Adjust the fuel injection temperature to avoid the precipitation of water and cause changes in
oil quality in a low temperature environment. There is a bypass valve inside the temperature
control valve, which is normally open. When the oil temperature is low, the thermal valve
does not act, and the lubricating oil enters the working chamber of the main engine directly
without cooling through the bypass valve, bypass tubing, tee, and oil filter. When the oil
temperature rises, the temperature control valve opens and gradually closes the bypass valve,
and the lubricating oil enters the oil cooler for cooling. Then enter the working chamber of
the main engine through the tee and oil filter.