SKF unveils stop-start tech for two-wheelers

SKF Ltd is set to be the first supplier of stop-start technology for two-wheelers. The component major has introduced StopGo – an automatic stop-start system for motorcycles and scooters. SKF says the new solution lowers CO2 emissions, and improves fuel economy by six to 10 percent, based on riding conditions.

Harsha Kadam, director – Global, Two-Wheeler business, SKF India, told Autocar Professional that it can be further developed to offer ABS (anti-lock braking system) and perhaps even tyre pressure monitoring.

The StopGo can be customised as a ready-to-fit unit which can be assembled by OEMs and as a retrofit for a wide range of makes of two-wheelers already on the road. The system can be applied to a wide variety of motorcycles, whatever their engine size. The technology was developed by SKF India with input from the mechatronics division of SKF France.

When the vehicle stops at a traffic signal, the StopGo system shuts off the engine after a predetermined but programmable time. It restarts the engine when the throttle is turned.

SKF StopGo is an integrated sensor-bearing solution that performs a bearing function, speed sensing and stop-start function. The unit fits into the hub of the front wheel, like a standard bearing, and is connected by a plug-and-play connector to a mating connector attached to the engine stop-start electronics. As well as for sensing the speed for the stop-start function, the speed sensing in the SKF StopGo provides normal speed data for digital tachometers, which are becoming more preferred to analog systems in new two-wheeler models. SKF says the new solution offers weight saving of up to 60 percent as compared to the suite of existing mechanical components needed for the front wheel bearing and speed sensing.

StopGo trials have been conducted in premium bikes like the TVS Apache, Bajaj Pulsar and Hero Karizma. Kadam says that work is on to offer the StopGo solution also to entry-level bikes which do not have an ECU. The first StopGo-fitted bike is expected to roll out in the first half of 2012. Incidentally, Bosch is also developing stop-start tech for two-wheelers.