Heat Insulation of Combustion Chamber Walls A Measure to Decrease the Fuel Consumption of I.C. Engines? Technische Universität München

Format:

Conference/Event

Author/Creator:

Woschni, Gerhard, author.

Conference Name:

SAE International Congress & Exposition (1987-02-23 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1987

Summary:

Experimental investigations were made with a single-cylinder direct-injection Diesel engine with heat-insulated piston. The most important result is an inferior economy compared with the not insulated aluminum-piston engine. It was found that this phenomenon is not caused by neither a changed combustion process nor increased blowby nor different friction losses, but rather by a drastic increase of the heat transfer coefficient during the first part of combustion with increasing surface temperature. This is taken into account in a modified equation for the heat transfer coefficient. Cycle-simulations using this modified equation show that there is neither a gain in fuel economy of naturally aspirated nor of turbocharged nor of turbocompound Diesel engines with "heat insulated" combustion chamber walls

Notes:

Vendor supplied data

Publisher Number:

870339

Access Restriction:

Restricted for use by site license