New Stop-Start system launched

PSA Peugeot Citroen is set to incorporate a second generation Stop-Start system in its models that will help slash emissions by 5g per kilometre on average.

The new micro-hybrid i-StARS system, developed by automotive technology firm Valeo, will be launched in the third quarter of 2010. Unlike its predecessor, the i-StARS' control electronics are integrated into the electrical system.

It will be incorporated with the HDi diesel engines of the Peugeot and Citroen brands for both manual and automated manual transmission models. The firm aims to equip a million vehicles by 2013.

A car's engine will be automatically cut off at a red light or in a traffic jam and restarted when the accelerator is pressed, reducing CO2 emissions by 5g per kilometre on average and up to 15% in congested urban traffic.

i-StARS kicks in even before the vehicle comes to a complete halt, cutting off when the speed drops below 8km/h with an automated transmission and 20km/h with a manual transmission.

Valeo's technology ensures the engine is quiet and does not vibrate when it re-starts within 400msec, even if the driver suddenly changes his or her mind about stopping.

It also saves more fuel as the cut-off phases are longer and more frequent than with other systems.

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