Powertrain Systems

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 either by a controlled area network (CAN-protocol), or pulse width modulation (PWM) signal.

Their 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. Integrated electronics enable software and calibration changes without modification of the electronic control unit's software algorithm. In un-powered conditions, the actuators will move into a default position.

Benefits

• Integrated electronics with dynamic position sensing provide enhanced accuracy resolution
• DC brushless motor offers high torque and excellent durability
• Aluminum body and steel gears provide high durability
• Compact unit design with a single connection enables mounting and packaging flexibility, allowing actuation of high-temperature devices
• 12 V⁄24 V compatibility provides application flexibility
• J1939 CAN compatibility simplifies communication with the engine control unit

Delphi Medium Duty Link Drive Liquid/Air Cooled Smart Remote Actuator

Delphi Medium Duty Direct Drive Liquid Cooled Smart Remote Actuator

Delphi Heavy Duty Direct Drive Liquid Cooled Smart Remote Actuator

EGR system showing precision controlled actuator options

Typical Applications

Delphi Smart Remote Actuators are typically used for high-demand EGR and turbo (VG and Dual Stage) 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.

• 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 increase EGR system pressures and flow as well as 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.
  

Their durability, flexible mounting options and adaptability make Delphi SRAs ideal for the actuation of high-temperature gas controls and other powertrain devices.

Performance Specifications

Performance Advantages

The sensitivity and precision of the integrated electronics in Delphi Smart Remote Actuators enable them to significantly improve the flow control in EGR systems. They provide improved control, speed and precision for turbo systems, versus pneumatic and hydraulic actuators.

The Delphi Smart Remote Actuators use integrated technology for accurate position control, high 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.