Some values of the compression index obtained by digital-computer integration of the first law of thermodynamics, with allowance for variable gas properties and for heat transfer between charge and walls, are first presented and discussed. These show the effects of some of the common fuel gases, and the changes produced by variations of engine geometry and running conditions. An approximate calculation method suitable for manual computation is also described.
Get full access to this article
View all access options for this article.
References
1.
GeyerE. W.BrugesE. A.Tables of properties of gases1948 (Longmans, Green and Co., London).
2.
AnnandW. J. D.‘Heat transfer in the cylinders of reciprocating internal combustion engines’, Proc. Instn mech. Engrs1963177, 973.
3.
SchwarzH.‘Gaslässigkeitsverluste bei Kraftfahrzeugmotoren’, A.T.Z.194043, 560.
4.
BryantW. M. D.‘Empirical molecular heat equations from spectroscopic data’, Ind. Engng Chem.193325, 820.
5.
SpencerH. M.‘Empirical heat capacity equations of various gases’, J. Am. Chem. Soc.194567, 1859.
6.
HilsenrathJ.‘Tables of thermal properties of gases’, Circ. U.S. Bureau Standards1955 (No. 564).
7.
BromleyL. A.WilkesC. R.‘Viscosity behaviour of gases’, Ind. Engng Chem.195143, 1641.
8.
KatzD. L.Handbook of natural gas engineering1959 (McGraw-Hill, New York).
