GB/T3821-2015表2标定转速nt/八r/min)K:标定转速n/(r/min)K:6001.3200030001.060010001.230000.9100020001.1表3标定功率P/kWG/mg标定功率PkWG/mg50(二冲程)14.729.4400aP3.6880(四冲程)29.473.503.687.3515073.55000.5aP7,3514.72003.1,2内燃机整机解体清洁度按式(2)计算:W=4.66SD(2)式中:W一内燃机清洁度限值,单位为毫克(mg):;一气缸数:S一内燃机活塞行程,单位为厘米(cm);D一内燃机气缸直径,单位为厘米(cm),3.2总成清洁度3.2.1化油器总成化油器总成清洁度以每只杂质量W,(mg)表示,限值按式(3)计算:Wn=a+KV+G式中:a一经验常数,10mg;K一体积修正系数,单位为毫克每立方厘米(mg/cm3),数值见表4:V一化油器体积,单位为立方厘米(m3),容积法测量:G一补偿量,单位为毫克(mg),数值见表5。表4化油器体积/cm3K/(mg/cm)500.00500.05