Valeo offers a complete range of Stop-Start solutions, both belt driven (Valeo i-StARS starter-alternator) and starter based (Valeo ReStart reinforced starter).
What is auto Start-Stop technology in a car?
The start-stop technology automatically turns off the engine when the car stops and restarts it when the car is ready to move again.
In the city, vehicles are stationary for nearly 35% of the time (traffic jams, red lights…), with their engine’s idling needlessly. The Stop-Start system automatically switches off the engine when the vehicle is at a standstill and restarts the engine immediately, as soon as the driver lifts his foot off the brake or disengages the clutch, leading to a significant reduction in CO2 emissions.
How does the Start-Stop technology work?
Two Valeo systems, the Valeo i-StARS starter-alternator and the Valeo ReStart reinforced starter, make this automation possible. These systems are compatible with gasoline and diesel engines, and both manual and automatic gearboxes.
The Stop-Start system provides fuel savings of up to 6% in European standard mixed cycle use, and savings of up to 15% in congested city driving.
Valeo i-StARS starter-alternator: an immediate start in silence
The Valeo i-StARS starter-alternator is installed in place of an alternator. The combustion engine is started immediately and silently thanks to the belt that permanently links the system to the crankshaft. The alternator mode features a new technology that improves the electrical efficiency of the system. In addition, the integrated control electronics makes it easier to package the system on the combustion engine.
The Valeo i-StARS starter-alternator optimizes the Stop-Start strategy required by the automaker. It enables the engine to be switched off and restarted before the vehicle has reached a complete standstill. Restarting is almost instantaneous (400 msec), silent and without vibration. The system is compatible with all manual and automatic transmissions.
Valeo ReStart: the reinforced starter
The reinforced starter, Valeo ReStart, is installed in place of a conventional starter and offers better durability to repeated stopping and starting. Valeo ReStart can be adapted to all types of engines, and all engine displacements, and can also start the engine at extremely low temperatures. Its integration is not intrusive, as the system does not alter the vehicle architecture. Valeo teams are currently working on the development of a new-generation of reinforced starter that can restart the combustion engine while it is still turning. This will increase the duration and number of stop phases, contributing to increased fuel efficiency.
When you visit any website, it may store or retrieve information on your browser, mostly in the form of cookies. This information might be about you, your preferences or your device and is mostly used to make the site work as you expect it to. The information does not usually directly identify you, but it can give you a more personalized web experience. Because we respect your right to privacy, you can choose not to allow some types of cookies. Click on the different category headings to find out more and change our default settings. However, blocking some types of cookies may impact your experience of the site and the services we are able to offer.
These cookies are necessary for the website to function and cannot be switched off in our systems. They are usually only set in response to actions made by you which amount to a request for services, such as setting your privacy preferences, logging in or filling in forms. You can set your browser to block or alert you about these cookies, but some parts of the site will not then work. These cookies do not store any personally identifiable information.
These cookies allow us to measure visits and traffic sources so we can improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and your personal data will not be identified by these cookies as they collect anonymous information. Some other sites may call these “performance or analytics cookies”. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.
These cookies enable us to personalise your experience on our site with things like relevant content (e.g. videos) or products you might be interested in (e.g. based on what you previously viewed). These cookies may be set by us or by third party providers who add services/features to our sites (e.g. videos). If you would like the site to be more tailored to you, please turn these cookies on.