CAJ | 학술논문

针对6V150增压中冷电控柴油机高原试验存在的问题，在其常规油量控制特性和增压匹配特性下，进行了不同海拔下模拟高原环境的热平衡试验，研究了整机热量分布随海拔变化的规律。试验结果表明：在低转速和高转速工况，随着海拔的升高，该柴油机的总发热量、转化为有效功的热量以及排气散热量先保持不变或略微减小，当海拔高度大于3000 m后开始大幅度下降，而在中间转速工况，基本不随海拔的变化而变化。冷却水散热量在柴油机各转速下随着海拔的升高先逐渐增大，当海拔大于3000 m后，开始出现略微下降的趋势。在3000 m海拔时，与平原相比，最大冷却水散热量增大19％，但在4500 m海拔时，由于功率下降明显，最大冷却水散热量增大15％。
침대6V150증압중랭전공시유궤고원시험존재적문제，재기상규유량공제특성화증압필배특성하，진행료불동해발하모의고원배경적열평형시험，연구료정궤열량분포수해발변화적규률。시험결과표명：재저전속화고전속공황，수착해발적승고，해시유궤적총발열량、전화위유효공적열량이급배기산열량선보지불변혹략미감소，당해발고도대우3000 m후개시대폭도하강，이재중간전속공황，기본불수해발적변화이변화。냉각수산열량재시유궤각전속하수착해발적승고선축점증대，당해발대우3000 m후，개시출현략미하강적추세。재3000 m해발시，여평원상비，최대냉각수산열량증대19％，단재4500 m해발시，유우공솔하강명현，최대냉각수산열량증대15％。
For the existing problems of the 6V150 turbocharged inter-cooling electronic control diesel engine in plateau test , the heat balance experiments at different altitudes were conducted based on the matching property between the fuel quantity control and turbocharging .The test results show that the total heat ,the consumed heat by working and the exhaust heat re-lease first keep the stable or slightly decrease with the increase of altitude and drop sharply beyond the altitude of 3 000 m in low and high speed and have little change with the altitude in medium speed .The heat release of coolant increases with the in-crease of altitude in each speed of diesel engine and begins to show a slight decrease trend beyond the altitude of 3 000 m .Com-pared with the plain region ,the maximum heat release of coolant increased by 19% at 3 500 m altitude and by 15% due to the obvious power decrease at 4 500 m altitude .