Why do diesel engines have two thermostats?

Their purpose is more for aerodynamics than engine cooling. The dual thermostat system was designed to accomplish the same temperature control under different load conditions. … It may be necessary to block the air side of the radiator to allow the liquid temperature to get high enough to evoke full coolant flow.

What happens if you run a diesel engine without a thermostat?

Motorsport Diesel

With no thermostat, the coolant can flow so quickly, that the engine will not transfer heat into the coolant. The engine can cook and the coolant will remain at the proper temperature, a rule of thermal dynamics.

Why do I have two thermostats?

Both thermostats can call for heat, triggering the furnace to fire, and each thermostat controls one baffle. Furthermore, why do I have two thermostats? … The thermostat in each zone controls the temperature in the zone. If you currently have two thermostats controlling two zones you will want two Nest thermostats.

Are there two thermostats in a car?

Your vehicle has two thermostats, a primary and a secondary. The primary and secondary thermostats have different temperature profiles with respect to their opening temperature because they are located on different areas of the engine.

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What happens if you run a car without a thermostat?

If you drive your car without a thermostat, it will run at 50 degree centigrade. When the car drives at this temperature, moisture or humidity will form. And when it is condensed, it will mix with oil and turn into slush (watery ice). This slush blocks out lubrication.

Where does the water go when the thermostat is closed?

When the Thermostat is closed, you will get a dribble of water through it, as the idea of the thermostat is to close off 99% of the water flowing back to the radiator when the engine is cold, thus allowing a faster warm-up.

What are the two requirements of cooling system?

The two main requirements of an efficient cooling system are: 1. It must be capable of removing only about 30% of the heat generated in the combustion chamber. Too much removal of heat lowers the thermal efficiency of the engine. 2.

Is 160 or 180 thermostat better?

Is a 160- or 180-degree thermostat better? … A 180-degree thermostat is better for engine efficiency—aka better fuel mileage and decreased emissions. A 160-degree thermostat is designed to maintain a lower engine operating temperature, which tends to make a little bit more horsepower and torque.

How do you see if a thermostat is working?

The most common signs of a broken thermostat are:

  1. Thermostat display is off or is non-responsive.
  2. Turning on the heat or AC does nothing.
  3. The heat or AC will come on, but either stays on nonstop or cuts out before the temperature setting is reached.
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