| Blowby is the result of high pressure gases and oils escaping around piston rings and venting to the atmosphere. |
| This again offers great advantages in respect of sealing and reduction of blowby, while the very narrow gap between piston and cylinder supports the piston rings in their work. |
| The 2D CFD-model can be used to study the influence of the various ring-pack design parameters on the ring friction, blowby and oil transport. |
| An analytical approach is implemented in 2D CFD-model to consider the mass-flow through the ring gaps allowing the estimation of inter-ring pressures and blowby into the crankcase. |
| Next, the chapter explores the potential operating problems such as foamy crude, paraffin, sand, liquid carryover, gas blowby, and liquid slugs. |
| In particular the chemical properties of the blowby gas, which has a low ignition point due to enrichment with residual fuel, have to be taken into consideration. |
