16-09-2014, 11:37 AM
1. GLOBAL ISSUES
[attachment=68007]
1. GLOBAL ISSUES
Everyday radios, newspapers, televisions and the internet warn us of energy exhaustion, atmospheric pollution and hostile climatic conditions. 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. The most important problem we are faced with is whether we should continue “developing” or “die”.
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.
The United Nations Energy Organization names all of them “elementary energies”, as well as “conventional energies”. Electricity is merely a “second energy” derived from these sources. 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. That is to say, auto petroleum constitutes about 35 percent of the whole petroleum consumption. 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 500 million tonnes of carbon monoxides (CO), 100 million tonnes of hydrocarbons (HC), 550 million tonnes of carbon ©, 50 million tonnes of nitrogen oxides (NOx) are emitted into the atmosphere every year, severely polluting the atmosphere. At the same time large quantities of carbon dioxide (CO2) gases, resulting from burning, have also taken the major responsibility for the “green house effect”. Atmospheric scientists now believe that carbon dioxide is responsible for about half the total “green house effect”. Therefore, automobiles have to be deemed as the major energy consumer and atmosphere’s contaminator. 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.
2. TECHNICAL FEATURES
Compared to conventional piston engines, operated on four phases, the Green engine is an actual six phase internal combustion engine with much higher expansion ratio. Thus it has six independent or separate working processes: intake, compression, mixing, combustion, power and exhaust, resulting in the high air charge rate. Satisfactory air-fuel mixing, complete burning, high combustion efficiency and full expansion. The most important characteristic is the expansion ratio being much bigger than the compression ratio. Also, the other main features are the revolutionary innovations of the sequential variable compression ratio, constant volume combustion and self-adapting sealing system. Therefore, an engine having extremely high thermal efficiency, near-zero emissions, quietness, light and small, lower cost with capability of burning of various fuels has come into being.
2.1 Direct Air Intake
Direct air intake means that there is no air inlet pipe, throttle and inlet valves on the air intake system. Air filter is directly connected to the intake port of the engine, and together with the less heating effect of air intake process, benefited from lower temperature of independent intake chamber, a highest volumetric efficiency which makes engine produce a high torque of output on all speed range is achieved . The pump loss which consumes the part of engine power is eliminated .Also fuel measuring facilities are built-in,and parts are saved.
High Working Temperature
Because the burner, which is made of high heat resistance and low expansion rate material, such as ceramic, operates without cooling, a relatively high working temperature can eliminate the quenching zone which is the main source of emission and can greatly reduce the heat losses in the combustion chamber.
2.11 High Expansion Ratio
High expansion ratio can make the burnt gases to release much more power. In other words, the waste gases while they run out of the engine are only bringing much less energy with them. Therefore, the engine’s thermal efficiency is greatly raised, and at the same time, the noise and temperature of the exhaust are tremendously dropped.
2.12 Self-Adapting Sealing System
This is another revolutionary innovation applied in the Green engine: it can eliminate a number of seal plates or strips to achieve gapless seal and to provide most efficient and reliable sealing system with less friction.
2.13 Vibration Free
As major moving parts, vanes which are counted in little mass and operated symmetrically, the performance of the engine is very smooth. Hence, vibrations are eliminated.
3. CONSTRUCTION AND WORKING
As earlier mentioned, the Green engine is a six phase, internal combustion engine with much higher expansion ratio. The term “phase” is used instead of “stroke” because stroke is actually associated to the movement of the piston. The traveling of the piston from bottom dead centre to the top dead centre or vice versa is termed a stroke. But, in this engine pistons are absent and hence, the term “phase” is used. The six phases are: intake, compression, mixing, combustion, power and exhaust.
The engine comprises a set of vanes, a pair of rotors which houses a number of small pot-like containers. It is here, in these small containers that compression, mixing, combustion are carried out. The engine also contains two air intake ports, and a pair of fuel injectors and spark plugs. The spark plugs are connected in such a system so as to deactivate them, when a fuel which does not need sparks for ignition is used. 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.
ADVANTAGES
As obvious from the technical features which include effective innovations, the advantages of the Green engine over the contemporary piston engines are many.
