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BMW M57 Lubrication System
The BMW M57 oil system — oil pump, operating pressures, filtration and oil-circuit layout.
System overview
Lubrication system corresponds to that of the M47, with geometric adaptations and optimisation measures. Components: oil pan with dipstick, oil pump, oil filter with integrated oil-to-water heat exchanger, oil spray nozzles.
Oil pump — location
Arranged in oil pan
Oil pump — drive
Chain drive
Oil pump — intake
Via intake pipe
Oil filter with integrated oil-to-water heat exchanger
Oil-to-water heat exchanger connected to both oil and engine water circuits. Heats oil faster via coolant when cold and cools it via coolant at operating temperature; shortening warm-up reduces fuel consumption.
Oil filter module — mounting
Directly on the engine block. Water supplied directly from engine block (crankcase); water outlet on the heat exchanger (as M47).
Oil module callouts
1 = oil filter housing with element; 2 = oil pressure sensor; 3 = oil-to-water heat exchanger
Oil spray nozzles
For cooling the piston crown; mounted in the engine block; designed as hook-type nozzles.
Oil galleries — M57 overview (Fig. 36 callouts)
1 Oil pump; 2 Oil intake pipe; 3 Unfiltered oil duct before filter; 4 Oil filter with oil cooler; 5 Precision oil gallery after filter (main oil gallery); 6 Crankshaft main bearing; 7 Pressure supply to exhaust turbocharger; 8 Piston spray nozzle (hook-type nozzle); 9 Pressure supply to chain tensioner; 10 Riser to cylinder head; 11 Pressure supply to vacuum pump; 12 Pressure supply for upper chain lubrication; 13 Camshaft bearing; 14 Hydraulic valve lash adjuster gallery (HVA); 15 Runout stop, HVA gallery
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