Peugeot 908 introduces HDi FAP

During the last Le Mans Series 2008 race at the Silverstone Circuit, Peugeot Sport introduced the 908 HDi FAP concept model, equipped with a hybrid kinetic energy recovery system. Peugeot gave clues about what could be its weapon in durability racing with the silver gray 908 HY, but its use will depend on future regulations for cars in the LMP1 category.

HY technology provides recovery and storage of some of the kinetic energy released by the vehicle during braking. In a non-hybrid vehicle, this energy is lost in the form of heat dissipation in the brakes. The energy available in this way provides an increase in the efficiency of the vehicle in two ways:

1. With the increase in performance for the same energy value consumed by using hybrid mechanical energy in addition to the thermal motor
2. By reducing the fuel consumption while maintaining equivalent performance thanks to the hybrid mechanical energy made available.

The system, which equips the concept model, consists of three main elements:

1. An electric motor-generator with a power of 60 kW placed in place of the starter and operated via a gear chain
2. Batteries that ensure the storage of energy through 600 lithium-ion cells, 6 of which are grouped in the interior in the original battery and 4 of them are located in the left bottom.
3. A power electronic circuit that provides control of the energy flow between the batteries, the engine and the generator. The box of this assembly is located on the back of the front left fender

The 908 HY can move in three different ways:

1. Only in electrical mode (for example, when the pit enters the stop path)
2. Only in thermal mode.
3. Using 2 engines together. For example, in one tour of Le Mans Track, the system will collect energy for 20-30 seconds.

The pilot will be able to use this collected energy as follows:

1. In the form of additional power usage of 60 kW (80hp) automatically at re-accelerations or via a boost activated by the pilot's command (“push to pass”) for about 20 seconds each round.
2. In the form of reducing consumption for the same performance level thanks to the available hybrid mechanical energy estimated at 3% to 5%.

Peugeot Sport Director Michel Barge: “The hybrid 908 HDi FAP presentation, which is part of our endurance program, is primarily a sporty challenge, but also sees the Peugeot brand auto racing as a research and development crucible. Thus, the use of innovative HDi FAP technique in races, the use of hybrid versions in a wide range of endurance races will create a great opportunity for Peugeot to develop serial cars. However, the use of this technology in the 2009 races will depend on the regulation to be published by the Western Automobile Club. ”

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