How powerful bulldozers work

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How powerful bulldozers work.
Bulldozer - digger on a caterpillar, or wheeled, belonging to the class of special equipment. The appearance of the first bulldozer dates back to the year 1929. Just on the tractor was mounted a primitive device in the form of a metal shield. Now it is a full-featured machine equipped with electronics and other achievements of advanced technologies.
Ahead of the car is equipped with a canopy - a dump of curvilinear form, which is its working tool, performing: layered digging, planning of the territory or movement of soils, minerals, road construction and other materials. The bulldozer is equipped with a special tool - a blade, in front, and a ripper at the rear.
Absolute and unsurpassed record-holder for power and dimensions among bulldozers, is rightly considered Komatsu D575A, included in the Guinness Book of Records. Engine power - 1000 hp He hung this giant more than 142 tons, its length reached 12.7 m. For the first time the world saw this miracle of technology at an exhibition in Texas in 1981. At the same time, this supercritical led the world ranking of bulldozers.
 After 10 years, the serial production of these machines began, which have found application in mining industries in America and in Astralia. The engine has a water cooling system, a direct fuel injection and a turbocharger, which allows to increase engine power due to exhaust gases. Turbocharging is used in almost all internal combustion engines, which require power amplification, and in particular in giant bulldozers. Naturally, all the power characteristics of the engine in the most powerful bulldozer in the world are not aimed at the speed of the machine, but on its traction power. Fuel for the superdrive is diesel, which is poured into a tank capacity of 2000 liters.
The largest bulldozer in the world is equipped with a heap of 3.63 meters in height and about 7.4 meters in width, which takes almost 70 cubic meters of soil in one run. This is the volume of a spacious room, or a small house. For this machine a blade of large dimensions has been developed - about 5 meters high and about 12 meters wide. But such a giant detail, the manufacturer manufactures on request. The blade bites into the ground to a depth of 90 cm, and rises to a height of 175 cm. The ripper tooth at a time develops the soil to a depth of 2 meters. A total of 88 super-giants were built, scattered around the world.