Transient Heating and Emissions of an SI Engine During the Warm-up Period Department of Fuel and Energy, The University of Leeds, Leeds. UK

Format:

Conference/Event

Author/Creator:

Andrews, G.E., author.

Conference Name:

SAE International Congress & Exposition (1988-02-29 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1988

Summary:

The test procedures used to investigate the transient warm-up of two Ford 40 kW SI engines are described. Water, engine casing and lubricating oil temperatures were monitored and the rates of temperature rise determined as a function of engine speed and power. The temperature results showed that for both engines the lubricating oil was the slowest component in the warm-up and may be the limiting factor in engine warm-up. A particular emphasis has been placed on monitoring the gas composition during the warm-up. A special feature of this system is the use of two UHC FID analysers operating at 180°C and 2°C. The difference in the two UHC readings is a measure of the high molecular weight condensible UHC or unburnt liquid fuel that is emitted. It is shown that this is quite significant during the initial period of warm-up. NOx emissions showed a strong increase during the warm-up and this indicated that the combustion process took an appreciable time to achieve its maximum flame temperature

Notes:

Vendor supplied data

Publisher Number:

880264

Access Restriction:

Restricted for use by site license