what is the purposes of a clutch on electric motor

Silicone fluid stored inside a reservoir is allowed to pass through these open ports and enter the working area of the clutch. As the spring is heated, it turns and allows valve ports to open within the clutch. As hot air blows across the radiator, it heats a thermal spring mounted at the front of the clutch. The thermal fan clutch operates in response to underhood temperatures.

However, non-thermal clutches are a lower-cost option than thermal-style clutches. At high speeds, the silicone fluid within in the clutch will lose its ability to transfer the energy from the shaft to the fan clutch body (and therefore, the fan) and the fan is then allowed to almost free-wheel, removing its load from the engine.Ī non-thermal clutch provides a steady flow of cooling air but is always engaged, so it offers lower fuel savings than a thermal-style fan clutch. At low and idling speeds, the clutch allows the fan blade to turn at almost a 1:1 ratio.

Non-thermal clutches operate solely based on the shaft speed of the water pump. The main types are non-thermal, thermal, and electronic - all of which use a silicone fluid to engage and disengage your fan. It really depends on the style of fan clutch you choose. What is a Fan Clutch?Ī fan clutch is a temperature-controlled coupling between the water pump shaft and the fan which allows the fan to be operational at low speeds and disconnected at higher speeds. This allows the engine to operate more efficiently by removing the load that the fan places on it. The oft-overlooked fan clutchdoesn’t get a ton of credit or attention, but it’s an essential piece of the cooling equation in many vehicles. It helps your cooling system operate effectively and your engine operate efficiently.īut let’s start at the beginning. When you think of an automotive cooling system, the first thing that likely comes to mind is your radiator…or maybe your cooling fan.

What is the purposes of a clutch on electric motor