Chevrolet has just posted a new video featuring Chevrolet Volt integration engineer Valarie Boatman and the car coming to sudden stops on ceramic tiles. Boatman's task is to evaluate and verify the braking system on the Volt to ensure that it can stop the vehicle and keep it stable under all conditions. The Volt uses an electrohydraulic brake system developed by TRW that is based on the same technology used for the two-mode hybrid trucks. The system uses a high-pressure hydraulic accumulator to provide brake boost because vacuum is not available when the range extender is not running.
As you can see in the video, engineering in this area is not just about sitting in front of a computer screen doing calculations. The engineers spend days on end at facilities like the Milford proving ground, as well at hot and cold weather facilities, evaluating the performance on all kinds of different surfaces and during various dynamic maneuvers. For a car like the Volt, it gets particularly complicated because the system has to blend regenerative and friction braking seamlessly. Check out the video after the jump.
[Source: You Tube]