Calculation Method of Diesel Ignition Delay Using Its Momentary Value

Format:

Conference/Event

Author/Creator:

Gross, Leon, author.

Conference Name:

1979 SAE International Off-Highway and Powerplant Congress and Exposition (1979-09-10 : Milwaukee, Wisconsin, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1979

Summary:

The paper deals with a calculation method of ignition delay period ig.d. in diesel engines using its momentary values y. Starting from beginning of the injection in.b. and going along with the compression, or in backwards direction from combustion beginning c.b., we calculate the variable y for every equal small increment of crank angle Δ(1°CA or less). For the full ignition delay, the sum of the Δ/y reaches the value 1. Using simple computation we obtain calculated curves ig.d. = f(in.b.), inchesb. = f ( c.b.) et ceteraThe y' s are calculated from the empirical equation where py, Ty are the momentary pressure and temperature resp. and a,b,c are the constants. There are difficulties in determination of these constants as well as of the mean polytropic coefficient (during the ignition delay) needed for the calculations.Experimental data for comparisons with the calculated values are taken from a D.I. high speed laboratory diesel engine

Notes:

Vendor supplied data

Publisher Number:

790903

Access Restriction:

Restricted for use by site license