An LES version ignition model, WSSIM, was developed by taking the effect of turbulence on wrinkling and stretching the flame surface into account. Next, this ignition model was combined with an innovative swept-volume algorithm based combustion model to simulate the cycle to cycle variations of ignition and combustion processes in premixed propane/air mixtures. The open source software OpenFOAM-5.0 helped to implement and validate the models.

This book focuses on gasoline compression ignition (GCI) which offers the prospect of engines with high efficiency and low exhaust emissions at a lower cost. A GCI engine is a compression ignition (CI) engine which is run on gasoline-like fuels (even on low-octane gasoline), making it significantly easier to control particulates and NOx but with high efficiency. The state of the art development to make GCI combustion feasible on practical vehicles is highlighted, e.g., on overcoming problems on cold start, high-pressure rise rates at high loads, transients, and HC and CO emissions. This book will be a useful guide to those in academia and industry.