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diesel cycle
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∙ 12y ago
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Did the diesel engine save people money on gas?
The diesel engine saves a number of people a lot of money on fuel. A diesel is far more efficient. Its problem is that it is not as responsive to the accellerator. Still, locomotives or long haul trucks do not usually need tremendous accelleration. They generally need steady speed. They need distance on the least amount of fuel. For them, the diesel is far better than the otto engine.
How efficient are fossil fuels when burned?
Typical thermal efficiency for electrical generators in the industry is around 33% for coal and oil-fired plants, and up to 50% for combined-cycle gas-fired plants.The Otto engine (internal combustion four stroke engine often found in motor vehicles) has a thermal efficiency (on the test bed) of about 25 - 40% depending on the compression ratio- this can be improved somewhat by turbocharging. A Diesel engine is less efficient at the same compression as an Otto engine but the increased compression offered by diesel engines make them 30 - 35% more thermally efficient than (not turbocharged) Otto engines.These vehicle engine efficiencies are drastically reduced when in practical situations of varying loads (i.e. driving on the roads).
Why otto cycle used for petrol engine and diesel cycle for diesel engine?
A standard 20 to 1 otto cycle is used for the petrol and diesel cycles for diesel engines. It is higher than gasoline engines due to the way diesels burn and compress fuel.
Who created the motor?
Both Diesel and Gasoline Engines are basically German inventions. The Diesel Engine was invented by Rudolf Diesel The Gasoline engine by Nikolaus August Otto :-)
When was the four stroke petrol engine was invented?
The 4 stroke or 4 cycle engine was invented in 1876 Nicholas Otto in Germany. This is the earliest 4 stroke and is commonly called the Otto cycle engine. The Diesel 4 stoke was invented in 1893 by Rudolph Diesel in Germany.
The Pros of Diesel Engines?
Car engines come in two broad categories, both named after the type of fuel they consume: gasoline and diesel. In turn, the design of each engine is named after their inventors: Nikolaus Otto invented the Otto cycle for gasoline engines, and Rudolf Diesel invented the Diesel cycle for diesel engines. Diesel created his engine after learning about the engine created by Otto at the Polytechnic High School, the equivalent of an engineering college. Gasoline engines are less efficient than diesel, but diesel has a reputation for being dirtier than gasoline, so gasoline is the engine of choice for most domestic automobile manufacturers. Despite the fact that they are both internal combustion engines, the disadvantages of diesel has in the past far outweighed the advantages. Fortunately, improvements in design have made diesel more attractive, and diesel today is a serious alternative to the predominant gasoline engine. Major car makers like Mercedes-Benz incorporated diesel engines into their designs in the past, but today the diesel engine is starting to make credible inroads with other companies. The main advantage of a diesel engine is it's high fuel economy. The fuel economy of a diesel-powered truck or car is about twenty to thirty percent better than gasoline-powered vehicles. In times of high fuel prices, this can prove a big enough advantage to choose diesel by itself. Other advantages include less maintenance costs, due to the absence of spark plugs. The Diesel cycle uses the intense compression of fuel and air to ignite and combust the mixture. The reason this works is because of the high energy density of diesel fuel. The high energy density combined with the increased mechanical efficiency explains why diesel engines achieve such incredible fuel efficiency. Added advantages include improvements such as less noise, less soot and less cost. Today, the noise produced from a diesel engine and a gasoline engine are so close they are almost indistinguishable. Owners of diesel engines tend to fall in love and spread the word about how efficient and clean their cars are.
German who invented an internal combustion engine that was fueled by gasoline in 1866?
1866 - German engineers, Eugen Langen and Nikolaus August Otto improved on Lenoir's and de Rochas' designs and invented a more efficient gas engine.
What are the advantages and disadvantages of a diesel power plant?
The diesel engine is also known as a compression ignition engine to distinguish it from gasoline or spark ignition. Thermodynamically the diesel engine cycle is more efficient than gasoline (Otto cycle) because efficiency increases with compression ratio. Gasoline would ignite at compression ratios over 10 because of the heat generated during compression of the air and gasoline vapor. Diesel fuel is injected into the cylinder at much higher pressures than allowable in gasoline engines. Diesel power plants are efficient but the fuel is to expensive. Coal and natural gas are much cheaper fuels. Diesel fuel is more stable than gasoline (does not form a sludge easily like gasoline does) and therefore the engine and fuel can be left on standby for long periods. This makes diesel a good choice for emergency back up such as in fire protection systems and standby generators. Small scale diesel generators have lower capital cost than a boiler and steam turbine, which would be orders of magnitude larger in size. Also, steam power plants need a staff of operators.
What are the differences between otto cycle and diesel cycle?
Mister Rudolph Diesel was aware of the gasoline engine ([http://en.wikipedia.org/wiki/Otto_cycle Otto cycle]) problems and wanted to improve it. The gasoline engine inherently has problems with efficiency and/or fuel. In order to improve the efficiency one must increase the compression ratio of an internal-combustion engine (see the bonus section at bottom of this article). However, in the gasoline engine there is a limit - the gasoline-air mixture will self ignite once the compression gets too high (because every compression drives temperature increase). So, either you can have a low-efficient, low-compression engine that uses a cheap fuel, or you can have a high-efficient, high-compression engine that uses expensive, high-refined fuel that wont self-ignite even at high compression levels (a 120 octane gasoline?). In [http://en.wikipedia.org/wiki/Diesel_engine diesel engine] this problem is solved. The diesel engine can use much higher compression levels than the gasoline engine reaching higher efficiency. In addition, the diesel engine can use fuel that is not nearly as refined as the high-octane gasoline fuel (thus cheaper). To make this possible, Rudolph changed the Otto cycle and created the diesel cycle. The difference is that during compression phase, no fuel is present in the cylinder and thus no self-ignition can happen. The fuel is only injected at the moment the ignition is wanted - when injected into the hot pressurized air the diesel fuel self-ignites immediately (the diesel-air mixture, as we said already, is happy to ignite even at relatively low temperatures).
Why you use cut-off ratio in diesel cycle not in Otto cycle?
We use cut-off ratio in diesel cycle and not in Otto cycle because it is cost effective.
Is the petrol engine is the otto engine?
A petrol (gasoline) engine can be an otto cycle engine or it may not be. Click the link.
Are cars used in Germany?
This is a joke, right? This must be a joke? Do you have a car? It's engine was invented by a German engineer, either Nikolaus Otto or Rudolf Diesel. And even the Wankel engine was invented by...a German.
