Decomposition Analysis of an Automotive Powertrain Design ...

23 Fnd Fnd - ( Wd M g - ∆Wd) (front wheel drive)
- ( Wd M g + ∆Wd) (rear wheel drive)
24 Fnnd Fnnd - ( Wnd M g + ∆Wd) (front wheel drive)
- ( Wnd M g - ∆Wd) (rear wheel drive)
4, 39, 34, 41
5, 40, 34, 41
25 Pbmep Pbmep - ( Pimep - Pfmep) 118, 109, 110
26 Pimep P imep - 3.479 x10 -2 ( pit / Tm )Q/R af) ηt . 109, 108, 105, 103, 122
27 Thm_eff η t - 0.9 ( 1 - c r (-0.33 - .01 Regr/30) )fc(φ)+ S v (N e /1500) 0.5 (4.137/P imep ) 0.2 122, 78, 102, 103, 123, 6, 109
28 Vol_eff η v - f(i vo , i ve ,e vo , e vc , i lift , e lift , n v , L mi , D mi , L me , D me , Z)
124, 83, 84, 85, 86, 87, 88, 106, 98, 99,
100, 101
29 Sv S v - ( 0.83 (12 s + (c r - 1)( 6 b + 4 s) ) / (b s (2 + c r )) 123, 78, 76, 77
30 Z-fact Z - ( 2 s Ne /(60 ao Cs nv) (b/di) 2 ) 106, 77, 6, 81, 95, 76, 79
31 Cs C s - ( C stiff C m C p (i vc - i vo )/180 (C m
2 + C p
2 - C m
2 C p
2 ) -0.5 ) 95, 89, 96, 97, 84, 83
32 Map pit - ( p i + ∆p t (Z, ηv) ( p i - 33.86)/(67.68) ) 108, 3, 107, 106, 124
33 Fmep_oil Pfoil - ( (4.6 - b 2 s π /4 n c x 10 -6 )/ 2.7 (Oil_ld - Oil_hd) + Oil_hd ) 115, 76, 77, 82, 6
34 Fmep_h2o Pfh2o - (H2O_lpd + (H2O_hpd - H2O_lpd)(P bmep (N pp ) N pp /895.2-54)/16) 116, 118, 72, 6
35 Fmep_pump Pfpu - ( p a - p it + 4.12 x 10 -9 (p it /pa) 2 (( N e s b 2 / (30 n v) ) 2 (d i
-4 + d e
-4 )
+ 0.178 x 10 -6 (p it / p a ) 2 (N e s / 30) 2 )
36 Fmep_mainbr Pfmb - ( 1.22 x 10 5 d bm /(b 2 s n c ) + 3.03 x 10 -4 Ne d bm
3 l bm n b /(b 2 s n c )
g
+ 1.35 x 10 -10 d bm
2 N e
2 n b / n c )
37 Fmep_pist Pfpr - ( 3.03 x 10 -4 N e d 3 br l br n br /(b 2 s n c ) + 2.94 x 10 -1 N e s / (30 b)
+ 4.06 x 10 4 (1 + 1000/ N e ) b -2
+ 6.89 p i /p a (0.088c r + 0.182 c r
(1.33 - 0.0238 Ne s /30000) ) )
111, 108, 6, 76, 77, 81, 79, 80,
113, 92, 6, 76, 77, 82, 93, 94
112, 6, 90, 91, 76, 77, 3, 78, 94
38 Fmep_vtrain Pfvt - ( 10 F spvt (vt_type, N e ) d i
2 / (b 2 s π /4 ) ) 114, 117, 6, 79, 76, 77
39 Fmep P fmep - ( Pfpu + Pfpr + Pfmb + Pfvt + Pfoil + Pfh2o ) 110, 111, 112, 113, 114, 115, 116
40 Fuel_flow
ṁ f - ( 3.479 x10 -6 pi/T m N e n c b 2 s π /(480 R af ) )
41 Air-fuel R af - f (p i , N e ) 103, 3, 6
120, 3, 105, 6, 82, 76, 77, 103