Evaluating Threshold Knock with a Semi-Empirical ModelInitial Results

Format:

Conference/Event

Author/Creator:

Najt, P. M., author.

Conference Name:

1987 SAE International Fall Fuels and Lubricants Meeting and Exhibition (1987-11-02 : Toronto, Canada)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1987

Summary:

In an effort to help explain knock performance in a variety of engines, a semi-empirical knock model has been developed. Making use of a "lumped-parameter" autoignition model and simple cylinder-pressure-driven thermodynamics, the model mimics the knock results obtained in an engine with a central-ignition chamber remarkably well. While additional testing against other engines is necessary to determine the generality of the model, it has already proven useful in explaining experimentally observed trends. The current work indicates that while heavy knock may occur at temperatures above 1000 K, independent of "cool-flame" chemistry, threshold knock is a 700-950 K phenomenon which can be influenced by "cool-flame" chemical activity

Notes:

Vendor supplied data

Publisher Number:

872149

Access Restriction:

Restricted for use by site license