Powertrain Systems

Delphi Smart Remote Actuators (SRA) are electromechanical devices that actuate engine features, such as variable geometry turbochargers (VGT) and exhaust gas recirculation (EGR) valves. They also provide 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 SRA 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 Direct Drive Liquid Cooled Smart Remote Actuator

Delphi Heavy-duty Direct Drive Liquid Cooled Smart Remote Actuator

Typical Applications

Delphi Smart Remote Actuators are typically used for high-demand EGR and VGT 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 VGT control: The SRA drives linked or directly engaged features in the turbocharger to optimize engine performance.

Their durability, flexible mounting options and adaptability make Delphi SRA 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 VGT systems versus pneumatic and hydraulic actuators.

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 is actively involved in the development of advanced diesel technologies to help manufacturers meet stringent emissions standards and to help enhance fuel economy.

Delphi designs and supplies complete diesel engine management systems for light-duty, medium-duty, and heavy-duty applications including injection systems and electronics. Delphi has design and engineering centers located in Europe, Asia, North America, and South America enabling exceptional on-time delivery.