Validation scheme for the Green Deal for Shipping, Inland Shipping and Ports (C-230) - Validation of alternative fuels, hydrogen in a combustion engine

Met de op 19 juli 2019 gepubliceerde Green Deal Zeevaart, Binnenvaart en Havens (C-230) is invulling gegeven aan de belofte in het Regeerakkoord van het Kabinet Rutte III om de verduurzaming van de zeevaart en de binnenvaart een impuls te geven. Als onderdeel binnen deze Green Deal is er vanuit de Rijksoverheid financiering beschikbaar gesteld ...

The interaction between the pilot diesel and main NG injection in an HPDI engine

High Pressure Direct Injection (HPDI) is a promising combustion concept for the medium- to heavy-duty industry to combat climate change. It uses a pilot diesel injection to ignite the main fuel consisting of Natural Gas (NG). Both fuels are injected directly in the combustion chamber using a dedicated HPDI injector. A significant reduction in...

An OBD strategy to estimate SCR ageing and detect urea injection faults

The most recent regulation for diesel engines with regards to NOx emissions and SCR systems considers stringent OBD requirements. In this paper, an observer of the ageing state is developed considering NO, NO2 and NH3 concentrations, the surface coverage ratio θNH3, and the ammonia storage capacity Ω as states. The observer is based on an...

Experimental validation of a dynamic waste heat recovery system model for control purposes

This paper presents the identification and validation of a dynamic Waste Heat Recovery (WHR) system model. Driven by upcoming CO2 emission targets and increasing fuel costs, engine exhaust gas heat utilization has recently attracted much attention to improve fuel efficiency, especially for heavy-duty automotive applications. In this study, we...

Gas density and rail pressure effects on diesel spray growth from a heavy-duty common rail injector

Formation of nonevaporating sprays from diesel fuel injection through a realistic heavy duty multihole common rail injector is studied in a newly developed high-pressure, high-temperature cell, using digital highspeed shadowgraphy at 4500 frames/s. Gas pressure was varied from 13 to 37 bar (corresponding to densities of 15-42 kg/m3, using N2 at...

Experimental validation of extended NO and soot model for advanced HD diesel engine combustion

A computationally efficient engine model is developed based on an extended NO emission model and state-of-the-art soot model. The model predicts exhaust NO and soot emission for both conventional and advanced, high-EGR (up to 50%), heavy-duty DI diesel combustion. Modeling activities have aimed at limiting the computational effort while...