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However, Detroit Diesel two-stroke cycle engines commonly use oil cooled by water, with the water in turn cooled by air. [4] The coolant used in many liquid-cooled engines must be renewed periodically and can freeze at ordinary temperatures thus causing permanent engine damage when it expands. Air-cooled engines do not require coolant service ...
Liquid cooling refers to cooling by means of the convection or circulation of a liquid. Examples of liquid cooling technologies include: Cooling by convection or circulation of coolant, including water cooling; Liquid cooling and ventilation garments, worn by astronauts; Liquid metal cooled reactors; Radiators (engine cooling) Cooling towers
Most modern automotive engines are both water and air-cooled, as the water/liquid-coolant is carried to air-cooled fins and/or fans, whereas larger engines may be singularly water-cooled as they are stationary and have a constant supply of water through water-mains or fresh-water, while most power tool engines and other small engines are air ...
Internal combustion engines are often cooled by circulating a liquid called engine coolant through the engine block and cylinder head where it is heated, then through a radiator where it loses heat to the atmosphere, and then returned to the engine. Engine coolant is usually water-based, but may also be oil.
Water cooling is a method of heat removal from components and industrial equipment. Evaporative cooling using water is often more efficient than air cooling. Water is inexpensive and non-toxic; however, it can contain impurities and cause corrosion. Water cooling is commonly used for cooling automobile internal combustion engines and power ...
Current Honda general-purpose engines are air-cooled 4-stroke gasoline engines but 2-stroke, Diesel, water-cooled engines were also manufactured in the past. The current engine range provide from 1 to 22 hp (0.7 to 16.5 kW). More than 5 million general-purpose engines were manufactured by Honda in 2009.
Air-cooled engines rely on the circulation of air directly over heat dissipation fins or hot areas of the engine to cool them in order to keep the engine within operating temperatures. Air-cooled designs are far simpler than their liquid-cooled counterparts, which require a separate radiator , coolant reservoir, piping and pumps.
Air-to-liquid intercoolers are usually heavier than their air-to-air counterparts, due to additional components making up the system (e.g. water circulation pump, radiator, fluid, and plumbing). The majority of marine engines use air-to-liquid intercoolers, since the water of the lake, river or sea can easily be accessed for cooling purposes.