Idlestopjärjestelmät

Idlestopjärjestelmät, often translated as idle-stop systems or automatic start-stop systems, are designed to reduce fuel consumption and emissions in vehicles by automatically shutting off the engine when the vehicle is stationary. When the driver applies the brake pedal and the vehicle comes to a complete stop, the system intervenes and stops the engine. As soon as the driver releases the brake pedal or presses the clutch pedal (in manual transmission vehicles), the engine restarts quickly and smoothly.

These systems are typically integrated into modern vehicles, especially those with automatic transmissions, to enhance fuel efficiency in urban driving conditions where frequent stopping and starting occurs. The technology relies on a more robust starter motor and a higher-capacity battery to handle the increased number of engine starts. Many idlestopjärjestelmät also incorporate advanced alternator management to optimize battery charging. While primarily aimed at saving fuel, the reduction in idling time also contributes to lower exhaust emissions, particularly in city environments. Drivers can usually disable the system via a button if they prefer the engine to remain running.