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The temperature range lies between the minimum and maximum operating temperature of the element. Elements can cover temperatures ranging from -15 °C to +120 °C. Elements may move in proportion to the temperature change over some part of the range, or may open suddenly around a particular temperature depending on the composition of the waxes.
Volkswagen Polo dashboard with, left to right, controls for lighting and the horn, gauges for engine temperature, vehicle and engine speed, fuel level, and the windshield wiper control. Vehicles are generally equipped with a variety of instruments mounted on the dashboard to indicate driving parameters and the state of the mechanics.
In 1939, Nash added a thermostat to its system, making it the first thermostatic automobile climate control system. [4] The Weather Eye "was the first truly good heating and ventilating system." [ 9 ] Additionally, defoggers (defrosters) were incorporated with the introduction of the 3900 series cars that year.
The vacuum flowed through the switch to a vacuum solenoid (such as a heat riser, used to restrict exhaust allowing the engine to heat up faster). When the coolant heated to operating temperature the vacuum switch closed off the port (port S on the vacuum switch) turning off the vacuum to the heat riser. The result is to clear the exhaust ...
A thermostat exerts control by switching heating or cooling devices on or off, or by regulating the flow of a heat transfer fluid as needed, to maintain the correct temperature. A thermostat can often be the main control unit for a heating or cooling system, in applications ranging from ambient air control to automotive coolant control.
New cars produced in the early 1990s contained the new refrigerant in their air conditioning systems. Owners of older cars with R-12 systems would either have to invest in an R-12 to R-134a conversion system, buy a new car, or find a qualified technician to recharge their older R-12 system. R-134a has been used in cars for almost 30 years.
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Print/export Download as PDF; Printable version; ... Pages in category "Temperature control" The following 22 pages are in this category, out of 22 total.