DRIVERS, OPPORTUNITIES AND CHALLENGES OF THE 48V SYSTEM

2ND INTERNATIONAL CONFERENCE AUTOMOTIVE 48 V POWER

SUPPLY SYSTEMS

DÜSSELDORF, GERMANY

BASTIAN HARTMANN

ADVANCED POWER SUPPLY

AND ENERGY

MANAGEMENT

FORD R&A EUROPE

2 06/11/2014 FORD – Drivers, opportunities and challenges of the 48V system

Drivers and challenges for 48V

Ford’s 48V Mild Hybrid architecture

Opportunities for next generation architecture

Conclusion

AGENDA

3 06/11/2014 FORD – Drivers, opportunities and challenges of the 48V system

Fuel economy (cycle and real world)

Extended stop/start operation

Recuperation + torque assist or power supply of loads

Reduced electrical losses

New demand-controlled electrified actuators

Electrification of mechanical PT actuators

Increased feature content

Comfort

Driveability

Increased electric demand, limits of 12V alternator capacity and ampacity of cables

-> voltage quality issues

Weight reduction

Downsized actuators and cables

DRIVERS FOR 48V

4 06/11/2014 FORD – Drivers, opportunities and challenges of the 48V system

DRIVERS FOR 48V – CO2 FLEET EMISSION TARGET

The competitive pressure and customer expectation is requesting further reduction in

CO2 emissions.

5 06/11/2014 FORD – Drivers, opportunities and challenges of the 48V system

Cost

Complexity/Commonality

Assembly logistics

Two variants of the component

Investment costs

Variable costs

Fuel economy

New features might decrease the FE benefit of the mild hybrid system

Package/Weight

Additional components (48V battery + DCDC)

Additional wiring/fusing

Service & Maintenance

CHALLENGES FOR 48V