
Reg Hardware have published a review of the Peugeot 508 Active e-HDI micro-hybrid. 'In simple terms, micro-hybrid means a start-stop that's been at the Shredded Wheat. In the 508, the system - called i-StARS (Starter-Alternator Reversible System) - consists of a 2.2kW starter-generator and a set of ultra-capacitors which provide a boost to the 12V battery. i-StARS can apparently restart the engine in 400ms or twice as fast the standard starter motor, which only comes into play when you first turn the 508 on. As well as guaranteeing low-temperature performance down to -5°C, the capacitors ensure that constantly restarting the engine doesn't drain power from the other electrical systems. The system also incorporates a reversible tensioner to reduce vibration during restarts.'








