TRACTOR RELIABILITY ANALYSIS NEW HOLLAND T9 DURING THE WARRANTY PERIOD

Abstract

The Average lifelength of refusal 558 moto-hrs, 510 thousand. dollar, 30 hrs; Average sguarelaw deflection; 284 moto-hrs, 535 thousand. dollar, 14,8 hrs; The variation of the factor is 0,55; 1,1; 0,61. The Factor of New Holland T9 tractor reliability at period of the usage changes under Veybills law of distribution. The borders of the diffusing of the average lifelength on refusal are tн α = 474 moto-hrs; tв α =686 moto-hrs. The Relative limiting is δ =25%. The Parameter of the flow refusal is (ω) 0,0018 refusal/ moto-hrs, 0,033 hrs / moto-hrs, 0,002 tg/ moto-hrs. The work time law distribution of the tractor non-stop formula of the tractor New Holland T9 work are expressed by formula: P(t)= exp[-(t/580)1,88 ], f(t)= 0,0032*(t/580) 0,88 * exp[-(t/580) 1,88 ].