The challenges of start-stop technology

According to automotive technology supplier Dayco, the number of vehicles featuring start-stop technology will continue to rise over the next few years. The company says that it is only by incorporating such a function into a number of models in each range, that vehicle manufacturers will be able to reduce their fleet average emission levels and achieve the targets that EU legislation demands. Dayco, in alliance with Peugeot/Citroën, has developed a starter/alternator that has an auxiliary belt system w
September 9, 2013 Read time: 2 mins
According to automotive technology supplier Dayco, the number of vehicles featuring start-stop technology will continue to rise over the next few years.  The company says that it is only by incorporating such a function into a number of models in each range, that vehicle manufacturers will be able to reduce their fleet average emission levels and achieve the targets that EU legislation demands.

Dayco, in alliance with Peugeot/Citroën, has developed a starter/alternator that has an auxiliary belt system with the strength to start and restart the engine instantly when the vehicle needs to pull away, but is no wider than a standard auxiliary belt. In contrast to a conventional belt system, the patented Dayco self tensioning system (STS) maintains a balanced tension on both sides of the belt in relation to the starter/alternator drive pulley. Instead of having a tensioner on just one side of the belt system, the tensioning device connects both sides of the starter/alternator belt system.

The Dayco STS is designed to create a balance of forces between the two sides at all times, which enables the starter/alternator to seamlessly switch between its starting and charging modes to allow the vehicle’s start-stop system to function to its full potential.

The major development of this self-balancing device is the rigid connection of its pulleys, which allows it to maintain the correct belt tension irrespective of the direction of the load.

Related Content

  • Conscience versus convenience
    June 8, 2015
    David Crawford looks at new ways forward for public transport. By 2025, nearly 60% of the world’s population will be living in towns and cities, increasing their extent and density, and the journeys that people make within and between them. In response, the International Association of Public Transport (UITP) wants to see public transport’s global modal share doubling (PTx2) by the same date. “Success in 2025,” a spokesperson told ITS International, “will save 170 million tonnes of oil equivalent and 550
    Read More
  • Cooperative infrastructure systems waiting for the go ahead
    February 3, 2012
    Despite much research and technological promise, progress towards cooperative infrastructure system deployment is still slow. Here, Robert Cone and John Miles take a considered look at how and when it might come about. From a systems engineering viewpoint it looks logical and inevitable that vehicles should be communicating between themselves and with the road infrastructure. But seen from a business viewpoint the case is not proven.
    Read More
  • 90,000 e-truck charge points needed, says Scania boss
    April 28, 2020
    European auto group calls for massive increase in charging points for electric trucks.
    Read More
  • RedSpeed offers schools automated no-cost stop arm enforcement
    March 28, 2014
    School authorities in the US are turning to automated school bus stop arm enforcement to curb an astonishing number of violations. It is estimated that every year nearly 17,000 American children are sent to emergency rooms as a result of school bus related crashes. And when surveyed, 99% of school bus drivers reported that the most dangerous behaviour they encounter is drivers passing a school bus with its stop sign arm extended. Every day these drivers who violate the extended stop arm signs put at risk
    Read More

Highlighted Content