Journal of Advanced Marine Engineering and Technology
- Volume 7 Issue 1
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- Pages.34-39
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- 1983
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- 2234-7925(pISSN)
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- 2234-8352(eISSN)
A Study on the Precision Engine Indicatior(I) (Zero-shift Compensation of the Engine Indicator with a Electronic Device)
고정도 엔진 지압계에 관한 연구 (1) <온도 특성에 의한 영점이동의 보상>
Abstract
Development of modern internal combustion engine requires more precise indicator. In the case of strain gage-strain tube type indicator, thermal expansion of the indicator's fixed part makes zero-shift in spite of water cooling. Therefore, the authors analyzed the cause of zero-shift phenomenon on strain gage-strain tube type indicator and proposed a new device to compensate the zero-shift of indicator by electrical method without detoriorating the dynamic charcteristic. As the results, we found that the zero-shift is varied linearlly according to temperature variation of the indicator's fixed part and appling a new device, we can improve the zero-shift of indicator about 0.63% (0.63 kg/
Keywords