Engine

The engine is the power source of the car. Motor selection and tuning is important in terms of weight and force.

 
The choice of engine fell on a Suzuki GSX-R 600, the same type of engine as last year. This is a motorcycle engine usually located in Suzuki's GSX-R models.
Even if the engine purchased, is very much to be improved and changed. Motorcycle Engines is not designed for lateral forces, which it is
much of in a race car. This presents a challenge for lubrication of the engine. The lateral g-forces makes the oil to accumulate on one side of the engine and 
the oil sucktion system will suck air, which causes the engine to crash. We solve this by using a system called dry sump, and acts as a
external oil tank that ensures constant oil pressure and oil flow. The same problem arises when it comes to the gas supply. It is solved by filling the
the fuel tank with a special type of foam. Petrol lies within the foam and is held in place in the curves, but still flows through over time.
 
The system transmitting power from the engine to the ground - or drivetrain - offers many challenges. The engine is basically designed for high speeds and provides about 110 hp. Formula Student requires that the engine's air intake is no larger than 20 mm, in addition to that the racing track we compete on is not designed for high speed. Therefore, we remove some gears to save weight, and dimension the drivetrain as low as possible by the same reason. We are also working to dimension the exchange of gears so that it's tailored to our car. As material we have selected steel on the drivetrain, which has a high reliability. When the motor powertrain is dimensioned and optimized the engine will provide just below 100 hp and the car will have a top speed of around 120 km/h (75 mp/h).
 
As mentioned above, the engine has an air intake restrictor of 20 mm. To compensate for this, we design an air box between the air intake and the engine. This acts as an air buffer, thereby limiting some of the power loss by sudden acceleration. The location of the air intake is also essential. There must be a good supply of air and it must not compromise the aerodynamics. To meet these requirements, we are likely to choose to apply intake method, thus "cracks" in the body. To optimize the motor we dimension our pistons, camshafts and intake and exhaust geomertry ourselves. That way we can adjust engine characteristics for our purpose. The engine parts is simulated in advanced software, which gives us good data to make decisions on.
 
All these improvements and adjustments will hopefully mean that we get a powerful and reliable motor when we stand at the starting line at Silverstone this summer!

 

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