1981-02-01

A Generalized Computer Aided Design Package for I. C. Engine Manifold System 810498

A numerical scheme for a Computer Aided Design (CAD) package for the design and development of internal combustion engine intake and exhaust manifold is presented. The program is interactive and uses the graphical and visual display unit (VDU) facilities extensively. The basic concept of such a program was described in a previous SAE paper (Paper No. 790277) by one of the authors (SCL). The present program is written to handle a maximum of 10 cylinders and any imaginable configuration of intake and exhaust manifold. The input data, the preparation of which is usually a time-consuming process, are kept at a possible minimum with automatic generation of data from arbitrary drawings drawn manually on the VDU screen. The program is applied to a commercial 4 cylinder - 4 stroke spark ignition engine.

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