In the wake of the price rise of petroleum, four students of the Saveetha Engineering college in the Chennai city have developed a conventional four-stroke internal combustion engine which eliminates the use of petrol and diesel and runs on compressed nitrogen gas.
Mr.Dhanasekar, a final year Mechanical Engineering student, who is one of the four inventors said that the internal combustion engine operated on conventional fuels, such as diesel causes pollution because of combustion of fuel.Even the use of alternative fules, such as natural gas results in exhaustion of gas containing pollutants and noxious fumes. But a non-combustible pressurized gas operated engine would be alternative to the present conventional engine, which will be economical and more efficient, as parts like carburetor, air filter, spark plugs and water pump are removed from the engine. The pneumatic powered engine will be operated on compressed air.
Mr.S.Thamimul Ansari another member of the inventing team said that a separate tank containing compressed nitrogen gas is connected to the cylinders.In order to supply the compressed air to the cylinder, a new inlet is connected to the normally closed type solenoid volve. The timing of the valve opening during power stroke is increased using electronic control system.The infrared transmitter and receiver in the engine are provided to execute the solenoid valve during exhaust stroke.Therefore, the expanded gas from the cylinder during exhaust stroke is exhausted to atmosphere.
Mr.Sridhar another member of the inventing team pointed out that with the use of compressed nitrogen gas in the working of pistons in the engine, the use of fuel can be eliminated.
Mr.Balakrishnan, another member of the inventing team said that they had spent about Rs 60,000 to develop the invention for which they had used an 800 CC Maruthi car engine.
The young inventors have also planned to commercialise their invention in the future, so that the problems of fuel prices can be brought down.
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