商谈
发表于 2025-3-28 18:10:22
http://reply.papertrans.cn/99/9810/980968/980968_41.png
sleep-spindles
发表于 2025-3-28 21:59:49
Determining Displacement,should be viewed as a positive displacement air pump. In order to produce the required work one must burn sufficient fuel. In order to completely react the fuel to products one must supply sufficient air. Determining the displacement required for a given engine is thus a matter of working backwards
sultry
发表于 2025-3-29 03:00:14
Engine Configuration and Balance, decide upon the number of cylinders over which the displacement will be divided, and the orientation of the cylinders. The factors that must be considered include cost and complexity, reciprocating mass and required engine speed, surface-to-volume ratio, pumping losses, packaging, and the balancing
不能根除
发表于 2025-3-29 05:24:21
Cylinder Block and Head Materials and Manufacturing,on. This chapter begins with a brief look at the aluminum and gray iron alloys typically used for cylinder blocks and heads. Magnesium alloys, and composite blocks with magnesium portions are receiving increased attention for weight reduction, and will also be briefly covered. Many of the design con
CLOWN
发表于 2025-3-29 09:37:34
http://reply.papertrans.cn/99/9810/980968/980968_45.png
媒介
发表于 2025-3-29 12:35:50
http://reply.papertrans.cn/99/9810/980968/980968_46.png
considerable
发表于 2025-3-29 18:00:47
http://reply.papertrans.cn/99/9810/980968/980968_47.png
生存环境
发表于 2025-3-29 23:31:34
Engine Bearing Design, roller bearings are sometimes seen in automotive and heavy-duty engines the majority of engines for these applications use primarily plain bearings. Roller bearings are receiving increasing attention due to their lower oil supply requirements and potential for reduced friction and parasitic losses
控诉
发表于 2025-3-30 02:11:28
Engine Lubrication, of course a correct list but an incomplete one. Several further important lubricant functions are described in the paragraphs that follow. It is important to keep all of these functions in mind in the design and development of an engine’s lubrication system.
担忧
发表于 2025-3-30 05:35:54
http://reply.papertrans.cn/99/9810/980968/980968_50.png