摘要
对甘肃省小型拖位机的残值Ｋｔ、有效功率Ｎｅ、耗油率ｇｅ、维修费Ｆｗ进行连续多年抽样调查统计，建立回归方程，求出小型拖拉机的寿命周期费用ＱＴ。采用逐年计算法求出小型拖拉机不同寿命周期的年均费用ＱＴ，由ＱＴｍｉｎ得出甘肃省小型拖拉机的经济寿命为６年。实际上小型拖拉机的更新期是围绕该经济寿命波动。
The utilizing parameters of small tractors in Gansu Provinces, such as the available power, remain, fuel consumption rate and the maintenance cost are surveyed and statistically analyzed for several years. The regression formula was established and the lifespan cost of the small tractors can be obtained with this formula. The average cost of different lifespan of the small tractors were calculated step by step of years, and a conclusion of that the economical usage lifespan is about 6 years was given. In practice, the renew period of the small tractors were varying about the economical lifespan.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
1998年第2期78-81,共4页
Transactions of the Chinese Society of Agricultural Engineering
关键词
拖拉机
经济寿命
更新时机
小型拖拉机
small tractor, economic life, renewal opportunity, dynamic analysis
