Oblique detonation engines are being a centre of multiple kinds of research. Likewise, this paper provides the simulation at various Mach numbers to observe the pattern of combustion in an oblique detonation engine. considering Rahul et al paper[5] as a reference same conditions of pressure, temperature and wedge angles were used in this paper. yet, a different model of a chemical designed by M.O Conaire and H.J Curran[7] was used and simulation was performed at several Mach numbers until a fully developed combustion had been achieved.