Crank-Angle Resolved Temperature in SI Engines Measured by Emission-Absorption Spectroscopy Fraunhofer EMI

Format:

Conference/Event

Author/Creator:

Aust, Volker, author.

Conference Name:

International Fuels and Lubricants Meeting and Exposition (1999-10-25 : Toronto, Canada)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1999

Summary:

Crank-angle resolved, gas temperatures are determined in the combustion chamber of a Volkswagen (VW) standard-production, port-injected SI engine. During idle, two different methods are applied: (1) a direct spectroscopic emission-absorption technique at a resonance line of potassium, seeded to the air stream to generate sufficient spectral absorptance (colouring' technique), and (2) a more standard, indirect method in which temperatures are derived from pressure recordings using a two-zone thermodynamic model. Combustion temperatures obtained during idle with both the spectroscopic (1) and two-zone' (2) methods are in good agreement. In addition, the spectroscopic technique is extended to transient operating conditions where the two-zone' method is not applicable. Combustion temperatures measured during cold-start and abrupt load alteration are in good agreement with former investigations

Notes:

Vendor supplied data

Publisher Number:

1999-01-3542

Access Restriction:

Restricted for use by site license