AN UNREPEATABILITY OF MEAN INDICATED PRESSURE IN THE MULTICYLINDER BIOGAS ENGINE

Karol Cupiał
Grzegorz Katolik

Czestochowa University of Technology
Institute of Internal Combustion Engines and Control Engineering
al. Armii Krajowej 2, 42-200 Częstochowa
tel.: +48 34 3250507
fax: +48 34 3250555
e-mail: cupial@imc.pcz.czest.pl
e-mail: katolik@imc.pcz.czest.pl

Abstract

Un repeatability of consecutive work cycles in individual cylinders of turbocharged biogas engine was calculated on a basis of results of simultaneous engine indication. Numerical analysis of cycles shows that distribution of values of elementary indicated work in individual cylinders can be approximated by taking advantage of normal distribution, while one common data set of values of elementary indicated work does not satisfy a condition of λ-Kolmogorov test and cannot be approximated using normal distribution.