POWERTRAIN SYSTEMS
Delphi BA7 Actuators
Delphi BA7 Actuators are electromechanical devices that actuate
engine features such as exhaust gas recirculation (EGR), break
flap and turbo (vane, nozzle, waste gate and by-pass) for medium
duty and light duty engine applications. They also supply precise
rotary position feedback to the engine control unit.
Benefits
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Brush motor meets medium duty and light duty durability and
performance requirements
Compact unit design with a single connection enables mounting
and packaging flexibility
Non-contacting absolute positioning sensing provides accurate
feedback and high durability
Aluminum body, plastic cover and gears provide high durability,
low cost and low mass
12 V compatibility
Typical Applications
Delphi BA7 High Value Medium Duty (HVMD)
Actuator
Delphi BA7 Actuators are typically used for EGR and turbo
(vane, nozzle, waste gate and by-pass) applications on medium duty and light duty diesel or gasoline
engines to help provide optimum performance and enable compliance with current and future exhaust
emissions standards.
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For EGR control: The BA7 drives a linked EGR valve into the position that is required by the engine control unit to
provide the optimum EGR rate.
For Turbo control: The BA7 drives linked engaged features in the turbo charger to optimize engine performance.
For Exhaust Flap control: The BA7 drives a linked exhaust valve to the position required by the engine control unit
for optimum exhaust pressure and engine braking.
Their durability, flexible mounting options, adaptability and low cost make Delphi's Brush Actuators ideal for
actuation on light duty to medium duty applications.
Specifications
Peak torque output
Continuous torque output
Resolution
Response time
Rotation travel
Operating temperature range
Communication
Mechanical default spring force
Power input
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Up to 1.8 Nm
Up to 1.2 Nm
0.38°
<180 ms
Up to 90° (Consult Delphi for travel limits recommendation)
-40°C to 150°C
PMW 5% to 95%
Application dependent
5 V regulated
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Delphi BA7 Actuators
EGR System showing precision controlled actuator options.
Performance Advantages
The high precision of the integrated electronics in Delphi's Brush Actuators enable significant flow control
improvement in EGR systems. They provide accurate feedback, speed and precision for turbo systems,
versus pneumatic and hydraulic actuators.
Delphi's Brush Actuators use integrated technology for accurate position feedback, mid-range actuation
torques and flexible mounting options. They are also easily adaptable to a variety of other requirements for
rotary input. Their single-point electrical connection to the engine management system enables greater
mounting and packaging flexibility and interface simplicity.
The Delphi Advantage
Delphi offers the benefits of a long history of actuator design, development and manufacturing expertise
and has one of the widest portfolios of actuators for the automotive and heavy duty industries. Delphi is
continually developing new and improved actuating technologies to help manufacturers meet objectives for
emissions control, fuel economy, drivability and noise.
As a global leader in engine management systems technology, Delphi can help manufacturers meet
emissions requirements, improve fuel economy and enhance performance. Delphi is a source for high
value solutions and our systems expertise is built into every product. Delphi's flexible engineering approach
encourages collaboration. And, Delphi has a thorough understanding of automotive markets around the
world and a global network of resources.
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