Low-voltage hybrid systems

Low-voltage hybrid systems
  • Function
    Entering the world of savings and boosting

    A hybrid system of 48 volts is termed a low-voltage hybrid. It combines an electric powertrain with a conventional combustion engine, resulting in an average 15% reduction in fuel consumption and CO2 emissions. This is made possible through braking energy recuperation and start-stop coasting. In the latter case, the combustion engine turns off completely, not only when idle, but also when the vehicle is being driven if neither the gas nor the brake pedal is engaged. But the low-voltage hybrid isn’t just clean and economical; thanks to its boost function, it’s also more fun to drive. The stored braking energy boosts the torque as needed, such as when overtaking. Depending on the system, the driver has other functions available as well. One of these is electric-supported coasting, in which the e-motor’s torque helps maintain the vehicle’s speed. The low-voltage hybrid can also handle parking and driving in stop-and-go traffic on electricity alone.

  • Automotive competence
    Comprehensive portfolio and extensive expertise

    When working with automakers, Bosch brings to the table not only its comprehensive lineup of technology and services, but also extensive experience and wide-ranging expertise in all areas of automotive technology. Bosch can call on more than 40 years of experience in developing hybrid drives and offers a wide portfolio of components for hybrid and electric vehicles. This includes power electronics, electric motors, batteries, and regenerative braking systems.

    Systems competence and comprehensive know-how

    Bosch provides holistic systems competence for hybrid and electric vehicle powertrain systems. As a system provider, Bosch knows exactly what technical demands are placed on the various components and is intimately familiar with the technical relationships and dependencies within the system as a whole. This knowledge allows Bosch to put individual components together to form a functioning whole while getting the most out of the system.

    Driving innovation and technology

    As the innovation driver and technology leader in the industry, Bosch develops electric drive systems and introduces technical innovation to large-volume production contexts. Its absolute commitment to research and development helps equip vehicles with innovative technology. The world’s first parallel strong hybrid vehicle entered series production in 2010, featuring a Bosch electric drive. The parallel strong hybrid offers the advantage of simple integration of hybrid components into existing vehicle systems. In 2011, the world’s first axle-split hybrid system was put into production, offering an electric all-wheel drive system.

    Ensuring quality and reliability

    The quality and reliability of Bosch technology are crucial in bringing technologically sophisticated vehicles with electric drive systems to market. Highly robust and durable, the systems for hybrid and electric vehicles are designed to last for the vehicle’s entire service life. The high quality of these systems is based on Bosch's longstanding experience from developing and producing generators, starters, and control units.

    Global presence

    Bosch has experts in hybrid and electric vehicles close to its customers around the globe. This proximity to automakers facilitates close, flexible collaboration, saves time, and helps reduce costs. Bosch has a local presence in the European, Chinese, Japanese and North American markets with experts on hand for powertrain electrification.

    Long-term partnership

    As a partner for systems and components in hybrid and electric vehicles, Bosch supports automakers’ activities end to end, from designing new vehicle concepts and development to series production and vehicle servicing. Future product and system generations are being defined in collaboration with automakers. Bosch offers customized solutions as well as standard components.


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