Gajendra Singh Follow. PG Student. Green engine - an introduction. Green Engine. Green Engine Technology. Related Books Free with a 30 day trial from Scribd. Related Audiobooks Free with a 30 day trial from Scribd. Outstanding Leadership Stan Toler. Green Engine Final Report 1. Direct Air Intake 4. Strong Swirling 4. Sequential Variable Compression Ratio 4. Direct Fuel Injection 4. Super Air-fuel Mixing 4.
Lowest Surface to Volume Ratio 4. Controllable Combustion Time 4. Constant Volume Combustion 4. Multi-power Pulses 4. High working Temperature 4. High Expansion Ratio 4. Self-Adapting Sealing System 4. Vibration Ratio 4. Limited Parts and Small Size 5. Intake 5. Compression 5. Mixing 5. Combustion 5. Power 5. Exhaust 6. It has got some unique features that were used for the first time in the making of engines. This engine is a piston less one with features like sequential variable compression ratio, direct air intake, direct fuel injection, multi-fuel usage etc.
The efficiency of this engine is high when compared to the contemporary engines and also the exhaust emissions are near zero. The significance of the engine lies in the efficiency when the present world conditions of limited resources of energy are considered. After few hundred years of industrial development, we are facing these global problems while at the same time we maintain a high standard of living.
Coal, petroleum, natural gas, water and nuclear energy are the five main energy sources that have played important roles and have been widely used by human beings. At present, the energy consumed all over the world almost completely relies on the supply of the five main energy sources. The consumption of petroleum constitutes approximately 60 percent of energy used from all sources, so it is the major consumer of energy.
Statistics show that, the daily consumption of petroleum all over the world today is 40 million barrels, of which about 50 percent is for automobile use. In accordance with this calculation, daily consumption of petroleum by automobiles all over the world is over two million tonnes. At the same time as these fuels are burnt, poisonous materials such as million tonnes of carbon monoxides CO , million tonnes of hydrocarbons HC , million tonnes of carbon C , 50 million tonnes of nitrogen oxides NOx are emitted into the atmosphere every year, severely polluting the atmosphere.
Also, this situation is fast growing with more than 50 million vehicles to be produced annually all over the world and place into the market. However, at is estimate that petroleum reserve in the globe will last for only 38 years. The situation is really very grim. So to reduce the environment hazards only way is to use energy in the way it will not harm environment. Addressing such problems is what a Green engine does or tries to do.
The Green engine as it is named for the time being, is a six phase engine, which has a very low exhaust emission, higher efficiency, low vibrations etc. Apart from these features, is its uniqueness to adapt to any fuel which is also well burnt. Needless to say, if implemented will serve the purpose to a large extent.
Thus it has six independent or separate working processes: intake, compression, mixing, combustion, power and exhaust, resulting in the high air charge rate. The rotor is made of high heat resistance and low expansion rate material such as ceramic. Whereas, the metal used is an alloy of steel, aluminium and chromium. Even though the engine is of symmetric shape, the vanes traverse an unsymmetrical or uneven boundary. This shape cannot be compromised as this a result of the path taken by the intake and exhaust air.
This uneven boundary is covered by the vanes in a very unique fashion. The vanes are made in such a way that it comprises of two parts: one going inside a hollow one.
At the bottom of the hollow vane is a compressive spring. On top of this spring is mounted the other part of the vane. Now, let us come to the working of the engine. A duct is provided on the sides of the vane and rotor.
The duct is so shaped that when the air moves through, strong swirls generate when it gets compressed in the chamber. The air pushes the vane blades which in turn impart a proportionate rotation in the small rotor which houses the chambers. The inlet air duct ends with a very narrow opening to the chamber. The volume of these chambers is comparatively very small. Naturally, the compression obtained by such a procedure is very satisfactory.
As earlier mentioned, the compressed air is in a swirling state, ready to be mixed with the fuel which will be injected into the chamber when it will be place before the injector by the already rotating rotor.
Because of the shape of the chamber, the fuel mixes well with the compressed air. The importance of ideal mixing leads to deletion of CO emission. And also because of the strong swirling, a centrifugal effect is exerted in the air-fuel mixture. Burst out under small amount of mixtures, free of vibrations, and high expansion ratio make the Green engine much quieter.
It is really environment-friendly. Green engine vehicles could transport troops on the battlefield of the future, and could serve as a vital source of auxiliary power in combat. High Efficiency. Because many great innovations are being employed in the engine design such as: direct air intake, sequential variable compression ratio, super mixing process, constant volume combustion, controllable combustion time, high working temperature of the burner, high expansion ratio and self adapting sealing system etc.
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