Mobility Solutions

Boost recuperation system The hybrid for everyone: Bosch's 48-volt system makes sense even in compact vehicles First generation to be production-ready by 2017, new second-generation prototype to also help drivers park

  • Cuts fuel consumption by 15 percent and enables boost function
  • New function: all-electric driving in stop-and-go traffic
  • New function: electric, automatic parking - via app and key
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  • September 04, 2015
  • Mobility Solutions
  • Press releases
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press release

Frankfurt/Stuttgart, Germany – Be honest: did you think about choosing a hybrid the last time you bought a car? You will the next time. That is because Bosch has developed a hybrid powertrain that makes economic sense even in smaller vehicles. The system will go into production with the next vehicle generation and costs just a fraction of today's hybrid systems. “The boost recuperation system is the hybrid for everyone,” says Dr. Rolf Bulander, member of the board of management of Robert Bosch GmbH and chairman of the Mobility Solutions business sector.

At the same time, drivers benefit from the well-known advantages of a hybrid, which make the car significantly more fuel-efficient. This makes it possible even for modern vehicles to operate 15 percent more economically, not only in controlled tests, but also in everyday driving situations. In addition, gasoline and diesel engines are capable of more dynamic acceleration thanks to the electronic boost feature. The electrical powertrain provides the combustion engine with an additional 150 Newton meters of support during acceleration. That corresponds to the power of a sporty compact-car engine.

Unlike conventional 400-volt hybrids, the system is based on a lower voltage of 48 volts and can therefore make do with less expensive components. Instead of a large electric motor, the generator has been enhanced to output four times as much power. The motor generator uses a belt to support the combustion engine with up to 10 kW. The power electronics forms the link between the additional low-voltage battery and the motor generator. A DC/DC converter supplies the car's 12-volt on-board network from the 48-volt vehicle electrical system. The newly developed lithium-ion battery is also significantly smaller.

“The entry-level hybrid with 48 volts is going to become an attractive option for drivers in Europe, North America, and Asia,” Bulander says. Bosch expects some 4 million new vehicles worldwide to be equipped with this type of hybrid powertrain in 2020.

Second-generation prototype: parking at the press of a button
At the IAA 2015, Bosch will also be presenting a new second generation of the entry-level hybrid that is currently still in development. In the prototype, the more powerful motor generator is connected directly with the powertrain rather than with the combustion engine.

This allows the entry-level hybrid to provide all-electric driving even at low speeds – such as in stop-and-go traffic – in addition to immediate electric support for a short period of time.

The new hybrid makes it possible to include in compact cars a function that will celebrate its debut in premium vehicles at this year's IAA: a remote-controlled parking assistant that allows drivers to direct the parking maneuver from the curbside. The fully automatic parking assistant steers the vehicle into even the tightest parking spaces and garages safely and conveniently, without any stress or hassle.

The assistant uses ultrasonic sensors and is based on the fully automatic parking system found in vehicles with an automatic transmission. Thanks to the built-in electric motor, the system is capable of accelerating by itself and independently shifting between forward and reverse gears. And because the parking process is started by pressing a button on the ignition key, drivers do not even have to be in the vehicle. Bosch has also developed a smartphone app that allows drivers to operate the parking assistant from outside the vehicle.

Contact person for press inquiries:
Florian Flaig,
phone: +49 711 811-6282

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Mobility Solutions is the largest Bosch Group business sector. In 2015, its sales came to 41.7 billion euros, or 59 percent of total group sales. This makes the Bosch Group one of the leading automotive suppliers. The Mobility Solutions business sector combines the group’s expertise in three mobility domains – automation, electrification, and connectivity – and offers its customers integrated mobility solutions. Its main areas of activity are injection technology and powertrain peripherals for internal-combustion engines, diverse solutions for powertrain electrification, vehicle safety systems, driver-assistance and automated functions, technology for user-friendly infotainment as well as vehicle-to-vehicle and vehicle-to-infrastructure communication, repair-shop concepts, and technology and services for the automotive aftermarket. Bosch is synonymous with important automotive innovations, such as electronic engine management, the ESP anti-skid system, and common-rail diesel technology.

The Bosch Group is a leading global supplier of technology and services. It employs roughly 375,000 associates worldwide (as of December 31, 2015). The company generated sales of 70.6 billion euros in 2015. Its operations are divided into four business sectors: Mobility Solutions, Industrial Technology, Consumer Goods, and Energy and Building Technology. The Bosch Group comprises Robert Bosch GmbH and its roughly 440 subsidiaries and regional companies in some 60 countries. Including sales and service partners, Bosch’s global manufacturing and sales network covers some 150 countries. The basis for the company’s future growth is its innovative strength. Bosch employs 55,800 associates in research and development at 118 locations across the globe. The Bosch Group’s strategic objective is to deliver innovations for a connected life. Bosch improves quality of life worldwide with products and services that are innovative and spark enthusiasm. In short, Bosch creates technology that is “Invented for life.”

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PI9051 - September 04, 2015

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