Application of Interval Interpolation for the Description of Compression-Ignition Engine Performance Characteristics
Journal Title: Archives of Transport - Year 2010, Vol 22, Issue 3
Abstract
In this paper is presented a calculation method based on Lagrange’s interpolation formula which has been used for mathematical description of the performance characteristics of a compression-ignition engine of the 359 type of the Polish production. Its application allows simplification of experimental tests through preservation of a minimum number of measuring points and estimation of other data analytically. In order to minimise the interpolation error occurring with polynomials of high degrees and constant node distances, the characteristics were approximated by spline functions with both solutions being shown comparatively in the graphical form. As calculation examples, the curves of specific fuel consumption and infrared radiation absorption coefficient were chosen, which had been obtained during examinations on engine test bench for a drive unit fuelled with four types of fuel. In addition, results of the experiment required for their determination were tabulated. The presented method may be used in further tests of a given engine as well as on other experimental benches, aiding long-lasting and expensive optimisation of operating parameters when using fuels of plant origin. Description of any performance characteristics by means of interval interpolation is convenient from the practical side and does not cause greater calculation problems since polynomials of low degrees are being used in the procedure.
Authors and Affiliations
Tomasz Stoeck, Konrad Prajwowski
Keywords
Related Articles
- EP ID EP70211
- DOI 10.2478/v10174-010-0021-2
- Views 143
- Downloads 0
Remarks about Real Driving Emissions tests for passenger cars
New test procedures for determining exhaust emission from passenger vehicles will be introduced in 2017. For several years, the European Commission has been developing new procedures, which aim is to perform tests in roa...
MODELS OF TRAFFIC FLOW DISTRIBUTION FOR VARIOUS SCENARIOS OF THE DEVELOPMENT OF PROECOLOGICAL TRANSPORT SYSTEM
The paper is a result of a research work concerning the development of an environmentally friendly transport system - Project EMITRANSYS. The publication contains the issues of shaping the transport system, where importa...
Application of Global Navigation Satellite System and Hydroacoustic Techniques to Safety of Inland Water Navigation
The paper presents description of application of integrated, Global Navigation Satellite System (GNSS) and hydroacoustic technologies, for elaboration of actual bathymetric chart and creation of an Inland Interactive Und...
Analysis of residents' travel characteristics along Beijing rail transit line based on binary choice model
From ancient to modern times, in the historical process of urban development, urban transportation has been developing along with the development of the city's political, economic and cultural industries, and the relatio...
The complex phenomenological model for prediction of inhomogeneous deformations of railway ballast layer after tamping works
The given article considers the method of calculating the track geometry deformation with respect to uneven accumulation of residual deformations along the track. The technique proposes two significant changes in existin...