武汉理工大学：《船舶辅机》课程教学资源（PPT课件，英文版）1.3 Circulating water systems

1.3 Circulating water systems MEAN EXH. GAS EACH CYL. 350350350c350 EXH. GAS. DEVTATTTON 40.0 40.0 40.0 ,040,0“c 100 100·c MAIN BEARTN 100 00100c 350C EXH,G粪s LUB. OILT INLET T/C HT COOL. WT OUT 100c CONTROLAIR100 BAR ERG. STOP AIR 25.0 BAR INLET PRESS工 NLET TEMP 10.0 NOZZ.COOL.VATER BEAR100“c PINION SHAFT TEMP: HT COOL WT 10,0 LUB. OIL SUMP TK ME T10100·C MAN B&M 6L 48/60

1.3 Circulating water systems

1.3 Forced lubrication In motorships the oil, after passing through main and motion bearings and oil-cooled pistons, etc is either retained in the bedplate or flows by gravity to a sump tank In either case, the oil pumps, which may be self- priming, Submerged centrifugal or rotary positive displacement, draw the oil through magnetic strainers and discharge to: filters -oil coolers engine lubricating and/or cooling manifolds

1.3 Forced lubrication • In motorships the oil, after passing through main and motion bearings and oil-cooled pistons, etc., is either retained in the bedplate or flows by gravity to a sump tank. • In either case, the oil pumps, which may be self￾priming, submerged centrifugal or rotary positive displacement, draw the oil through magnetic strainers and discharge to: filters - oil coolers - engine lubricating and/or cooling manifolds

Lub oil can fow from the main bearing to the crank connecting rod crosshead, crosshead guide shoes and crosshead guides

sound Lub oil can flow from the main bearing to the crank, connecting rod, crosshead, crosshead guide shoes and crosshead guides