
第36卷(2014)第6期结构与可靠性
柴油机 Diesel Engine
Vel. 36(2014) No. 6
四冲程大功率内燃机气阀间隙设定研究
黄家田",马志强",何才田”,刘德建”
(1.海军青岛地区装备修理监修室,山东青岛266001;2.上海高斯通船舶配件有限公司,上海201201;
3.中船动力有限公司,江苏镇江212002)
摘要:针对影响气阔间隙设定的因素众多,长期以来以经验方式设定,而没有一套科学的气间间隙设定方法的问题,通过对内燃机进、排气机构使用情况的长期跟踪,并结合对各种燃料内燃机燃烧特性及气阀缸盖等的材料高温膨胀特性的研究,提出了一种四冲程大功率内燃机气阀间隙设定方法气阀间隙热态确定法。实际应用表明:通过该方法设定的气阀间隙运行状态理想,
从而可延长气阀使用寿命和保证内燃机正常运转。关键词:内燃机;气阀:间康;设定
中图分类号:TK423.4*3
文献标识码:A
文章编号:1001-4357(2014)06-002002
AirValveClearanceSettingofFourStroke LargePower Internal CombustionEngine Huang Jiatian',Ma Zhiqiang',He Caitian',Liu Dejian
(1. Navy Equipment Repair Superintend Office for Qingdao District, Shandong Qingdao 266001;
2. Shanghai Golston Shipping Fittings Co.,Ltd.; Shanghai 201201; 3.CSSC Marine Power Co.,Lad.,JiangsuZhengjiang 212002)
Abstract: The setting of air valve clearance is influenced by many factors, and has been for a long time determined based on experience, but lack of any scientific methods. Through long-term follow-up on the application conditions ofICEs' inlet and outlet mechanism,and based on the combustion characteristics of ICEs using different fuels, as well as the high-temperature expansion characteristics of parts such as air valves and cylinder heads, a method for the air valve clearance setting of four stroke large power ICEs is put forward, which named air valve clearance hot determination method. Application results show that the air valve clearance determined using this method are rational and could prolong the service life of the air
valve, and ensure the stable running of ICEs. Keywords: ICE; air valve; clearance; setting
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引言
随着内燃机性能不断提高,低价重油及各种可
燃气体的开发应用,气阀质量和气阀间隙设定的要求也随之提高。气阀间隙设定不合理直接影响内燃机各项性能和气阀的使用寿命。在对气阀使用质的长期跟踪中,发现气阀间过大对于气阀使用寿
命影响很大,同时也影响内燃机各项性能和正常运行。
目前,绝大部分内燃机制造企业对气阔间隙的设定都是采取经验方式,而没有结合内燃机排气温度及所用气阀、缸盖材料的膨胀特性,用科学的方法进行有效的间隐计算,所以对气阀在高温下运行时的实际间隙情况不甚了解。
收稿日期:2014-05-15;修回日期:2014-08-12
作者介:黄家田(1968-),男,高级工程师,主要研究方向为轮机工程。