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CPT developing 48-volt electric supercharger for micro-mild hybrids

Green Car Congress

Controlled Power Technologies (CPT) is developing a 48-volt version of its 12 volt electric supercharger based on its variable torque enhancement system known as VTES. At 48 volts, a VTES electric supercharger will transform 7kW of battery power into a highly boosted charge of air for downsized gasoline and diesel engines.

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Eaton contributing several components to DOE SuperTruck II program

Green Car Congress

The Eaton 48-volt mild hybrid accessory drive captures energy while driving and is used to keep the sleeper cab comfortable overnight without idling the engine. Additionally, Eaton’s new engine decompression brake can help OEMs with regulatory compliance.

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CPT launching water-cooled electric supercharger for commercial diesel engines

Green Car Congress

Cobra could enable a 5–10% reduction in CO 2 emissions when implemented in conjunction with engine downsizing and down speeding strategies, and potentially more when used in conjunction with alternative fuels, according to CPT. Cobra’s windings have been optimized for 24 volt operation.

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CPT VTES Electric Supercharger Selected for Two Projects

Green Car Congress

When applied to a radically downsized 1.2-liter liter turbocharged engine, VTES delivers in excess of a 50% increase in torque at engine speeds below 3,000rpm, more than compensating for insufficient power from the exhaust turbine. More than 90% of the available torque is delivered in less than a second. Compared with a 1.6-liter

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ADEPT project to apply gasoline engine HyBoost system to diesel; 48V architecture; full hybrid fuel economy at much lower cost

Green Car Congress

This combined combined aggressive 50% downsizing of the engine with an electric supercharger for transient low-speed performance and a 12+X volt micro-hybrid stop-start and energy recuperation systems. It is capable of operating in exhaust temperatures up to 850 °C, at speeds up to 60,000 rpm and delivering a peak power of 2 kW (@12V).

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CPT presenting two papers at SAE World Congress on SpeedStart and TIGERS for 48V mild hybrid systems

Green Car Congress

Sixty volts is defined by the United Nations Economic Commission for Europe (UNECE) regulation R100 as the boundary between low and high voltage in a direct current circuit, and so is a critical point where a step change in system cost can be identified. Rick Quinn, senior manager for advanced engineering.

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Calls for an international 48V electrical standard for vehicles; looming WLTP implementation

Green Car Congress

This means that in addition the power demand is more difficult to achieve with engine downsizing and transmission down-speeding alone. The displacement of high wattage loads to a more efficient 48 volt network is expected to be the next step in the development of a new generation of low voltage mild hybrid vehicles. Click to enlarge.

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