Experimental and numerical investigation on hydrogen internal combustion engine IFP Energies Nouvelles

Format:

Book

Conference/Event

Author/Creator:

Rouleau, Loic, author.

Contributor:

Duffour, Florence

Kumar, Rajesh

Nowak, Ludovic

Walter, Bruno

Conference Name:

15th International Conference on Engines & Vehicles (2021-09-12 : Capri, Italy)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2021

Summary:

Hydrogen may be used to feed a fuel cell or directly an internal combustion engine as an alternative to current fossil fuels. This latter option offers the advantages of hydrocarbon fuel engines autonomy, existing and proven technology, lifetime, controlled cost, existing industrial toolsand short time to market with a very low carbon footprint and high tolerance to low purity hydrogen. With the introduction of modern high-efficient spark ignited engines in the market, there is a particular interest to reconsider the application of hydrogen in engine development.This study aims to access the properties and limitations of hydrogen combustion on a high-efficiency spark ignited single cylinder engine with the support of the 3D-CFD computation.A high efficiency gasoline single cylinder engine was adapted to hydrogen combustion system with a low pressure direct injection and a platinum-free cold spark plug. The injection and camshaft phasing ranges were defined to limit the passage of hydrogen in the intake and exhaust manifolds. The experiments were performed on two operating points (2000rpm and 3000rpm at IMEP=10 bar) at various equivalent ratios, injection timings, camshaft phasing, compression ratios and aerodynamics levels. 3D-CFD computation was carried out on Converge to visualize and understand the local mixing in the combustion chamber.The study revealed that the highest indicated efficiency (close to 50%) coupled with low NOx and acceptable unburned H2 emissions (respectively below 0.5g/kWh and 1.5% input energy) was obtained at lean mixture, early H2 injection, compression ratio of 14, and high tumble level. The pre-ignition known as one of the highest challenges in hydrogen combustion is successfully limited by adjusting the injection timing and camshaft phasing. 3D-CFD simulations showed that these conditions favor the homogenization of the mixture and avoid the presence of rich zones generating hot spots and the pre-ignition

Notes:

Vendor supplied data

Publisher Number:

2021-24-0060

Access Restriction:

Restricted for use by site license