Revealing KERS in F1
spirit for economize energy and green environment, has now entered to the F-1. This is marked with a plan of FIA (Federation Internationale d’Automobile) use KERS next year (2009). KERS, Kinetic Energy Regenerative (can also Recovery) System is taking more wasted energy when braking the car. In this way, the fuel consumption becomes more economical. Waste gas emissions, especially CO2 can be also reduced.
When the car braking, engine still running. Energy generated in machine is not used optimally because the car slowed or even stopped total. Means that the output waste useless. Waste form of energy or movement lap engine component called the energy kinetic. Energy that is captured stored and later used to run vehicles.
There are two ways of utilizing energy kinetic, namely mechanical and electrical. Mechanical, is using the flywheel. While electrical, using energy from the engine power to be changed (using the generator), and stored in the capacitor or battery. And next the engine is used to help run the vehicle, for example accelerated. Because the two sources of energy called a hybrid. In the F1, KERS offered Flybrid mechanical work. The engine energy that wasted when braking the car stored in a flywheel of energy kinetic or called lap. The future of energy is used again when gas pushed.
Simple and Practical
KERS actually already developed by many automotive companies. Development led to the recovery of energy electrical. Therefore, when the FIA has the use of KERS, some F1 teams to test direct-try. In fact, each of the F1 teams uses their own KERS system. For example, just as a BMW. As a result, there were incidents, mechanical BMW center stung when touch the side pot and hold the wheel while training.
According Markuus Duesmann, Head of Transmission BMW, the mechanic atung because the resulting voltage AC system KERS car high. After review, BMW KERS control unit turns the high voltage capacitor that came on the 12 volt system used car. Voltage is flowing through the column and chassis made from carbon.
FIA choose the main factor because mechanical KERS package size and more compact than the electrical version. Weight of the entire unit is only 24 while the volume of 13 liters volume. This condition is considered to be very fit for F1 cars.
Mechanical KERS will be used in F1 and created by Flybrid from the UK. Energy savings that can be created from the tool company that is about 400 kilo joule spring lap. When converted again with the same 80 hp or 60 kW for 6.67 seconds. When more simplified, a 60,000 Joule spring second.
Flybrid claim some experts doubt about the energy and automotive. According to them, the energy average of gas containing 39.5 Mega Joule / liter. Therefore, claims 60 kJ, with the same burning 0.00151 liter or 1.5 cc / sec were too excessive. The fuel may not deliver energy 39.5 MJ / liter, and so converted into mechanical energy. Energy experts predict, these tools can only save energy 3kW for 20 seconds.
KERS electrical already widely used at this time by car to the public company, the system still Flybrid less efficient. According to Luca Marmorini’s Toyota F1, Toyota KERS system on the hybrid sport car, the Supra has won the endurance race at Tokachi, Japan is able to restore the energy lost up to 70%. Flybrid mechanical system while only 20%. Therefore, also, he KERS rate Flybrid working with the Totorak and Xtrack less high tech even primitive. In fact Flybrid has award winning, “Engine Innovation of the Year” in Köln, Germany years ago for this KERS
In fact, the calculation is made based on the F1 engineers, the use of KERS has not been able to accelerate the time per lap in significant. The time available to take the energy is 6.5 seconds per lap library. If there are any, can only be faster 0.1 – 0.3 sec / lap. That is not yet taken into account the distribution of weight and size of the packaging. However acknowledged, with the KERS, the opportunity “overtake” bigger is better because traction especially when the car accelerated again.
How to Work
KERS electrical used by car company at this time, energy taken from the wheel. Furthermore, energy is stored in the battery. Energy from the Battery is used to rotate the electric motor. Electric motor is used to help the main engine for accelerate the car or the equipment, such as AC and other electrical. Another way that is quite interesting is adopted as Volvo, with system ISG, (integrated starter-generator). Starter and generator units are the same. While machine working it is turned on and the start the motor when engine is starting the generator to produce electricity.
In the system created by Flybrid, major components of flywheel and CVT (continuously variable transmission) installed between the transmission and rear axle of wheel. If the car braking, the comparison of CVT lap speed flywheel is 6: 1. Flywheel rotates faster and save energy from the engine that is not fully used to run the car. Once the gas deep push, the CVT ratio now turn the flywheel to the transmission channel energy to strengthen the traction or speed acceleration. On Flybrid, lap flywheel to store energy to reach 64,500 rpm.
Although KERS Flybrid oke votes for energy recovery, some experts are still worrying security problems. The round of the flywheel is very high, the bearing (bearing) timeworn fast, and fall can cause the metal fraction. Best Flybrid, security aspects are considered first. Therefore also, flywheel made of carbon and put in a strong steel tube.
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