Vol.4, No 1, 2006pp. 17 - 26
UDC 621.437:629.4.082.2
REGRESSION MODELS OF SPECIFIC FUEL CONSUMPTION
CURVES AND
CHARACTERISTICS OF ECONOMIC OPERATION OF INTERNAL COMBUSTION ENGINES
Radan Durković, Milanko Damjanović
Faculty of Mechanical Engineering, Podgorica, Montenegro
E-mail: radan@cg.ac.yu
Abstract. The present study deals with the procedure of establishment
of regression models of closed curves for specific fuel consumption constant
values, as well as of curves for the minimum specific fuel consumption
in internal combustion engines, which is illustrated on a concrete example.
Characteristics and development trends of automatic transmissions which
provide the operation of an engine under all exploitation regimes on a
minimum fuel consumption curve, i.e. on the characteristic of an economic
engine operation, are shown in order to illustrate how actual these issues
are nowadays. Regression models are presented in the form of a polynomial
in the function of working regime parameters - effective pressure and number
of revolutions. A graphical representation of specific fuel consumption
constant value curves is given for a concrete example used in this research
study, in the form of a relief topographic characteristic.
Key Words: Regression Model, Internal Combustion Engine, Specific
Fuel Consumption, Economic Operation Characteristic, Automatic Transmission.
REGRESIONI MODELI KRIVIH SPECIFIČNE POTROŠNJE
GORIVA I
KARAKTERISTIKE EKONOMIČNOG RADA MOTORA SUS
U radu je prikazan, i na konkretnom primjeru ilustrovan, postupak formiranja
regresionih modela zatvorenih krivih konstantnih vrijednosti specifične
potrošnje goriva i krive minimalne specifične potrošnje goriva. Aktuelnost
problematike je ilustrovana prikazom karakteristika i trendova razvoja
automatskih transmisija kojima se obezbijeđuje rad motora u svim režimima
eksploatacije na krivoj minimalne specifične potrošnje goriva- tj. na karakteristici
ekonomičnog rada motora. Regresioni modeli dati su u obliku polinoma, u
funkciji parametara režima rada - efektivnog pritiska i broja obrta. Za
konkretni primjer data je i grafička interpretacija krivih konstantnih
vrijednosti specifične potrošnje goriva u obliku reljefne topografske karakteristike.
Ključne reči: regresioni model, motor SUS, specifična potrošnja
goriva, karakteristika ekonomičnog rada, automatska transmisija
