Abstract
Effect of a single lubricant oil droplet on gasoline-air mixture was investigated. Droplet diameter and temperature were changed as parameters by using an injector developed for this study. Test results showed that the ignition timing initiated by an oil droplet became early with decrease in droplet diameter or increase in droplet temperature. However, it was later than auto-ignition timing of gasoline-air mixture except some particular conditions. Heated oil droplet was required to initiate start of combustion followed by flame propagation.
