Diesel engines rely on adiabatic heating during their compression stroke to elevate the temperature sufficiently to ignite the fuel.

Diesel engines are run with an excess of oxygen to combust small particles that tend to form with only a stoichiometric amount of oxygen, necessarily producing nitrogen oxide emissions.

Diesel engines on the other hand operate on the principle of compression ignition, so that a fuel which resists autoignition will cause late ignition which will also lead to engine knock.

Recent examples of this trend include the conversion of all public transport in the city of Delhi from Diesel engines to CNG engines on the basis of the orders of the Delhi High Court ; the monitoring of forest use by the High Courts and the Supreme Court to ensure that there is no unjustified loss of forest cover ; and the directions mandating the disclosure of assets of electoral candidates for the Houses of Parliament and State Assembly.

And the ideal Otto cycle formula stated above does not include throttling losses, which do not apply to Diesel engines.

Diesel engines ( heat engines using the Diesel cycle ) are used in automobiles, power generation, Diesel-electric locomotives, and submarines.

The Diesel engine has the lowest specific fuel consumption of any large internal combustion engine employing a single cycle, 0. 26 lb / hp. h ( 0. 16 kg / kWh ) for very large marine engines ( combined cycle power plants are more efficient, but employ two engines rather than one ).

Two-stroke Diesels with high pressure forced induction, particularly turbocharging, make up a large percentage of the very largest Diesel engines.

In North America, Diesel engines are primarily used in large trucks, where the low-stress, high-efficiency cycle leads to much longer engine life and lower operational costs.

Many model airplanes use very simple " glow " and " Diesel " engines.

" Diesel " model airplane engines have variable compression ratios.

Diesel engines in a museum

Diesel engines are manufactured in two-stroke and four-stroke versions.

Diesel designed many heat engines, including a solar-powered air engine.

Companies such as MAN B & W Diesel, ( formerly Burmeister & Wain ) and Wärtsilä ( which acquired Sulzer Diesel ) design such large low-speed engines.

Diesel engines are often used for back up generation, usually at low voltages.

Diesel engines take in air only, and shortly before peak compression, spray a small quantity of diesel fuel into the cylinder via a fuel injector that allows the fuel to instantly ignite.

HCCI is more difficult to control than other popular modern combustion engines, such as Spark Ignition ( SI ) and Diesel.

Because HCCI operates on lean mixtures, the peak temperatures are lower in comparison to spark ignition ( SI ) and Diesel engines.

The 6. 4 liter also has a Diesel Particulate Filter ( DPF ) and dual EGR coolers which are capable of reducing exhaust gas temps by up to 1000 degrees before they reach the EGR valve and mix with the intake charge.

The maximum thermal efficiency of a Diesel cycle is dependent on the compression ratio and the cut-off ratio.

However, a Diesel engine will be more efficient overall since it will have the ability to operate at higher compression ratios.

If a petrol engine were to have the same compression ratio, then knocking ( self-ignition ) would occur and this would severely reduce the efficiency, whereas in a Diesel engine, the self ignition is the desired behavior.

* February 27 – Rudolf Diesel applies for a patent on his compression ignition engine ( the Diesel engine ).

Diesel engines rely solely on the heat of compression for ignition.

The high compression engine, which ignites its fuel by the heat of compression is now called the Diesel engine whether a four-stroke or two-stroke design.

Diesel engines rely on fuel compression for ignition, but usually also have glowplugs that preheat the combustion chamber to allow starting of the engine in cold weather.

These engines were precursors to what is now known as the Diesel engine: Rudolf Diesel based his designs ( 1892 ) on Akroyd Stuart's proven inventions ( 1890 ) of direct ( airless ) fuel injection and compression ignition.

Diesel engines do not have preignition problems because fuel is injected at the end of the compression stroke, therefore higher compression is used.

Diesel engines can also tolerate much higher levels of boost pressure than Otto cycle engines, because only air is being compressed during the compression phase, and fuel is injected later, removing the knocking issue entirely.

They had the advantage of comparative simplicity, since they did not require the air compressor used by early Diesel engines ; fuel was injected mechanically ( solid injection ) near the start of the compression stroke, at a much lower pressure than that of Diesel engines.

* Rudolf Diesel – compression ignition internal combustion engine

Ignition systems are not required for Diesel engines which rely on compression to ignite the fuel / air mixture.

Where Otto had realized in 1861 that the efficiency of the engine could be increased by first compressing the fuel mixture prior to its ignition, Rudolph Diesel wanted to develop a more efficient type of engine that could run on much heavier fuel.

Diesel buses, although unquestionably more flexible in operation and requiring far lower initial capital costs, because they did not rely on fixed overhead power lines and tracks like trolley buses and light rail vehicles, were ruled out on grounds of air pollution.

On January 11, 2008, Talk Is Free Theatre presented the Canadian professional premiere ( in concert ) at the Gryphon Theatre in Barrie, Ontario, with a fundraiser performance on January 13 at the Diesel Playhouse in Toronto, Ontario.

The image on the left shows a p-V diagram for the ideal Diesel cycle ; where is pressure and is specific volume.

The ideal Diesel cycle follows the following four distinct processes ( The color references refer to the color of the line on the diagram.

Diesel generator on an oil tanker

Rudolf Diesel died mysteriously when he crossed the English Channel on the SS Dresden.

The lightweight petrol internal combustion engine, operating on a four-stroke Otto cycle, has been the most successful for light automobiles, while the more efficient Diesel engine is used for trucks and buses.

For example, John Ericsson developed an external heated engine running on a cycle very much like the earlier Diesel cycle.

Large slow-speed Diesel engines may require additional support for the side forces on the piston.

Before filming began, several of the film's stars, including Edward Burns, Barry Pepper, Vin Diesel, Adam Goldberg, Giovanni Ribisi, and Tom Hanks, endured ten days of " boot camp " training and work on the film set to prepare for their roles.

Diesel submarines have barometers installed on them to monitor vacuum being pulled in the event that the snorkel closes while the diesels are running and, as a consequence, sucking the air out of the boat.

* " Shifting gears " on a railroad locomotive ; see Diesel locomotive # Propulsion system operation

Diesel fuel is especially hazardous on road surfaces because it forms a thin, oily film that cannot be easily seen by drivers.

Though all Copenhagen operations were consolidated at Tegleholmen in 1994 and the last volume production unit at the B & W Shipyard was delivered in 1996. in 2000 MAN B & W Diesel two-stroke diesel engines had over 70 % market share, with a substantial number of MC-line engines on order.

MAN B & W Diesel, Denmark, employed approximately 2, 200 at the end of 2003 and had 100 million kW, or more than 8000 MC engines, in service or on order by 2004.

Diesel fuel contamination was discovered on November 11, 1988 during the removal of a 30-year old steel 500-gallon tank.

The electric starter motor or starting motor is the most common type used on gasoline engines and small Diesel engines.