Forklift Engine - Also known as a motor, the engine is a tool which could convert energy into a functional mechanical motion. Whenever a motor transforms heat energy into motion it is normally known as an engine. The engine can be available in various kinds like for example the internal and external combustion engine. An internal combustion engine usually burns a fuel along with air and the resulting hot gases are used for generating power. Steam engines are an example of external combustion engines. They utilize heat so as to generate motion with a separate working fluid.
To be able to generate a mechanical motion through varying electromagnetic fields, the electric motor should take and create electrical energy. This kind of engine is very common. Other kinds of engine can function using non-combustive chemical reactions and some will utilize springs and be driven by elastic energy. Pneumatic motors are driven through compressed air. There are different designs depending on the application needed.
Internal combustion engines or ICEs
An ICE occurs when the combustion of fuel combines together with an oxidizer inside a combustion chamber. In an internal combustion engine, the increase of high pressure gases combined together with high temperatures results in making use of direct force to some engine parts, for instance, nozzles, pistons or turbine blades. This particular force produces functional mechanical energy by means of moving the part over a distance. Normally, an ICE has intermittent combustion as seen in the popular 2- and 4-stroke piston motors and the Wankel rotary motor. Nearly all jet engines, gas turbines and rocket engines fall into a second class of internal combustion engines called continuous combustion, that takes place on the same previous principal described.
Stirling external combustion engines or steam engines greatly differ from internal combustion engines. The external combustion engine, where energy is to be delivered to a working fluid like for instance pressurized water, hot water, liquid sodium or air that is heated in a boiler of some type. The working fluid is not combined with, having or contaminated by burning products.
A variety of designs of ICEs have been created and placed on the market together with various strengths and weaknesses. When powered by an energy dense fuel, the internal combustion engine delivers an effective power-to-weight ratio. Though ICEs have been successful in various stationary applications, their real strength lies in mobile applications. Internal combustion engines dominate the power supply meant for vehicles like for example aircraft, cars, and boats. A few hand-held power tools utilize either ICE or battery power equipments.
External combustion engines
An external combustion engine utilizes a heat engine where a working fluid, like for instance steam in steam engine or gas in a Stirling engine, is heated through combustion of an external source. This particular combustion happens through a heat exchanger or through the engine wall. The fluid expands and acts upon the engine mechanism that produces motion. Next, the fluid is cooled, and either compressed and used again or disposed, and cool fluid is pulled in.
Burning fuel along with the aid of an oxidizer in order to supply the heat is called "combustion." External thermal engines could be of similar operation and configuration but utilize a heat supply from sources such as geothermal, solar, nuclear or exothermic reactions not involving combustion.
The working fluid can be of whichever constitution. Gas is actually the most common type of working fluid, yet single-phase liquid is occasionally utilized. In Organic Rankine Cycle or in the case of the steam engine, the working fluid changes phases between liquid and gas.
Click to Download the pdf