Mild Hybrid Powertrain (P0, P1), a new paradigm in the agricultural equipment sector
By combining an internal combustion engine and a 48 V 20 kW electric motor, this unique powertrain is the ideal solution for agriculture which can guarantee the same advantages as a 100 hp combustion engine while optimizing fuel consumption and reducing emissions.
This is due to a smaller combustion engine and smart control of the electric boost function which sustains and optimizes diesel engine overload (during transport and work, for example).
Thanks to an internal combustion engine that is downsized to just 55 kW, this solution also avoids the need to install an SCR catalytic converter imposed by the European STAGE V emissions standards; this offers considerable advantages for specialized tractors in terms of dimensions and costs.
Same advantages of a 100 HP powertrain but with a 55 Kw internal combustion engine thanks to the 48V electric motor. Minimized fuel consumption thanks to engine downsize and smart boost function management. Optimized support for diesel engine overload issues (i.e. transport & working phases) thanks to smart boost function.
Developed to satisfy agriculture specialized applications, the Carraro 3E22 engine is also
available with a non-structural version to be applied on construction equipment machines.
It‘s designed in order to perfectly fit with the Carraro drivetrain solutions according to
T3B, Stage V, China IV, and Bharat IV emission limits. Moving up to 75Hp (55 kW) with a peak torque of 280 Nm, the 3E22 engine is thought of as a global platform adapted to suit the most severe space requirements. The peak power can be also increased to 100Hp with the combination of a 20kW PMS electric motor able to supply a boost function along with transport or working phases.
Hybrid (P2), An innovation in the field of specialized tractors
The Carraro Hybrid project marks a real turning point in the agricultural mechanization of specialized tractors.
The complex parallel-type architecture enables the power delivered to be optimized according to the various operations to be performed by the tractor. More specifically, operators can choose whether they wish to work in:
- pure electric mode: for use inside closed structures, greenhouses, and stables or for municipal applications
- diesel only: for road transportation or when not carrying/towing heavy loads
- hybrid: for transport operations when towing or carrying loads, or for heavy PTO operations
With this architecture, the auxiliary systems are managed by dedicated electric motors which serve to further streamline usage.
The new Hybrid system helps to reduce fuel consumption, eliminate emissions (in full electric mode), increase productivity, reduce maintenance costs (due to reduced use of the combustion engine), maintain the quality of crops (due to lower Co2 emissions), and reduce the level of noise and vibrations.
eTransmission (P3), for “zero impact” operating machines
Worksites and construction equipment are moving towards full sustainability. In this context, it is vital to develop solutions that allow the vehicles to operate at maximum efficiency as far as fuel consumption is concerned while reducing emissions. To meet this need, Carraro has developed a series of transmissions that integrate electric motors in order to meet legal requirements and reduce emissions whilst guaranteeing performance and productivity.
eTCH90 Long Drop
A torque converter full powershift transmission designed to become an integrated powertrain for Hybrid and Full-electric vehicles. eTCH90 can guarantee a high level of flexibility by combining compact electric motors with scalable horsepower at both Low and Hi-Voltage. Suitable for a number of machines with same size tires including telescopic trucks.
eTB220C
A transmission specially developed for full-electric based applications which can minimize power losses even at a high input rotation speed. eTB220 can create high flexibility by integrating one or more compact electric motors for multi-stage solutions. The group of integrable electric motors offers scalable horsepower and can operate at both Low and Hi-Voltage.
eAxle (P4), a range of fully integrated electrified axles
When vehicle ergonomics require maximum compactness, solutions are needed that optimize the integration of the mechanics and the drive system. Carraro has strengthened this expertise within the company, first with electric powertrains for forklift trucks, and has used this know-how to find applications in the field of construction equipment as well.
e48.16M
An axle with complete integration of electric motors with scalable horsepower and an inverter located in the central part of the axle. This architecture has been specifically designed for compact machines such as compact wheel loaders or dumpers.
EC50
Axle for counterbalance forklift trucks with an integrated electric motor.
Source: Carraro
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