New Generation N62 Engine Chapter 3 P.85
Course Contents/Background Material
© BMW AG, Service Training
- Oil cooling
An oil cooler is built into vehicles used in hot countries. The oil
cooler is located in front of the engine coolant heat exchanger
above the condenser in the cooling module.
The engine oil flows from the oil pump through a channel in the
crankcase to a connection on the generator support. The
generator support has an oil thermostat. A wax element in the oil
thermostat continuously opens the inflow to the oil cooler when
the oil temperature is between 100 ºC to 130 ºC.
Some of the engine oil always flows past the oil thermostat and
through the engine without being cooled, even when the oil
thermostat is fully open.
This ensures that the minimum amount of oil is supplied even if
the oil cooler is faulty.
A modified generator support, without connections for the oil
thermostat, is fitted to vehicles which do not have an oil cooler.
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