The Shell Eco-Marathon is all about efficiency. The international student teams have to drive as far a distance as possible on as little fuel as possible. During the race, the hydrogen consumption is measured to see how much fuel is used. In combination with the distance travelled, it is possible to calculate how many kilograms of hydrogen are consumed per unit of distance. The results are then converted to petrol and presented on the scoreboard. Naturally, the team with the lowest consumption wins. All teams are fighting a tough battle in the field of innovation and show the world how far we have come with alternative fuels and what is possible in the Automotive industry. This year, the good result of 893 kilometers per liter of petrol will have to be surpassed. We strive for this by applying new techniques to drive more kilometers with less fuel. This includes making the car lighter, applying the most efficient driving technique possible during the race and limiting energy losses in the car, such as rolling resistance and air resistance, but also the losses that occur when converting hydrogen into electricity.

Classes

The Shell Eco-marathon has two different classes: the 'Urban Concept' class and the 'Prototype' class. In the first class, where Hydromotive is competing in, there are more rules to keep in mind. This way, a scenario that is simular to the real world is created. 

Rules

The rules of the Shell Eco-marathon Urban Concept class are a small book that the team and the car must adhere to. Some rules are self-explanatory, while others affect the complete design of the vehicle. For example, the car must have two doors where one was already sufficient three years ago. In addition, the car, excluding the driver, may weigh a maximum of 225 kg. The driver must weigh at least 70 kg, if he or she weighs less, ballast must be taken along as compensation.

Furthermore, there are requirements to the size of the vehicle. The maximal length is 3500 mm, the width needs to be between 1200 and 1300 mm. The heigth can be a little tinier: 1000 to 1300 mm. The car need to be 100 mm of the ground. 

This year, the tires of the car are different than last year: motor tires are not allowed any more. The tires should have a flat profile, so they are simular to cars who are driving on other fuels. 

To guarantee the safety of all competitors during the race, there are safety requirements. A driver must be able to get out of the car within ten seconds. A hydrogen gas detector need to be installed in the back of the car to warn the team about possible hydrogen leaks.