Методика расчета тягово-скоростных свойств и топливной экономичности автомобиля на стадии проектирования. Вохминов Д.Е - 20 стр.

UptoLike

20
Ijbf_j
Hij_^_eblv\_ebqbgm3
m
τ
me_]dh\h]hZ\lhfh[beyk[_gabgh\uf
^\b]Zl_e_f dhlhjuc ^\b`_lky kh kdhjhklvx  dfq gZ
\ukr_c i_j_^Zq_ \ DI :\lhfh[bev bf__l ke_^mxsb_
iZjZf_ljujZ[hqbch[t_f^\b]Zl_eykf
3
f
3
qbkeh
pbebg^jh\ ^\b]Zl_ey±i_j_^Zlhqgh_ qbkeh DI gZ \ukr_c
i_j_^Zq_±]eZ\gZy i_j_^ZqZ±
r
d
 f FmnlZ
hldexq_gby\_glbeylhjZbf__lky



j
h
P
=+=
IZ
P
jZ^
kIZ
E
=+=
;
Ih^klZ\eyy^Zggu_\\ujZ`_gb_ihemqZ_f
()
G







J
P
=
+++
=
τ
M>?EVGUCBG>BD:LHJGUCJ:KOH>LHIEB<:
Gh\uc iZjZf_lj
g
is
m^_evguc bg^bdZlhjguc jZkoh^ lhieb\Z±]G 
df bkihevam_lky \f_klh
g
e
 JZaebqb_ wlbo ihdZaZl_e_c ih kmlb hljZ`Z_lky
bg^_dkZfb
i
b
e –
bg^bdZlhjguc \f_klh wnn_dlb\gh]h Bg^_dk
s
ih imlb
h[hagZqZ_l baf_g_gb_ fZkrlZ[gh]h nZdlhjZ Wlh k\yaZgh k l_f qlh m
^\b]Zl_ebklh\ ijbgylh hij_^_eylv jZkoh^ lhieb\Z ih \j_f_gb]d<l
q Z \
^ZgghcjZ[hl_hghij_^_ey_lkyihimlb?kebij_h[jZah\Zlv]d<l
q\m^h[gmx
^ey jZkq_lh\ jZaf_jghklv ihemqbf ihdZaZl_ev]G
 df dhlhjuc
oZjZdl_jbam_l jZkoh^ lhieb\Z gZ ij_h^he_gb_ kbeu \G gZ imlb \  df
:\lhfh[bebklu \ jZkq_lZo h[uqgh bkihevamxl imlv jZ\guc  df ihwlhfm
ijb\_^_f wlhl gh\uciZjZf_lj d [he__ m^h[ghfm ^ey Z\lhfh[bebklh\ \b^m Z
bf_ggh \u[_j_f _^bgbpm baf_j_gbc \  jZa f_gvrmx]G
 df LZdbf
h[jZahf qbke_ggh_agZq_gb_
g
is
[m^_l hij_^_eylvaZljZlulhieb\ZgZ
ij_h^he_gb_kbeu\GgZimlb\df
FbgbfZevgu_ agZq_gby
g
is
ijb mkeh\bb qlh bg^bdZlhjguc di^
^\b]Zl_ey jZ\_g  hij_^_eyxlky ke_^mxsbf h[jZahf Ijb k]hjZgbb]
^ba_evgh]h lhieb\Z \u^_ey_lky  >` l_ieh\hc wg_j]bb Z] [_gabgZ±
 >` ?keb [u \ky wlZ wg_j]by [_ahklZldZ ij_\jZlbeZkv \ f_oZgbq_kdmx
jZ[hlm lh ^ey ij_h^he_gby kbeu \G gZ imlb  df g_h[oh^bfh [ueh [u
                                            20
      Ijbf_j Hij_^_eblv\_ebqbgm3mτme_]dh\h]hZ\lhfh[beyk[_gabgh\uf
              ^\b]Zl_e_f dhlhjuc ^\b`_lky kh kdhjhklvx  dfq gZ
              \ukr_c i_j_^Zq_ \ DI :\lhfh[bev bf__l ke_^mxsb_
              iZjZf_ljujZ[hqbch[t_f^\b]Zl_eykf3 f3 qbkeh
              pbebg^jh\ ^\b]Zl_ey ±  i_j_^Zlhqgh_ qbkeh DI gZ \ukr_c
              i_j_^Zq_ ±  ]eZ\gZy i_j_^ZqZ ±  rd   f FmnlZ
              hldexq_gby\_glbeylhjZbf__lky


                                       
                     j hP =  +          =  IZ
                                      
                                                    IZ ⋅ k 
                     E P =  +  ⋅  =           ;
                                                    jZ^ 

      Ih^klZ\eyy^Zggu_\\ujZ`_gb_  ihemqZ_f

                                           ⋅  ⋅    ⋅ 
                                                                   
    J Pτ =           +  + ( + )                                =  G
            ⋅                                  ⋅      
                    



      M>?EVGUCBG>BD:LHJGUCJ:KOH>LHIEB<:


      Gh\uc iZjZf_lj gis m^_evguc bg^bdZlhjguc jZkoh^ lhieb\Z ± ]G 
df  bkihevam_lky \f_klh ge JZaebqb_ wlbo ihdZaZl_e_c ih kmlb hljZ`Z_lky
bg^_dkZfb i b e – bg^bdZlhjguc \f_klh wnn_dlb\gh]h Bg^_dk s ih imlb
h[hagZqZ_l baf_g_gb_ fZkrlZ[gh]h nZdlhjZ Wlh k\yaZgh k l_f qlh m
^\b]Zl_ebklh\ ijbgylh hij_^_eylv jZkoh^ lhieb\Z ih \j_f_gb ]d` l_ieh\hc wg_j]bb Z  ] [_gabgZ ±
 >` ?keb [u \ky wlZ wg_j]by [_a hklZldZ ij_\jZlbeZkv \ f_oZgbq_kdmx
jZ[hlm lh ^ey ij_h^he_gby kbeu \  G gZ imlb  df g_h[oh^bfh [ueh [u