4.1 Small Size and Light Weight
As Green engine is very compact with multi-power pulses, the size and weight could be 1/5 to 1/10 of the conventional piston engines on same output. Its power to weight ratio could be more than 2 hp per pound without supercharge or turbo charge.
4.2 Limited Parts
There are only some dozens of parts easy to be manufactured in the engine structure.
4.3 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., the thermal efficiency of the engine could be potentially as high as 65 %, even more if water add-in technology is to be considered.
4.4 Multi-fuels
Due to six phases of working principle, super air fuel mixing process and constant volume combustion with controllable time, the Green engine becomes the only real multi-fuel engine on our planet; any liquid or gas fuels can be burnt well. Also it would be ideal to coal powder if special anti-wearing material is employed.
4.5 Near-zero Emissions
With perfect air-fuel mixture, complete combustion under lower peak temperature and free of quenching effect, the emission of CO, HC and NOx could be near zero, thereby, a catalytic converter could be not required at all.
4.6 Smooth Operation
Due to inherence of good dynamic and static balance the performance of the Green engine is as smooth as an electric motor.
4.7 Fast Accelerating Response
Direct injection, little rotating inertia and deleted reciprocating motion can characterize the Green engine with operating at a very fast accelerating response.
4.8 Quietness and Low Exhaust Temperature
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. This is because these engines are quiet, flexible and operate at low temperature, making them ideal for use in “stealth” vehicles.
4.9 Ideal to Hydrogen Fuel
Separation of working chambers from each other is an ideal design for any fuel to prevent backfire, especially for the hydrogen fuel.
4.10 Highly Reliable
As there are fewer moving parts operating smoothly, no crankshaft, valves, connecting rods, cams and timing chains, and intake and exhaust actions are accomplished directly by the motion of the vanes. Thus, it is highly reliable.
4.11 Low Cost
Limited parts, small in size, light in weight and depending upon current mature materials and manufacturing technologies, mean that it would be done at much lower cost on manufacture, transportation, installing to other devices, and maintenance.
5. CONCLUSION
The Green engine’s prototypes have been recently developed, and also because of the unique design, limitations have not been determined to any extent. But even in the face of limitations if any, the Green engine is sure to serve the purpose to a large extent.
[attachment=68007]
1. GLOBAL ISSUES
Everyday radios, newspapers, televisions and the internet warn us of energy exhaustion, atmospheric pollution and hostile climatic conditions. 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. The most important problem we are faced with is whether we should continue “developing” or “die”.
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.
The United Nations Energy Organization names all of them “elementary energies”, as well as “conventional energies”. Electricity is merely a “second energy” derived from these sources. 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. That is to say, auto petroleum constitutes about 35 percent of the whole petroleum consumption. 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 500 million tonnes of carbon monoxides (CO), 100 million tonnes of hydrocarbons (HC), 550 million tonnes of carbon ©, 50 million tonnes of nitrogen oxides (NOx) are emitted into the atmosphere every year, severely polluting the atmosphere. At the same time large quantities of carbon dioxide (CO2) gases, resulting from burning, have also taken the major responsibility for the “green house effect”. Atmospheric scientists now believe that carbon dioxide is responsible for about half the total “green house effect”. Therefore, automobiles have to be deemed as the major energy consumer and atmosphere’s contaminator. 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.
2. TECHNICAL FEATURES
Compared to conventional piston engines, operated on four phases, the Green engine is an actual six phase internal combustion engine with much higher expansion ratio. Thus it has six independent or separate working processes: intake, compression, mixing, combustion, power and exhaust, resulting in the high air charge rate. Satisfactory air-fuel mixing, complete burning, high combustion efficiency and full expansion. The most important characteristic is the expansion ratio being much bigger than the compression ratio. Also, the other main features are the revolutionary innovations of the sequential variable compression ratio, constant volume combustion and self-adapting sealing system. Therefore, an engine having extremely high thermal efficiency, near-zero emissions, quietness, light and small, lower cost with capability of burning of various fuels has come into being.
2.1 Direct Air Intake
Direct air intake means that there is no air inlet pipe, throttle and inlet valves on the air intake system. Air filter is directly connected to the intake port of the engine, and together with the less heating effect of air intake process, benefited from lower temperature of independent intake chamber, a highest volumetric efficiency which makes engine produce a high torque of output on all speed range is achieved . The pump loss which consumes the part of engine power is eliminated .Also fuel measuring facilities are built-in,and parts are saved.
