Application of Compressed Natural Gas (CNG) in diesel engines has always been important, especially in the field of automotive engineering. This is due to easy accessibility, better mixing quality and good combustion characteristics of the CNG fuel. In this study the application of CNG fuel along with diesel oil in a heavy duty direct-injection automotive diesel engine is experimentally investi...

Mechanical vibrations have a significant impact on ride comfort; the driver is constantly distracted as result. Volumetric engine inertial unbalances and road profile irregularities create mechanical vibrations. The purpose of this study to employ optimization algorithms identify structural elements that contribute vibration propagation provide optimal solutions for reducing induced by unbalanc...

A mathematical model of a vehicle dynamic system capable of predicting ride comfort can be a useful tool for vehicle design and development engineers at the concept design stage. The aim of this study was to develop a simple mathematical model of a vehicle with seat and occupant to investigate how vehicle dynamic parameters affect the vibration transmission and ride quality. A 13 degrees-offree...

in this study it has been tried, to compare results and convergence rate of sensitivity analysis and conjugate gradient algorithms to reduce fuel consumption and increasing engine performance by optimizing the timing of opening and closing valves in xu7/l3 engine. in this study, considering the strength and accuracy of simulation gt-power software in researches on the internal combustion engine...

Binaural Transfer Path Analysis (BTPA) was originally developed for assessing the binaural contributions of individual vehicle noise paths. It is a powerful modeling tool enabling engineers to explore noise transfer mechanisms by distinguishing between excitation source strengths and the transfer behavior of individual elements. The method is well-known for powertrain noise analysis, including ...

Mounting bias is the major error source of Airborne LIDAR system. In this paper, an automated calibration method for estimating LIDAR system mounting parameters is introduced. LIDAR direct geo-referencing model is used to calculate systematic errors. Due to LIDAR footprints discretely sampled, the real corresponding laser points are hardly existence among different strips. The traditional corre...