Diethyl ether as an ignition improver for biogas homogeneous charge compression ignition (HCCI) operation - An experimental investigation

Comparison of the predominantly premixed charge compression ignition and the dual fuel modes of operation with biogas and diesel as fuels

“…DEE (diethyl ether) has been used as an ignition enhancer with biogas for operation in the HCCI mode. In this case combustion was attainable without intake heating [28]. When diesel was introduced into the intake manifold along with biogas for HCCI operation the ICT needed was in the range 80e135 C. The maximum amount of energy that could be derived from biogas was about 70% and the maximum BMEP was 4 bar.…”

Impact of Biodiesel Blends and Di-Ethyl-Ether on the Cold Starting Performance of a Compression Ignition Engine

“…The low viscosity (0.23 mm 2 /s), auto-ignition (160˝C) and boiling temperature (34.6˝C), high CN (>125) and volatility of DEE are the reasons for selecting it as an ignition improver in diesel engines [28][29][30]. Since DEE is extremely flammable (e.g., in dry air, even in a flame-free environment, explosive peroxides may be formed), for this particular case consisting of performing a cold starting test with DEE injection, the glow plugs were disabled in order to avoid violent and destructive combustion inside the cylinders.…”

Performance and emissions of a dual-fuel pilot diesel ignition engine operating on various premixed fuels

“…However, this technology still suffers from the inability to control auto-ignition which is the major obstacle for the implementation of HCCI combustion in practical engines [3][4][5]. In order to address this issue, many research efforts and development endeavors have been focused on dualfuel pilot diesel ignition engine concept, where the premixed fuel is ignited by a small amount of diesel fuel [6,7].…”