Bosch engineers are currently focusing on parallel-full-hybrid technology, in which the electric motor is positioned between clutch and transmission in the drivetrain, thus saving space. When driving long distances, electrical energy can be recuperated when driving downhill or braking, and temporarily stored in a high-voltage battery. The same applies to frequent stops and starts on delivery runs. When the truck drives uphill or starts off, this energy drives an electric motor. Delivering up to 120 kilowatts, it supports the internal-combustion engine. This reduces the engine's need for power, and thus also its fuel consumption. The electric motor is controlled by the inverter, which converts the direct current from the battery into three-phase alternating current and sets the desired torque and engine speed. The systems supplier Bosch not only develops the electric motor and inverter, but also the necessary control electronics and battery technology. The global supplier of technology and services can thus provide the entire electrical powertrain for hybrid commercial vehicles.
