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

  • Data handling important for autonomous vehicles
    December 8, 2016
    Data handling is becoming an ever-greater part of transportation and never more so than with autonomous vehicles, as Andrew Bardin Williams hears from some big names.
    Read More
  • Moxa provides clear vision for Caldecott Tunnel’s Fourth Bore
    September 15, 2014
    Caldecott Tunnel’s new Fourth Bore is utilising a bespoke high-capacity monitoring and communications network from Moxa. The Caldecott Tunnel connects Contra Costa and Alameda counties in Northern California and traditionally it has suffered severe congestion - especially during peak hours. Opened in 1937 as a twin-bore arrangement, by 1964 the increase in traffic volumes led to a third bore being added. Shortly after the third bore was opened a tidal flow was introduced with the centre bore alternating in
    Read More
  • Pollution has more than one solution
    April 7, 2014
    Professor Alexander Baklanov of the World Meteorological Organization talks to Colin Sowman about the difficulties of reducing urban pollution. The inhabitants of Beijing have recently been suffering pollution levels 20 times the World Health Organisation’s recommended limit while the European Union is revitalising its efforts to implement and enforce air quality standards. Almost inevitably much of the clean-up efforts are likely to focus on traffic planners and engineers.
    Read More
  • Time for a rethink on road user charging
    February 1, 2012
    There is no value in further US VMT charging trials, except to delay the inevitable. These trials should end after completion of the University of Iowa's National Evaluation of a Mileage-based Road User Charge. There is far greater promise in unleashing private operators to commence profitable, non-tolling services, then using these for toll assessment and collection as fuel distributors are currently used to collect fuel taxation. Bern Grush writes
    Read More

Highlighted Content