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5.润滑系统 CA488发动机润滑系为复合式润滑(压力和飞溅)。发动机油底壳为钢板冲压成型,其两侧与缸体连接的接触面用RTV胶密封,前后两端面装有密封条,保证发动机密封性。发动机工作时,由机油泵的泵油作用,润滑油通过吸油器、机油泵,并按发动机内油路(见图1中粗线)通过全流式旋转装机油滤清器的止回阀进入滤清器。经纸质滤芯过滤的润滑油,通过单向阀流至贯通缸体全长的主油道内。通过每缸隔板上的斜油孔把主油道内的加压润滑油供给每个主轴承。通过曲轴内部钻孔又将润滑油从主轴颈输至连杆轴颈。从主油道分出两个分油道,润滑中间轴前后轴套。在缸体第五隔板处,有一条将润滑油通往缸盖的垂直油道.油道内有一节流阀,经过节流阀的润滑油通过第四缸左侧最后一个缸盖螺栓的间隙,上升至贯通缸盖全长的油道中,然后直接将润滑油供给液压间隙调节器。在主轴承座上另钻斜孔与缸盖主油
5. Lubrication System CA488 engine lubrication system for compound lubrication (pressure and splash). Engine oil pan is made of steel stamping, both sides of the contact surface with the cylinder block sealed with RTV glue, seal the front and rear ends with a seal to ensure engine sealing. Engine work, by the oil pump pump oil, oil through the oil, oil pump, and according to the engine oil circuit (see thick line in Figure 1) through the full-flow rotary oil filter check valve into Filter. The oil filtered through the paper filter, through the one-way valve to the main oil passage through the full length of the cylinder. The pressurized oil in the main gallery is supplied to each of the main bearings through the diagonal oil hole in each baffle. Through the crankshaft internal drilling and oil from the main journal to the connecting rod journal. Divide two sub-channels from the main oil gallery and lubricate the front and rear hubs of the intermediate shaft. At the fifth partition of the cylinder, there is a vertical oil passage leading to the cylinder head, there is a throttle valve in the oil passage, and the oil passing through the throttle valve passes through the last cylinder head bolt on the left side of the fourth cylinder The clearance rises into the oil passage through the full length of the cylinder head and supplies the lubricant directly to the hydraulic lash adjuster. In the main bearing on the other drilling inclined hole and cylinder head main oil