How does an automatic transmission oil cooler work?

An automatic transmission oil cooler works by circulating fluid through a heat exchanger to dissipate heat from the transmission fluid. The cooler consists of a series of tubes that are passed through a larger chamber filled with coolant or air. The transmission fluid flows through the tubes, while the coolant or air passes over them, causing the heat from the fluid to be transferred to the coolant or air. The cooled transmission fluid is then returned to the transmission, helping to keep it operating at a safe temperature.

Here are the steps on how an automatic transmission oil cooler works:

1. The transmission pump draws fluid from the transmission pan.

2. The fluid is pumped through the transmission oil cooler.

3. The transmission fluid flows through the tubes in the cooler.

4. The coolant or air flows over the tubes, absorbing heat from the transmission fluid.

5. The cooled transmission fluid is returned to the transmission.

The flow of coolant or air through the cooler can be controlled by a thermostat, which opens and closes to regulate the amount of heat that is dissipated. The thermostat is usually located in the transmission pan or in the cooler itself.

Transmission oil coolers are an important part of automatic transmissions, as they help to keep the transmission operating at a safe temperature. By dissipating heat from the transmission fluid, the cooler helps to prevent the fluid from overheating and causing damage to the transmission.