Measuring and testing – Test stand – For engine
Reexamination Certificate
2006-03-28
2006-03-28
McCall, Eric S. (Department: 2855)
Measuring and testing
Test stand
For engine
Reexamination Certificate
active
07017399
ABSTRACT:
In a computer system for analyzing the flow of an intake/exhaust gas of, for example, a four-cycle multi-cylinder engine through application of CFD, the dimension of a space where the flow of the intake/exhaust gas is analyzed can be selected with respect to each of four processes, that is, intake, compression, expansion and exhaust processes, of each cylinder (in selecting step S1), and a physical model for simulating the flow of the intake/exhaust gas from a part of an intake system to a part of an exhaust system of the engine in the dimension selected with respect to each of the four processes is set (in model setting steps S2, S31, S41and S51). The flow of the intake/exhaust gas is subjected to a CFD operation using the physical model, and chemical reactions caused in combustion is simulated (in operating steps S33, S43and S53), so as to output an output about engine performance on the basis of the results of these simulation operations. Thus, while keeping sufficiently high accuracy in the analysis, time required for the CFD operation can be reduced as much as possible, resulting in improving the utility as a design/development tool.
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Ueki Yoshiharu
Yokohata Hideaki
Mazda Motor Corporation
McCall Eric S.
Nixon & Peabody LLP
Studebaker Donald R.
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