| GREEN ENGINE TECHNOLOGIES |
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GREEN ENGINE |
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Technical Features Compared to conventional piston engine operated on four phases, the Green Engine is an actual six-phases internal combustion engine with much higher expansion ratio. Thus it has six independent or separate working processes: intake, compression, mixing, combustion, power and exhaustion, 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. |
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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, 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, and the pump loss which consumes the part of engine power is eliminated. Also fuel measuring facilities are predigest, and parts are saved.
As a tangential air duck is between combustion chamber and compression chamber, a very strong swirling which could last until gas port opened can be formed while air are pumped into the combustion chamber. Consequently, the air-fuel mixing and the combustion process can have a satisfying working condition.
This greatly revolutionary innovation can provide the most suitable compression ratio for the engine whatever operation mode it works on with burning variety of fuels. Therefore, an excellent combustion performance is attained.
Direct fuel injection can provide higher out put and torque, while at the same time it also enhances the response for acceleration.
Since the independent air-fuel mixing phase is having enough time for mixing air and fuel under strong swirling and hot situation, the engine is capable to burn any liquid or gas fuels without modifications. An ideal air-fuel mixture could delete CO emission. Also centrifugal effect came from both strong swirling and rotation of the burner makes the air-fuel mixture more dense near the spark plug, it benefits to cold engine starting and managing lean-burning, and allowing the engine use of mass control for output.
The shape of combustion chamber herein can be designed as global as possible. Thus a lowest surface-to-volume ratio is obtained, and the engine is having less heat losses and high combustion efficiency.
Due to the independent combustion phase, compared to the conventional engine which performances lack of efficient combustion time resulting in heavy CO emission and low fuel usage rate, the Green Engine has a sufficient controllable combustion time to match any fuels.
The fuels can generate more energy while the combustion is occurred on the constant volume. Also the constant volume combustion technology can allow the engine to have a stable combustion when the lean-burning is managed. Moreover, more water can be added in to make the much higher working pressure and drop down the combustion temperature, so power is added; heat losses and NOx emissions are decreased.
The Green Engine operates on the multi-power pulses with a small volume of working chamber contrasted to the conventional engine dose on the single power pulse with a large working chamber. Obviously a small volume of chamber only needs little space, resulting in compact structure and limited size. Also a small amount of air-fuel mixtures being ignited on each power pulse can greatly cut down explosion noise.
Because the burner, which is made by high heat resistance and low expansion rate material, such as ceramic, operates without cooling, an relatively high working temperature can eliminate the quenching zone which is main source of HC emission, and can greatly reduce the heat losses in the combustion chamber.
High expansion ratio can make the burned gases to release much more power, in other words, the waste gases while they run out 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.
This is another greatly 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 seal system with less friction.
As major moving parts, vanes, which are counted in little mass and operated symmetrically, the performance of the engine is very smooth got away from vibration.
Use of modular design is the best way for engine mass production, thus stacking of rotors easily extends range of available power.
There is only a few dozens of parts which can be easily manufactured in the engine structure, comparison with modern piston engine more than 1000 parts. It suggests that the cost will be very low. Also, due to the compact structure the package and the weight of the Green Engine will be only 1/5 to 1/10 of the regulars on same output. |
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