外文翻譯---發(fā)動機(jī)活塞連桿組—活塞詳解-其他專業(yè)(存儲版)
【正文】 into the top smaller the bottom the big stairs form in advance, taper. (3) In order to reduce the calories of the piston skirt department ,we usually open the hot slot horizontally in the skirt department. In order to pensa the skirt department after be subjected to the heat of transform the quantity, the skirt department opens lengthways of inflation slot. The shape of the slot contain T form or Π form slots. The horizontal slot opens generally under most the underneath of a wreath slot, both the edge pin sides ( also opened in the oil wreath slot) of on the skirt department so as to reduce the head calories delivered toward the skirt department, so it is called separating the hot slot. The vertical slot will make the skirt department have the certain flexibility so 河南理工大學(xué)本科畢業(yè) 設(shè)計英文翻譯 10 as to the possibly small cleft with the air cylinder while thus making piston assemble, but at hot state have the in expiation of function again, result in piston choked to death in the air cylinder unlikely, past be called vertical slot inflation slot. The skirt department will make it open a side of the slot after open the vertical slot just the degree diminish, bearing the side a side that pressure is smaller in assemble should make it locate make route of travel of efficacy .The diesel engine piston is subjected to the dint big, the skirt department does not open the slot generally. (4) In order to ease the weight some pistons slice one part in both sides that opens the bore or is free from the side pressure to the skirt department, to eliminate the inertial dint, to reduce neighborhood of heat transform the quantity, and form drag along the plank type piston or short flexibility between of the plank structure skirt is good, the quantity is small, the matching cleft between the piston and air cylinder is smaller, so it is applicable to the high speed engine. (5)In order to reduce the hot inflation degree of the aluminum metal alloy piston skirt department, some gasoline machine 河南理工大學(xué)本科畢業(yè) 設(shè)計英文翻譯 11 piston imbeds the steel slice in the piston skirt department or pin. The structure characteristics of the permanent model steel is as the permanent model steel is the low carbon iron nickel metal alloy with33% ～ 36% nickel, its coefficient of expansion is only 1/10 of that of aluminum metal alloy. But pin through the permanent model steel slice and the skirt departments connect with each other and curb the degree of the coefficient of expansion. (6) the gasoline that have is on board, the center line of the piston pin is to deviate the piston center line flat surface, subjected to the main side in the route of travel of efficacy a square of the pressure partial to move the 12 mms. This kind of structure can make piston pare in from press route of travel go to make route of travel of efficacy mildly from press toward air cylinder of a the noodles transfer to press toward air cylinder of another one side, reducing the sound of knocking the urn. While installing, the direction that this kind of piston pin is partial to place can39。 (3) the quantity is small, the weight is light, descend the inertial dint of back and forth as possible The aluminum metal alloy material satisfies the top requests basically, therefore, the piston generally adopts the high strength a
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