Diesel engine wiki

Diesel 10 is an evil diesel engine with an excavator claw arm, which he diesel engine wiki named " Pinchy " who does not like steam engines. He once had two sidekicks named Splatter and Dodgebut they eventually turned on him. Diesel 10 once visited the Island of Sodor a long time ago and caused trouble for the steam engines while he was there, diesel engine wiki. During his visit, he found Ladythe engine responsible for keeping Sodor alive, and chased her, making her crash.

The diesel engine , named after Rudolf Diesel , is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression ; thus, the diesel engine is called a compression-ignition engine CI engine. This contrasts with engines using spark plug -ignition of the air-fuel mixture, such as a petrol engine gasoline engine or a gas engine using a gaseous fuel like natural gas or liquefied petroleum gas. Diesel engines work by compressing only air, or air plus residual combustion gases from the exhaust known as exhaust gas recirculation , "EGR". Air is inducted into the chamber during the intake stroke, and compressed during the compression stroke. This increases the air temperature inside the cylinder so that atomised diesel fuel injected into the combustion chamber ignites. With the fuel being injected into the air just before combustion, the dispersion of the fuel is uneven; this is called a heterogeneous air-fuel mixture. The diesel engine has the highest thermal efficiency engine efficiency of any practical internal or external combustion engine due to its very high expansion ratio and inherent lean burn which enables heat dissipation by the excess air.

Diesel engine wiki

Diesel engines work by compressing only the air. This increases the air temperature inside the cylinder to such a high degree that it ignites atomised diesel fuel that is injected into the combustion chamber. They were originally used as a more efficient replacement for stationary steam engines. Since the s they have been used in submarines and ships. Use in locomotives, trucks, heavy equipment and electricity A diesel engine built by generation plants followed later. Detroit Diesel timing Contents 1 History 1. History The definition of a "Diesel" engine to many has become an engine that uses compression ignition. To some it may be an engine that uses heavy fuel oil. To others an engine that does not use spark ignition. However the original cycle proposed by Rudolph Diesel in was a constant temperature cycle a cycle based on the Carnot theory which would require much higher compression than what is needed for compression ignition. Diesel's idea was to compress the air so tightly that the temperature of the air would exceed that of combustion. In his US patent granted in Diesel describes the compression required for his cycle:. In later years Diesel realized his original cycle would not work and he adopted the constant pressure cycle. Diesel describes the cycle in his patent application. Notice that there is no longer a mention of compression temperatures exceeding the temperature of combustion.

Megger Insulationtester Megger Insulationtester. Japan Society of Mechanical Engineers. Many engines use resistive heaters in the intake manifold to warm the inlet air for starting, diesel engine wiki until the engine reaches operating temperature.

The name diesel is given to an engine invented by a German named Rudolf Diesel in the late 19th century. It is one of the most used kinds of internal combustion engine. Most other engines need a system called an ignition system — one that uses an electric spark — in order to burn the mix of fuel and air and make power. Other types of ignition systems use compressed air from an outside source, such as an air compressor. A diesel does not. It burns a diesel fuel similar to heating oil through very high compression or pressing together of the mix.

An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy. Available energy sources include potential energy e. Many of these processes generate heat as an intermediate energy form, so heat engines have special importance. Some natural processes, such as atmospheric convection cells convert environmental heat into motion e. Mechanical energy is of particular importance in transportation , but also plays a role in many industrial processes such as cutting, grinding, crushing, and mixing. Mechanical heat engines convert heat into work via various thermodynamic processes. The internal combustion engine is perhaps the most common example of a mechanical heat engine, in which heat from the combustion of a fuel causes rapid pressurisation of the gaseous combustion products in the combustion chamber, causing them to expand and drive a piston , which turns a crankshaft.

Diesel engine wiki

While not as popular as gasoline engines, diesel engines are still commonly used in a lot of vehicles today. In particular, you'll often find diesel engines used in applications where having a lot of torque is what matters the most. That's why you'll usually see diesel engines in things like semi trucks, freight trains, and large ships, since they often have to haul around a lot of weight. Today, we'll be talking all about the history of the diesel engine. We'll be going over its origins, how it works, and why it made the impact on the world that it did. A diesel engine is a type of internal combustion engine and thus works almost identically to a gasoline engine. In a diesel engine, air and fuel enter the combustion chamber during the piston's intake stroke. The main difference between gas and diesel engines is that diesel engines ignite their fuel entirely through the heat generated by compression.

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This means that cylinder temperatures are much higher in a diesel engine than a petrol engine, allowing less volatile fuels to be used. Usually, these engines either run continuously with partial load, or intermittently with full load. Diesel describes the cycle in his patent application. The injectors are held open by the fuel pressure. Some common places for it are underneath the drivers-side dashboard, or behind a flap near or underneath the steering wheel. Diesel engines may be designed with either two-stroke or four-stroke combustion cycles. The diesel engine has the highest thermal efficiency engine efficiency of any practical internal or external combustion engine due to its very high expansion ratio and inherent lean burn which enables heat dissipation by the excess air. Rudolf Diesel. Fuel delivery Over the years many different injection methods have been used. This was the Fairbanks and would be come an icon of American industrial highest powered Diesel engine yet power. The first diesel locomotives appeared in the early 20th century, and diesel multiple units soon after. Throughout the s Brayton continued trying to improve his engines. In February , Diesel considered supercharging the third prototype. This engine used a metered pump to supply fuel to an injection device in which the oil was vaporize by air and burned as it entered the cylinder.

Diesel engines are a class of internal combustion engine in which the fuel is burned internally and the combustion products are used as the working fluid. Unlike the spark-ignited SI engines found in the majority of early twenty-first century automobiles in which the premixed fuel-air mixture is ignited by an electric spark, diesel engines are characterized by a spontaneously initiated combustion process where the ignition is brought about by very high temperature compressed air. A small amount of diesel fuel is injected at the end of the compression stroke into the cylinder where the fuel auto-ignites.

Electronic control of the fuel injection transformed the direct injection engine by allowing much greater control over the combustion. The Discovery Channel. Diesel 10 managed to convince Thomas to arrive at the Dieselworks, where he was held hostage while he, Percy and the other diesels went to the Sodor Steamworks. Retrieved August 24, The compression in a two-stroke diesel engine is similar to the compression that takes place in a four-stroke diesel engine: As the piston passes through bottom centre and starts upward, compression commences, culminating in fuel injection and ignition. That is where the turbocharger helps. This increases the air temperature inside the cylinder so that atomised diesel fuel injected into the combustion chamber ignites. Fuel volume for each single combustion is controlled by a slanted groove in the plunger which rotates only a few degrees releasing the pressure and is controlled by a mechanical governor, consisting of weights rotating at engine speed constrained by springs and a lever. Diesel sought out firms and factories that would build his engine. Also, indirect injection engines generally run more satisfactorily on fuels with a high ignition delay for instance, petrol than direct injection engines. Retrieved July 28, Reprinted in July Most other engines need a system called an ignition system — one that uses an electric spark — in order to burn the mix of fuel and air and make power. Turbocharging can improve the fuel economy[85] of diesel engines by recovering waste heat from the exhaust, increasing the excess air factor, and increasing the ratio of engine output to friction losses. Retrieved November 21,