Design of research oriented cylinder head for a heavy duty engine

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.advisor Kaario, Ossi Hassan, Ghulam 2017-11-27T13:01:47Z 2017-11-27T13:01:47Z 2017-10-30
dc.description.abstract The swirl flow is considered beneficial to enhance air-fuel mixing in CI engines during compression stroke as the piston reaches TDC, and helps in faster burn during combustion phase. Contrary to that, with the advancement of highly pressurized fuel injection systems and optimized types of IC engines like dual fuel engine demands for low swirl or preferably no swirl intake configuration is prevailing. The swirl structure induces by intake port differs from other flow structures like tumble; swirl not only survives during compression stroke but also throughout the expansion stroke. Therefore, swirl influences spray evolution and evaporation process during combustion and affect heat release due to the crumbling of the large-scale structure into small scale by adding more turbulence. This thesis work is aimed at designing, performing steady-state CFD analysis, and exercising additive manufacturing technique for a new single-cylinder research-oriented cylinder head with no induced swirl flow. The study also incorporates inclusive evaluation of flow structures produced by existing model of cylinder head through computational fluid analysis by employing Star-CCM+ software and experimental validation; then conjunction with that inquisition a new directed port model is devised. In addition, new ports position is designed, analyzed, and final model is selected based on admissible results. The new exhaust ports, cooling channels, and the main body of the cylinder head with appropriate thickness values are also designed. Additive manufacturing is a customized fabrication process to produce cost-effective products. AM has completely revolutionized current manufacturing techniques with a diverse selection of methods for different materials. Selective laser sintering is one of the powders based AM techniques with a range of available materials as polymers and metals used to contrive good quality densely structured light parts with flexible, interlocking and functional features. Therefore, SLS technique is adopted for new cylinder head manufacturing for later experimentally check of swirl flow. en
dc.format.extent 89+3
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.title Design of research oriented cylinder head for a heavy duty engine en
dc.type G2 Pro gradu, diplomityö fi Insinööritieteiden korkeakoulu fi
dc.subject.keyword design en
dc.subject.keyword CFD en
dc.subject.keyword dual fuel en
dc.subject.keyword additive manufacturing en
dc.subject.keyword cylinder head en
dc.identifier.urn URN:NBN:fi:aalto-201711277782
dc.programme.major Computational Fluid Modeling fi
dc.programme.mcode MEC-E2010 fi
dc.type.ontasot Master's thesis en
dc.type.ontasot Diplomityö fi
dc.contributor.supervisor Larmi, Martti
dc.programme Master’s Programme in Mechanical Engineering fi
local.aalto.electroniconly yes
local.aalto.openaccess yes

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