POWERTRAIN SYSTEMS
Delphi Smart Remote Actuators
Delphi Smart Remote Actuators (SRAs) are electromechanical
devices that actuate engine features, such as variable geometry
(VG) and dual stage turbochargers, exhaust gas recirculation
(EGR) valves and exhaust flap control valves. They also supply
precise rotary position feedback to the engine control unit, which is
provided by a controlled area network (CAN-protocol).
High vibration and temperature resistance capabilities enable
Delphi SRAs to withstand harsh environments. Liquid cooling is
also available for extremely high temperature environment
applications to protect the brushless motor and the integrated
electronics.
Benefits
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Integrated electronics with position sensing provide enhanced
accuracy resolution
DC brushless motor metal gears and aluminum body provide high
torque and extended durability
Configurable mechanical default position and multiple mounting
options enable various customer mounting options
Compact unit design with a single connection and multiple options
(integrated or pigtail) enables mounting and packaging flexibility
12 V/24 V compatibility provides application flexibility
Industry standard J1939 CAN communication for integration with
the engine control unit
Delphi High Value High Performance
(HVHP) Smart Remote Actuator
Delphi SRA 5 High Performance High Value
(HPHV) Smart Remote Actuator
Typical Applications
Delphi Smart Remote Actuators are typically used for highdemand EGR and turbo (vane, nozzle, waste gate and by-pass)
applications, such as medium duty and heavy duty diesel
engines to help provide optimum performance and enable
compliance with current and future exhaust emissions
standards.
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For EGR control: The SRA 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 SRA drives linked or directly engaged
features in the turbo charger to optimize engine performance.
For Exhaust Flap control: The SRA drives a linked exhaust valve
to the position required by the engine control unit for optimum
exhaust pressure and engine braking.
Delphi SRA 6 High Value High Flexibility
(HVHF) Smart Remote Actuator
Their durability, flexible mounting options and adaptability make Delphi Smart Remote Actuators ideal for
the actuation of high-temperature gas controls and other powertrain devices.
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Delphi Smart Remote Actuators
Specifications
Peak torque output
Continuous torque output
Resolution
Response time
Rotation travel
Operating temperature range
Communication
Mechanical default position
and spring force
Power input
SRA 5
SRA 6
Up to 12.0 Nm
Up to 8.0 Nm
Up to 8.0 Nm
Up to 6.0 Nm
0.26°
0.12° to 0.26°
<180 ms
<150 ms
Up to 120° (Consult Delphi for travel limits recommendation)
-40°C to 150°C
CAN J1939
Configurable
12 V, 24 V
EGR system showing precision controlled actuator options
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Delphi Smart Remote Actuators
Performance Advantages
The high precision of the integrated electronics in Delphi Smart Remote Actuators enables significant flow
control improvement in EGR systems. They provide improved control, speed and precision for turbo
systems, versus pneumatic and hydraulic actuators.
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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