1. Diethyl ether as an ignition improver for biogas homogeneous charge compression ignition (HCCI) operation - An experimental investigation
- Author
-
K. Sudheesh and J M Mallikarjuna
- Subjects
Diethyl ether ,Primary fuels ,Analytical chemistry ,Biogas ,alternative fuel ,Combustion ,Industrial and Manufacturing Engineering ,Automotive engineering ,law.invention ,diesel ,chemistry.chemical_compound ,law ,Brake thermal efficiency ,HCCI ,Carbon monoxide ,Diethyl ethers ,emission inventory ,Ignition ,Pollution ,ether ,Volumetric flow rate ,General Energy ,Smoke Emission ,Load condition ,Experimental investigations ,Ethers ,Dual-fuels ,Thermal efficiency ,Materials science ,Homogeneous charge compression ignition operations ,Fuels ,Single-cylinder engines ,experimental study ,nitric oxide ,Organic compounds ,Electrical and Electronic Engineering ,Spark ignition ,Civil and Structural Engineering ,engine ,Mechanical Engineering ,Homogeneous charge compression ignition ,Building and Construction ,Homogeneous charge compression ignition engines ,Ignition system ,smoke ,chemistry ,Volume (thermodynamics) ,Operating loads ,Brakes ,Engine cylinders ,combustion - Abstract
This paper deals with experimental investigations of a homogeneous charge compression ignition (HCCI) engine using biogas as a primary fuel and diethyl ether (DEE) as an ignition improver. The biogas is inducted and DEE is injected into a single-cylinder engine. For each load condition, best brake thermal efficiency DEE flow rate is determined. The results obtained in this study are also compared with those of the available biogas-diesel dual-fuel and biogas spark ignition (SI) modes. From the results, it is found that biogas-DEE HCCI mode shows wider operating load range and higher brake thermal efficiency (BTE) at all loads as compared to those of biogas-diesel dual-fuel and biogas SI modes. In HCCI mode, at 4.52. bar BMEP, as compared to dual-fuel and SI modes, BTE shows an improvement of about 3.48 and 9.21% respectively. Also, nitric oxide (NO) and smoke emissions are extremely low, and carbon monoxide (CO) emission is below 0.4% by volume at best brake thermal efficiency points. Also, in general, in HCCI mode, hydrocarbon (HC) emissions are lower than that of biogas SI mode. Therefore, it is beneficial to use biogas-DEE HCCI mode while using biogas in internal combustion engines. � 2010 Elsevier Ltd.
- Published
- 2010