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The most common type of block heater is an electric heating element in the engine block, which is connected through a power cord often routed through the vehicle's grille. Some block heaters are designed to replace one of the engine's core plugs and therefore heat the engine via the coolant.
Andrew Freeman (March 10, 1909 – January 17, 1996) was an American electrical engineer and the inventor of the electric block heater for automobiles. [1] Andrew L. Freeman was born in Upham, North Dakota. He attended the University of North Dakota in Grand Forks, North Dakota, where he majored in electrical engineering.
Core plugs were initially designed merely as a necessary engine block component which was made necessary due to the "sand casting" method used to initially form an engine block. After the initial casting of the engine block, core plugs were designed to plug off the "sand exit ports" of the newly formed engine block.
A positive-temperature-coefficient heating element (PTC heating element), or self-regulating heater, is an electrical resistance heater whose resistance increases significantly with temperature. The name self-regulating heater comes from the tendency of such heating elements to maintain a constant temperature when supplied by a given voltage.
An electric heater is an electrical device that converts an electric current into heat. [1] The heating element inside every electric heater is an electrical resistor, and works on the principle of Joule heating: an electric current passing through a resistor will convert
Thick-film heaters can largely be characterized under two subcategories – negative-temperature-coefficient (NTC) and positive-temperature-coefficient (PTC) materials – based on the effect of temperature changes on the element's resistance. NTC-type heaters are characterized by a decrease in resistance as the heater temperature increases and ...
Some of that coolant can be diverted through the heater core to give some engine heat to the cabin, or adjust the temperature of the conditioned air. A heater core is a small radiator located under the dashboard of the vehicle, and it consists of conductive aluminium or brass tubing with cooling fins to increase surface area. Hot coolant ...
Motorcycle engines may also use carburetor heating. In many cases, and especially with simple air-cooled engines, this relies solely upon an electric heating element attached to the carburetor, as a heat stove and attached warm air feed would be bulky, complex, difficult to route, and may even interfere with normal cooling of the cylinder block.