TPD1317e Chapter 5 Б а а а а Б А А Optional Gearbox Oil Cooler А Engine circuit inlet for 45mm (1.75”) diameter hose Б Engine circuit outlet for 45mm (1.75”) diameter hose Figure 3 - Connections for keel coolers (M130C, M135) 5.5 Keel Cooling System: M115T M92 and M92B engine Both engine models may be purchased in a form suitable for keel cooling. Figure 4 shows the connections provided for the keel cooler. The pipework between the engine and the cooler should be as short and direct as possible but should be sufficiently flexible to allow the engine to move on it’s flexible mountings.
The layout should discourage the formation of air locks, and venting points should be provided wherever an air lock is likely to occur. The keel cooling system should normally be filled with a water/antifreeze mixture containing 50% antifreeze. This mixture is necessary even in warm climates, as the antifreeze contains corrosion inhibitors which protect the engine cooling system. Page 29 M115T M92 / M92B Engine circuit Heat rejection 74kW (4200Btu/min) 60kW (3400Btu/min) Design value for the water tem perature at the exit from the keel cooler. Design value for the water flow through the cooler. Pipework to suit 45mm (1.75”) bore hose connections.
60oC (140oF) 45-70 l/min (10-15 galls/min) 60oC (140oF) 45-70 l/min (10-15 galls/min)