By: Group Group Memebers: Wang Jiale 1O3 (leader) Daryl Chionh 1O3 Daniel Hong 1O3 Michael Liu 1O3

Problems faced by people today Lack of petrol Rising Oil Prices Waste discharged from the exhaust pipe is not made used of properly Partly caused by disrupts in the Middle East who is a major oil producer. Due to the increasing number of cars and demand for it

Our solution: The small turbine that does great things Mounted 5cm behind the exhaust pipe at the end of the exhaust pipe to harness the kinetic energy from the exhaust and the wind to generate electricity. It can be used to power small components such as the window-wiper, lights in the car and the air con blower. It is light, cheap and efficient. It makes the petrol use more efficient. Even works when the car’s engine is on but the car is not moving.

Reasons for the location of the turbine Advantages for a turbine mounted 5cm behind the exhaust pipe: - get the maximum amount of kinetic energy available from the exhaust pipe and the surrounding wind when the car is driving. (it is tested) - Air around it can cool it and prevent it form overheating. - Will not block the exhaust pipe - Easy to maintain

Colour and material of turbine Colour Grey, because:  it does not trap too much heat  does not look too bad when dirtied by the exhaust. Material Stainless Steel, because  it is light and durable  when small objects such as stones hit it, it will not be damaged too badly.

Limitations of the invention The electricity generated is only able to power built-in electronic components in the car, not external things Lubrication oil is needed to allow the turbine to turn smoothly. Regular Maintenance is required

The plan of the invention CAR Exhaust Pipe Dynamo Battery Electronic Components

How it works Turning turbine turns the dynamo which generates electricity to be stored in a separate battery, then the electricity is used by the electronic component.

The prototype The invention, when put in the market, will have different models of it built to suit different types of cars The battery used in the prototype will be the exact one used in the real invention The turbine and dynamo will be modified in the actual invention as materials to make it may only be available in factories. Materials for the prototype cost less than $20, so the real invention should be within $100, an amount affordable as an investment by majority of drivers.

Calculation (Part 1) For example… Air-con blower (Main component in air conditioner) - Uses 200 Watt motor - Running current about 17 ampere. - About 0.8% of engine power. - Which is about 0.8% of fuel consumption

Calculations (Part 2) After the calculations, it could be concluded that: -If every car’s monthly fuel consumption is 100 litres, 800 millilitres can be saved just by using the invention to power the air-con blower. - Singapore has about cars in 2010, so, if all cars in Singapore use this invention, litres of fuel can be saved monthly. (Based on the above condition)

So… Just by making the invention power the air- con blower, in Singapore, litres of fuel can be saved monthly if each car uses 100 litres of fuel per month. Furthermore the invention only costs less than $100, imagine the amount of money and fuel that could be saved!

Progress 5 th April 2011Thought of initial idea 16 th April 2011Made inventor’s log 15 th June 2011Made prototype 16 th to 24 th June 2011Testing and modification of the prototype 25 th June 2011Updated inventor’s log 29 th June 2011Made PowerPoint Presentation 30 th June 2011Met mentor 2 nd July 2011Finalized PowerPoint

References and Credits cross-continental-journey/17892/

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