Combined Starter-Alternator Reduces Petrol Use Dow Corning is helping auto manufacturers and suppliers boost gas mileage and reduce emissions. Dow Corning's technical centres are delivering process engineering, testing and even prototyping to help customers accelerate product development and reduce time to market. Among recent fuel-saving advances is a design for a combination starter-alternator that outperforms the conventional starter and alternator as separate components. The device is at the heart of the 'start-stop' system, which conserves fuel and reduces pollution by automatically shutting off the engine when a vehicle is stationary. The system immediately and silently restarts the motor as soon as a gear is engaged; or in the case of a car with automatic transmission, whenever the driver releases the brake. In starter mode, the belt drive and low inertia of the device mean it starts three-times faster than a conventional starter and with a fraction of the noise....
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