GANE Fuel Introduction of an innovative, carbon-neutral and low emission fuel for HD CI engines IAV GmbH

Format:

Book

Conference/Event

Author/Creator:

Rezaei, Reza, author.

Contributor:

Delebinski, Thaddaeus

Dembler, Joseph

Gottschalk, Wolfram

Kovacs, David

Morris, Greg

Conference Name:

SAE Powertrains, Fuels & Lubricants Digital Summit (2021-09-28 : Live Online, Pennsylvania, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2021

Summary:

The newest legislative trends enforce a significant decrease in CO2 emissions for commercial vehicles. For instance, in Europe a drop in fleet consumption of 15% and 30% is set as target by the regulation until 2025 and 2030, respectively. Besides the efficiency increase of diesel engines and reduction of losses of the vehicle (aerodynamics, rolling resistance et cetera), the use of carbon-neutral fuels offers further potentials (however, not yet considered by the rules). In addition, also a drastic tightening of the NOx emissions are discussed (EURO VII) or even already approved (CARB HD Low NOx Regulation). Furthermore, the introduction of low load certification cycles and extension of RDE testing bring further challenges to fulfill the emission limits.The current work describes the potentials of an innovative fuel, marketed as GANE regarding performance, efficiency and emission behavior. First, the properties of the developed fuel is described: GANE is made from methanol blended with water and is tailored for diffusive combustion. The fuel blending is so defined to fulfill the combustion requirements. With DME the ignition can be initiated and adding water can reduce the combustion temperature to minimize the NOx. The innovative fuel system fumigates the DME into the inlet air and is combined with HPDI injection of the Methanol-Water blend.As baseline for the experimental investigations, a conventional in-line 6-cylinder HD diesel engine was selected and the fuel system modified. During the extensive engine testing, the complete engine map was calibrated for the GANE fuel without significant drawbacks regarding power density compared to the diesel baseline. The experimental results show that using GANE fuel leads to comparable high brake thermal efficiencies as in case of diesel fuel even though the engine-out NOx emission level have been reduced to under circa 2 g/kWh compared to the diesel baseline with circa 7 to 10 g/kWh. In addition, very low soot emissions occur, which makes the tested fuel possibly compliant to EURO VI without PDF.In order to assess the ignition process of the GANE fuel, the intake temperatures and also the mass flow rate of the port-injected DME were varied and the combustion processes compared. As expected, the lower the intake temperatures or the DME mass flow, the higher is the ignition delay. In order to estimate the effect on the ignition process in a predictive way, a simulation model based on in-cylinder kinetic reaction mechanisms have been developed and validated. Then, the engine model was coupled with an EAT model allowing the investigations with a holistic approach for future regulations

Notes:

Vendor supplied data

Publisher Number:

2021-01-1198

Access Restriction:

Restricted for use by site license