Valeo’s electric supercharger targeted for 201516 production SAE International

17 Фев 2014 | Author: | Комментарии к записи Valeo’s electric supercharger targeted for 201516 production SAE International отключены
August Electric Vehicle

Valeo’s electric supercharger for 2015-16 production

Standardized including rotor, stator, and are used in Valeo’s electric (shown) to reduce cost and manufacturability.

The electric supercharger is being designed for 12-v (1 kW) to (7 kW) architectures for light passenger applications.

Engine downsizing with forced induction is one of the trends in the global auto with turbocharging typically the method of choice. French Valeo will soon put a new on the trend, as it prepares to launch of its new electric supercharger in the 2015-2016

Valeo engineers see the e-supercharger, a low-inertia switched-reluctance motor, as a key for hybrid vehicles. They the technology can address the low-speed lag issues associated with engines.

“The electric supercharger is a that has a very fast time—going from idle to rpm in less than 350 ms,” Pierre-Emmanuel Strohl, Valeo’s Marketing Director of Powertrain at a media briefing in late at the company’s North American in Troy, MI.

While Strohl did not Valeo’s first customer for the he said various evaluation have been under way various OEMs. Ten automakers paired the e-supercharger and its fully electronics with turbocharged engines. Six paired the product a turbocharged diesel engine, and OEMs evaluated it with aspirated gasoline engines.

compared the product’s benefits, additional low-rpm torque, conventional turbo systems. He that a single-stage turbocharger is well adapted to light to 30% cubic capacity reduction keeping the same power For instance, by doing that you can shift from a 3.5-L V6 aspirated engine to a 2.4-L turbocharged engine,” Strohl, an engineer, told AEI .

But downsizing by 50%—going from a six-cylinder to a 1.8-L 4-cylinder, for alters the performance picture, when longer-ratio vehicle is part of the equation.

“That’s the why you need another device for torque, he explained. It could be a turbo architecture. It could be kind of hybrid with motors having the maximum at low revolution.

Or it could be a two-stage with one turbo and one supercharger—either on the belt or electrical,” Strohl

Supercharging Ford’s 1.0-L

Valeo technical specialists completed advanced engineering on a range of electric superchargers. demonstrations have addressed engine types and sizes, naturally aspirated engines 1.0-L to 2.4-L and turbocharged and diesel engines from to 4.0-L.

The most visible involving Valeo’s electric is the HyBoost vehicle electrification led by Ricardo. When the multipartner started, the U.K.’s Controlled Technologies (CPT) was the electric supplier. However, with the 2011 acquisition of CPT’s Torque Enhancement System Valeo added the electric with switched reluctance technology to its powertrain portfolio.

For the project vehicle, engineers the 2.0-L naturally aspirated, 4-cylinder gasoline engine in a Ford Focus with a 143-hp 3-cylinder EcoBoost The demonstrator car employs a slew of technologies, including several products: StARS (trademarked) system, a floating voltage recovery system with and dc/dc converter, gasoline EGR system, an air intake module embedded water-cooled charge-air as well as a cooling module.

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Strohl said that the technology demonstrator improved the fuel economy in the standard driving cycle to between 41% and 52% compared to the non-electrified base

Low-inertia, switched-reluctance motor is key

technology demonstrators include a car with a 2-kW, 12-v supercharger on a two-stage architecture. driven on a real road cycle that includes a mix of roads, city streets, and the vehicle’s electric supercharger has an boost duration of 7 s with an boost frequency of 5 boost/km, to Strohl.

In addition to 12-v vehicle Valeo’s electric supercharger is with up to 27-v systems ultracapacitors, and the electric supercharger is being developed for use with architectures.

The key component of Valeo’s 4 kg lb) electric supercharger is its switched motor.

“Switched reluctance technology has a rotor with low inertia. That’s the reason why we are to go from idle speed to the speed of the compressor wheel rpm) in less than 350 said Strohl.

In the coming use of supercharger technology is forecast to dramatically.

Using third-party Valeo planners expect the number of twin- and 3-cylinder in the European market will from 900,000 units in to 5 million in 2019 with power increasing from 47 to 63 kW/L.

“It also means 60% of the 2- and 3-cylinder in 2019 in Europe will be or supercharged compared to 20% in 2011,” Strohl.

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