Dual-Channel Control Units
Design Highlights
- Dual-channel control architecture with FADEC-like functionality and hydromechanical backup
- Model-based software developed in Simulink
Key Features
- Full engine control across all operating modes
- Parameter limiters for safe operation
- Overspeed and overtemperature protection
- Compressor stall detection
- Integrated pressure sensors
- Flight data recording capability
- Engine health and maintenance parameter monitoring
E018 Control Unit
The E018 is a dual-channel control unit developed for managing the D-18T series 3M/3A engine. It provides full control of the engine across all operating modes and continuously monitors its condition and functions.
As part of the engine’s automatic control system, the E018 performs the following functions:
- Communication
- Fuel flow control
- Variable stator vane angle control
- Engine start sequence
- Engine control in all operating modes
- Parameter limitation (shaft speed, exhaust gas temperature, etc.)
- Diagnostics
- Overspeed protection
- Compressor surge detection
- Measurement of all inputs (analog and discrete)
- Control of all outputs (analog and discrete)
The integration of this control unit into aircraft results in significant fuel savings during flight, leading to lower operating costs and enabling longer range.
Another key advantage is the reduction of emissions, which eliminates additional costs associated with exceeding emission limits.
E452 Control Unit
E452 is a dual-channel modular control system designed for AI-450C-2 series engines. The control electronics architecture is divided into separate modules that manage engine control and provide complete diagnostics. The system includes the following functional units:
- Control Modules A and B – handle the main engine control functions and data storage.
- Independent non-rotational protection module.
- Standalone engine vibration diagnostics module.
- Parameter monitoring and diagnostics module.
- Dual-channel pressure sensor.
Each module forms an independent functional unit—the system is designed as a distributed architecture. In the event of a module failure, it can be easily replaced without affecting the operation of other parts of the system.
The E452 control unit provides complete dual-channel engine control and communication with onboard systems via CAN and ARINC 429 interfaces. Service access and diagnostics are implemented through the ETHERNET interface.