landspeed -
I always plug this as a comparison because someone is *trying* to create a bolt-on mild hybrid :
Retrofit Hybrid-Electric System
http://www.sigmaautomotive.com/elect...trocharger.php
Quote:
The Electrocharger replaces the vehicle’s alternator and battery charging system and gets most of its energy during vehicle braking, while additional energy comes from the engine while the vehicle is at cruising speed. The Electrocharger functions as an alternator at all times, when it is not used as a motor, to provide acceleration assistance to the engine. Power for the vehicle electrical system is provided by a DC/DC converter that can output power for the current 12 volt or forthcoming 42 volt systems.
The Electrocharger system is comprised of a rugged high speed computer-controlled electric motor that is mounted to the vehicle’s engine with a purpose built aluminum bracket. Power and torque from the electric motor is transferred to the engines’ crankshaft via a specialized toothed drive belt that transfers the torque from the electric motor through a vehicle specific sprocket ratio.
The on-board energy for the Electrocharger comes from the Super Capacitor Battery Pack (SCBP) that provides up to 600 amps at 48 volts to the electric motor for acceleration durations. The SCBP is contained in a sealed module that has color coded connectors to ensure proper connectivity. The SCBP is able to withstand the substantial in-rush of current during regenerative braking, maintain the standard vehicle battery state of charge and prolong the life cycle of the SCBP energy storage batteries.
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But, they can't get it to work. It has been in development for over two years,
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CarloSW2