An engine is the systematic

Index

Introduction 3

Investigation 4

According to the source of energy 5

Objectives 6

Conclusions 6

Bibliography 7

Annexes 8

Introduction

An engine is the systematic part of a machine capable of operating the system, transforming some kind of energy (electric, fuel fossil, etc.) Into mechanical energy capable of doing work. On cars is this effect is a force that causes movement.

In civil engineering this is the most important force producing engines for moving the machines that are used for earthworks, drilling or lifting heavy objects. This is all thanks to engines that produce needed to perform these activities, burning fuel or using electricity force.

Investigation

The history of the improvement in the design of machines, which was mainly in the United States, gives us a fascinating illustration of how the principle of form follows function. The specialization of earth moving equipment, essentially as a function of distance hauling, did appear bulldozer, scraper, bulldozer, the compactora, the shipper and the agricultural tractor.

This process took roughly around 1880 until the end of the First World War. By this time all had acquired their familiar silhouette. The sleek design and utility tractor farm changed little in the last ninety years. The first graders, scrapers and compactoras were horse-drawn, but the tensile stress necessary required equipment too large, then quickly the tractor (teams of up to sixteen mules were mentioned), then the settler roads were adapted to pull them.

Then they were motorized. The addition of the bulldozer spoon skidder, a key to move short distances on land innovation came a little later. To the extent that steam traction did not dominate as was the case in the UK, where the indestructibility (Victorian steam machines remained in service for half a century and more) was definitely a relatively light and nimble obstacle to the development of machinery the internal combustion engine was adapted quickly.Surely the fact that it was so compact and convenient design greatly encouraged. Although it is not a trivial task to turn an engine oil in freezing temperatures early in the century, the procedures for starting a steam filled the first hour of each day. After the rapid development of the thirty years before the First World War, the design was consolidated in the years 20 and 30. The size and power of the engines increased, diesel engines became fairly universal and hydraulic systems. On the verge of World War II construction machinery reached roughly its

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