In　the　context　of　the　increasing　intensification　of　diesel　engines,　the　extreme　thermodynamic　conditions　within　the　cylinder　pose　challenge　on　the　modeling　of　fuel　properties.　Accurate　modeling　of　fluid　thermophysical　properties　is　crucial　in　internal　combustion　engine　fuel　simulations.　In　this　work,　a　novel　VT-PR　equation　of　state　(EoS)　is　proposed,　while　retaining　the　computational　advantages　of　the　cubic　formulation.　In　contrast　to　previous　studies,　this　EoS　significantly　improves　modeling　accuracy　for　fuels　under　in-cylinder　thermodynamic　conditions　by　incorporating　a　new　Gaussian　correction　function.　Furthermore,　it　has　been　thoroughly　validated　for　thermodynamic　consistency.　By　integrating　residual　entropy　scaling　into　this　EoS,　the　derived　transport　property　model　accurately　represents　and　reasonably　extrapolates　in　the　supercritical　region　where　there　is　limited　experimental　data.　In　a　case　study,　the　developed　thermophysical　property　model　is　utilized　in　the　simulation　of　engine　combustion　network　(ECN)　Spray　A,　markedly　enhancing　the　prediction　accuracy　during　the　initial　stages　of　the　spray.　This　demonstrates　its　substantial　potential　for　application　in　numerical　simulation.