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이 논문의 연구 히스토리 (2)

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An Intake Port of SI engines plays a key role on improving engine performance by maximizing full load volumetric efficiency or by optimizing in-cylinder air motion. However, designing an intake port has been usually performed based on port experts' experience and know-how, which means that analytical analyses are relatively insufficient. In this paper, port design parameters which decide an overall port shape were defined in order to correlate them relevantly with flow test results accumulated so far. This was expected to be one of the analytical approaches for future port development.
Test species were composed of all twenty eight SI engines which cover major engine displacements from 1,000cc to 4,000cc. First, they were tested on a steady state flow test rig to find out their flow coefficients. Secondly, those flow coefficients were analyzed based on the port design parameters measured form the engines. The port design parameters were chosen to be measured easily in the real cylinder head, and then re-arranged to be non-dimensional
parameters for further correlation analyses. The most effective parameters are valve height, valve head diameter, and the ratio of port size and cylinder bore diameter. The final correlation equation could predict flow coefficients within 2% deviation.

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ABSTRACT

1.서론

2.흡기포트의 설계인자

3.Cf 측정

4.Cf와 포트설계인자의 상관성 분석

5.Cf 개발 목표 설정

6.결론

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UCI(KEPA) : I410-ECN-0101-2009-556-014023821