H2-ICE Technology Options of the Present and the Near Future

At present, the hydrogen combustion engine has gained renewed interest from the heavy-duty internal combustion engine (ICE) industry as an enabler for fast decarbonization of well-to-wheel emissions and reinforced by the vast commitment of key stakeholders to establish a green hydrogen infrastructure. Past studies have often focused on partial...

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 ...

Coordinated Air-Fuel path control in a Diesel-E85 rcci engine

Reactivity Controlled Compression Ignition (RCCI) combines very high thermal efficiencies with ultra-low engine out NO x and PM emissions. Moreover, it enables the use of a wide range of fuels. As this pre-mixed combustion concept relies on controlled auto-ignition, closed-loop combustion control is essential to guarantee safe and stable...

Variable Valve Actuation Strategies for Better Efficiency Load Range and Thermal Management in an RCCI Engine

Experimental Demonstration of RCCI in Heavy-Duty Engines using Diesel and Natural Gas

Premixed combustion concepts like PCCI and RCCI have attracted much attention, since these concepts offer possibilities to reduce engine out emissions to a low level, while still achieving good efficiency. Most RCCI studies use a combination of a high-cetane fuel like diesel, and gasoline as low-cetane fuel. Limited results have been published...

Experimental study into a hybrid PCCI/CI concept for next-generation heavy-duty diesel engines

This paper presents the first results of an experimental study into a hybrid combustion concept for next-generation heavy-duty diesel engines. In this hybrid concept, at low load operating conditions, the engine is run in Pre-mixed Charge Compression Ignition (PCCI) mode, whereas at high load conventional CI combustion is applied. This study was...

Direct injection of high pressure gas: Scaling properties of pulsed turbulent jets

Existing gasoline DI injection equipment has been modified to generate single hole pulsed gas jets. Injection experiments have been performed at combinations of 3 different pressure ratios (2 of which supercritical) respectively 3 different hole geometries (i.e. length to diameter ratios). Injection was into a pressure chamber with optical...

Exhaust-gas aftertreatment under extreme conditions: Validation in a climatic-altitude chamber

By testing the vehicle under a wide range of conditions, the new climatic-altitude chamber at TNO will be essential in the various development stages for the integrated systems approach. The CA chamber allows to efficiently deal with the impact of system configuration and system integration on control performance early in the development process...