The function of the oil cooler is to cool the engine oil and keep the oil temperature within the most favorable temperature range (80~105°C) to ensure that the engine oil has normal lubrication. When the engine oil works in the high-temperature zone of the diesel engine, it absorbs a large amount of heat. At the same time, the engine oil also serves as a cooling medium to cool the piston. Therefore, the temperature of the engine oil increases, the viscosity of the engine oil decreases, and the oil is prone to oxidation and deterioration. Therefore, the temperature of the engine oil must be lowered in time to Keep the diesel engine working properly.
Full flow oil cooler
The 6BT diesel engine adopts full flow cooling (FFC) and large cam type oil cooler. The oil cooler consists of a core (which is composed of many pure copper tubes with the same diameter and partitions arranged crosswise along the axial direction), a cooler body and a cover. The oil flows outside the pure copper tube and flows axially around the partition from front to back. The coolant flows through the tube from back to front to keep the oil temperature within a certain range. On diesel engines with full flow cooling (FFC) lubrication, there is a pressure regulating valve in the front bracket of the oil cooler. The pressure regulating valve controls the oil pressure before the filter. The oil cooler of the variable flow cooling (DFC) lubrication system has a bypass valve with temperature control opening and closing to control the amount of oil flowing through the cooler. When the temperature is below 110°C, the bypass valve closes and only about half of the oil flows through the cooler. When the oil temperature is higher than 110°C, the bypass valve opens, so all the oil passes through the cooler.
Post time: Jan-03-2024