Validation of designand development-tools for Diesel injectors with measurements from a single cylinder research engine

Abstract

All sectors of diesel engines are facing challenges and require ongoing optimization. While for smaller engines, latest emission legislation comes in the form of real driving emissions, marine engines are subject to the sulphur cap in 2020 set by the International Maritime Organization. Not being affected by the trend of full electrification due to limitations in energy storage, large engines in particular will remain subject to optimization for a long time to come. Considering the rising need for global transportation and the resulting share of large engines regarding worldwide soot, NOX and CO2 emissions these engines will also stay in the center of public attention.

In the near future the rise of new applications like Dual Fuel Engines and high pressure methane direct injection causes an increase in engine complexity. Especially in Dual Fuel Engines, the wish to integrate main and pilot injector leads to challenges regarding the stability and symmetry of the pilot injection in order to guarantee a reliable engine operation [4]. Further challenges can arise from the necessary reduction of greenhouse gases, which will create a market for E-Fuels [8]. Fuel systems of the future will have to be flexible and react dynamically to the type of synthetic fuel chosen by the owner.