Performance of Thin-Ceramic-Coated Combustion Chamber with Gasoline and Methanol as Fuels in a Two-Stroke SI Engine Indian Institute of Technology

Format:

Conference/Event

Author/Creator:

Poola, Ramesh B., author.

Conference Name:

International Fuels and Lubricants Meeting and Exposition (1994-10-17 : Baltimore, Maryland, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1994

Summary:

The performance of a conventional, carbureted, two-stroke spark-ignition (SI) engine can be improved by providing moderate thermal insulation in the combustion chamber. This will help to improve the vaporization characteristics in particular at part load and medium loads with gasoline fuel and high-latent-heat fuels such as methanol. In the present investigation, the combustion chamber surface was coated with a 0.5-mm thickness of partially stabilized zirconia, and experiments were carried out in a single-cylinder, two-stroke SI engine with gasoline and methanol as fuels. Test results indicate that with gasoline as a fuel, the thin ceramic-coated combustion chamber improves the part load to medium load operation considerably, but it affects the performance at higher speeds and at higher loads to the extent of knock and loss of brake power by about 18%. However, with methanol as a fuel, the performance is better under most of the operating range and free from knock. Carbon monoxide (CO) emissions are significantly reduced, by about 3 to 4% volume, for both gasoline and methanol fuels due to relatively lean operation and more complete combustion. NOx emissions were not measured. The results show that moderate thermal insulation of the two-stroke SI engine's combustion chamber is better suited to methanol fuel with respect to thermal efficiency, CO emissions, and knock-free operation compared to gasoline fuel

Notes:

Vendor supplied data

Publisher Number:

941911

Access Restriction:

Restricted for use by site license