High Working Temperature
Because the burner, which is made of high heat resistance and low expansion rate material, such as ceramic, operates without cooling, a relatively high working temperature can eliminate the quenching zone which is the main source of emission and can greatly reduce the heat losses in the combustion chamber.
2.11 High Expansion Ratio
High expansion ratio can make the burnt gases to release much more power. In other words, the waste gases while they run out of the engine are only bringing much less energy with them. Therefore, the engine’s thermal efficiency is greatly raised, and at the same time, the noise and temperature of the exhaust are tremendously dropped.
2.12 Self-Adapting Sealing System
This is another revolutionary innovation applied in the Green engine: it can eliminate a number of seal plates or strips to achieve gapless seal and to provide most efficient and reliable sealing system with less friction.
2.13 Vibration Free
As major moving parts, vanes which are counted in little mass and operated symmetrically, the performance of the engine is very smooth. Hence, vibrations are eliminated.
3. CONSTRUCTION AND WORKING
As earlier mentioned, the Green engine is a six phase, internal combustion engine with much higher expansion ratio. The term “phase” is used instead of “stroke” because stroke is actually associated to the movement of the piston. The traveling of the piston from bottom dead centre to the top dead centre or vice versa is termed a stroke. But, in this engine pistons are absent and hence, the term “phase” is used. The six phases are: intake, compression, mixing, combustion, power and exhaust.
The engine comprises a set of vanes, a pair of rotors which houses a number of small pot-like containers. It is here, in these small containers that compression, mixing, combustion are carried out. The engine also contains two air intake ports, and a pair of fuel injectors and spark plugs. The spark plugs are connected in such a system so as to deactivate them, when a fuel which does not need sparks for ignition is used. 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.
ADVANTAGES
As obvious from the technical features which include effective innovations, the advantages of the Green engine over the contemporary piston engines are many.
4.1 Small Size and Light Weight
As Green engine is very compact with multi-power pulses, the size and weight could be 1/5 to 1/10 of the conventional piston engines on same output. Its power to weight ratio could be more than 2 hp per pound without supercharge or turbo charge.
4.2 Limited Parts
There are only some dozens of parts easy to be manufactured in the engine structure.
4.3 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., the thermal efficiency of the engine could be potentially as high as 65 %, even more if water add-in technology is to be considered.
4.4 Multi-fuels
Due to six phases of working principle, super air fuel mixing process and constant volume combustion with controllable time, the Green engine becomes the only real multi-fuel engine on our planet; any liquid or gas fuels can be burnt well. Also it would be ideal to coal powder if special anti-wearing material is employed.
4.5 Near-zero Emissions
With perfect air-fuel mixture, complete combustion under lower peak temperature and free of quenching effect, the emission of CO, HC and NOx could be near zero, thereby, a catalytic converter could be not required at all.
4.6 Smooth Operation
Due to inherence of good dynamic and static balance the performance of the Green engine is as smooth as an electric motor.
4.7 Fast Accelerating Response
Direct injection, little rotating inertia and deleted reciprocating motion can characterize the Green engine with operating at a very fast accelerating response.
4.8 Quietness and Low Exhaust Temperature
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. This is because these engines are quiet, flexible and operate at low temperature, making them ideal for use in “stealth” vehicles.
4.9 Ideal to Hydrogen Fuel
Separation of working chambers from each other is an ideal design for any fuel to prevent backfire, especially for the hydrogen fuel.
4.10 Highly Reliable
As there are fewer moving parts operating smoothly, no crankshaft, valves, connecting rods, cams and timing chains, and intake and exhaust actions are accomplished directly by the motion of the vanes. Thus, it is highly reliable.
4.11 Low Cost
Limited parts, small in size, light in weight and depending upon current mature materials and manufacturing technologies, mean that it would be done at much lower cost on manufacture, transportation, installing to other devices, and maintenance.
5. CONCLUSION
The Green engine’s prototypes have been recently developed, and also because of the unique design, limitations have not been determined to any extent. But even in the face of limitations if any, the Green engine is sure to serve the purpose to a large extent.