Analysis

Bosch & PSA Peugeot Citroën optimise vehicle range and safety

30th October 2013
Nat Bowers

Along with other partners, Bosch and PSA Peugeot Citroën are cooperating on the Optimal Energy Consumption and Recovery research programme. Available for all types of motors (gasoline, diesel, hybrid and electric), two new technologies developed for the OpEneR project are designed to improve the range of future hybrid and electric vehicles and optimise driver safety and comfort.

Navigation data extends road vision and saves 15% energy

OpEneR now includes navigation data for predictive driving adaptation. Based on topographical data such as slopes, bend radii and infrastructure data, the driver's vision is considerably extended with a preview of the road. Road signs and speed limits are also indicated. Navigation data offer efficiency gains, with energy savings of up to 15 percent. The engine management system performs a dynamic calculation of the energy required from the electric motors, with data from the road preview feature.

Optimise vehicle safety and comfort with video camera and radars

Sensors such as video camera and radars, which help with driving comfort and safety, are used to detect objects, other cars and pedestrians, as well as to recognise road signs, and also help bring down consumption. For instance, on the basis of the journey to be covered, a computer determines the vehicle's future speed curve, by integrating data going beyond the next bend. The Adaptive Cruise Control function automatically regulates the vehicle's speed and brakes before entering the bend, built-up areas and speed limited areas, as well as in the presence of obstacles and slower vehicles. This function means greater comfort and safety for the driver, who can concentrate on the wheel and the surrounding traffic.

Either by coasting or by braking energy recovery for hybrid and electric vehicles, OpEneR enables the driver to reduce energy consumption. With consumption down by between 10 percent and 15 percent, more than 15,000 km of intensive testing have been carried out to date in real driving conditions and on varied road profiles. The two partners have thus developed three technological innovations:

  • An electric drive train based on two electric motors, offering 4-wheel drive with zero CO2 emissions;
  • The new generation Stop & Start for coasting;
  • ESP hev braking for energy recovery at braking and battery recharging, accompanied by the iBooster which can amplify the vacuum braking force.

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