. The results show that the low frequency behaviour of aircraft tyres can be accurately reproduced by PAC2002. Obstacle enveloping and high frequency characteristics are captured by the considered model with a sufficient degree of accuracy for engineering applications. Should dedicated noise-vibration harshness simulations be performed, this model, developed for automotive applications, should be revised for aircraft tyres.
  Keywords: aircraft tyres; static characterisation; dynamic characterisation; tyre modelling.