The start-stop system can help you to save energy and thus reduce CO2 emissions. The operating principle is simple: the engine is automatically switched off when the car is stopped, for example at traffic lights, and is started automatically when you lift up the brake pedal.
1. Why are cars equipped with Start-Stop system today?
Vehicle manufacturers are using start-stop technology in their cars because of stringent greenhouse gas emission standard. Moving forward, we will be expecting to see new cars on the road with start-stop technology because it is one technological system that will improve the vehicle efficiency numbers. Singapore government will be replacing the current Carbon Emissions-Based Vehicle Scheme (CEVS) on 1st January 2018 (Read more about the new Government scheme). We will definitely be looking to see cars with start-stop system as a standard feature in them.
2. Understanding start-stop system
The technology components for the start-stop technology are rather straightforward. Start-stop systems combine smart electronic controls with a more robust battery, alternator and starter system, as compared to conventional vehicles. The smart electronics system monitors and controls many on-board systems to ensure the start-stop system works effectively and safely under all driving conditions. The battery, alternator, and starter system is designed to withstand the increased starting and electrical demands and perform seamlessly. The starter and alternator is integrated into a single unit. Some manufactures also integrate regenerative braking, resulting in even greater fuel savings, a technology that is more commonly found in the western countries.
3. How a start-stop system works
When the car comes to a stop, the engine computer (ECU) cuts the spark and fuel. When the driver lifts his foot off the brake, or engages the clutch, the engine fires back up.
Given today’s technology, manufacturers are able to build and program the car to shut down the engine, while allowing continuous operations of air conditioning and other electrically powered systems. These demands require appropriate driver controls and sophisticated start-stop electronics to monitor and control a host of unseen systems, such as maintaining hydraulic pressure in the automatic transmission or positioning the pistons once the engine stops to ensure smooth operation and rapid restart. The electrical system is also monitored to ensure that the vehicle does not turn off the engine if the battery cannot supply enough current to restart the engine and/or power the auxiliary accessories.
The start-stop function only works when …
In some cases the engine will not be switched off, for instance when …
The engine is started automatically by the system when …
4. Importance of the type of battery used
In Singapore, cars equip with start-stop system will be a standard feature. Some drivers might find it irritating, while others love it. Regardless, the minimum car battery required in a start-stop car is an Enhanced Flooded Battery (EFB) or an Absorbent-Glass Matt (AGM). A heartier battery is required to satisfy the car’s entire electrical needs with its engine off. Otherwise, start-stop is about as easy a fuel-saving technology as driving downhill.
Wondering how much you can save on a start-stop vehicle? Look out for our next blog post... Till then, be safe on the roads!
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AZ Car Battery Solutions is the first online car battery retailer that specializes in AGM and EFB car starter batteries. Whether your car has Start-Stop functions and/or using 24/7 functions in car dash camera(s), we have the battery solutions for you. We want drivers to use not only the correct battery, but also save on the battery replacement cost. Coupled with our business model, you will enjoy the highest savings and convenience.
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