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Kia ISG (Idle Stop & Go) System; How It Works?

New Kia ISG (Idle Stop & Go) system offers up to 15% fuel savings!

One of the newest advances in improving fuel efficiency and reducing emissions in vehicles is the stop-start system.

Simply put, the engine will shut off when the car is idling, resulting in the desired efficiency and emissions improvements.

This is a particularly great feature for people who drive in larger cities or parts of the world where traffic jams and frequent traffic lights are a way of life.

This type of system is found in hybrid electric vehicles, as well as in a few that do not have a hybrid electric powertrain.

Kia has had an eye on eco-friendly technologies for a while now, which is why they introduced their ISG system (Idle Stop and Go).

Apart from that, they are also busy developing hybrid, fuel cell and electric vehicles for volume production in the next decade.

How exactly does ISG work?

Kia’s ISG system automatically shuts off the engine when the vehicle is stuck in traffic, immediately starting it again when the driver needs to move.

Driving in the city where the traffic is heaviest means having to stop and start on a pretty consistent basis.

The addition of the ISG system can cut fuel consumption and emissions by as much as 15%. A combination of different driving conditions still adds up to a fuel savings of around 6%.

The ISG system included in the new cee’d comes with a smart starter motor that is linked to an upgraded ECU. Its job is to monitor the status of the car so that it can recognize when it has come to a stop at lights, etc.

The ECU uses information from all the cars control systems to decide of the engine should be switched off.

When the car accelerates, a new smart high efficiency accelerator suppresses electric power demand, thus charging the battery when the car decelerates.

In the event that the battery drops below 75% of maximum or doesn’t have enough juice for the next start-up, the ISG system will be aborted.

When the car is stopped, depressing the clutch pedal will cause the engine to restart automatically.

What that means is that by the time the driver is ready to select first gear, the engine is up and running.

The ISG system is available in a number of different Kia models.

The system was first used in the 2009 cee’d models in Europe, but has now spread to the Venga minivan and Picanto small car.

The hot-selling Soul crossover and Rio sub-compact car are the US Kia models that feature the fuel-saving ISG system. [Image credit: Nzoncars]

When Does ISG Stop Working?

Kia says that the Idle Stop & Go (ISG) system does not operate in circumstances where there is risk of excessive strain of the car’s battery.

These include extremely cold weather conditions and where the engine temperature of the vehicle is not sufficient.

Part Of EcoDynamics Brand

The eco-friendly stop and go system is a part of the carmaker’s EcoDynamics brand that helps consumers identify Kia’s most fuel-efficient vehicles.

The EcoDynamic sub-brand includes the following technologies:

1. ISG (Idle Stop and Go) technology which lowers fuel consumption and reduces CO2 emissions when stationary.
2. Gearshift indicator which advises on the most fuel efficient points to change gear ensuring minimal engine wear and tear.
3. Low rolling resistance tires that reduce fuel usage through less road friction.

- See more at: http://www.kia-world.net/kia-isg-idle-stop-how-it-works/#sthash.cKRPHcfX.dpuf