| 摘要 |
FIELD: engines and pumps. ^ SUBSTANCE: engine cooling circuit 81A forces cooling air blown by fan 85 into case 17 to engine cylinder block 35 and discharges it from said case via zigzag channels 86, 87, 88. Case cooling structure 82 directs cooling air along case inner surface. Additional channel 135 directs air to vertical heat-emitting radiator fins 58 and along them and upward to air to be discharged via discharge opening 89. Fan metal case 391 is supported by lower guard 25 with help of mounts 33, while case guide 392 is made from plastic and attached between fan case and engine together with bearing feet 406-408. ^ EFFECT: higher efficiency of cooling, reduced weight. ^ 6 cl, 20 dwg |
