Medha’s Auxiliary Power Supply (APS) is an independent, self-contained system designed to support locomotive operations without requiring the main engine to run continuously. It features a small diesel engine coupled with a low-capacity compressor and alternator, providing power for essential functions such as maintaining main reservoir pressure, charging the battery, operating the driver cabin HVAC system, and powering other auxiliary loads as per customer requirements. The APU helps reduce fuel consumption and engine wear by allowing the main engine to remain idle unless the locomotive is needed for traction.
Features and Benefits
- Fuel Efficiency: Reduces unnecessary idling of the main engine, lowering fuel consumption and minimizing engine wear.
- Battery Management: Continuously monitors the locomotive battery status and charges it as needed, maintaining optimal battery health.
- Automated Control System: Automatically switches off the main engine during idle periods and activates the Auxiliary Power Supply engine to maintain key functions.
- Integrated Compressor: Equipped with a small compressor to maintain Main Reservoir pressure and compensate for leakage in the air system.
- Safety and Monitoring: Provides continuous monitoring of critical parameters like Main Reservoir pressure, engine temperature, and battery status to ensure safe operation.
- Complete Solution: Supplied with all necessary controls, sensors, accessories, and application software for seamless integration.
| Parameter | Details |
|---|---|
| Engine Type | Small diesel engine for auxiliary functions |
| Compressor | Low-capacity small compressor for maintaining Main Reservoir pressure |
| Alternator | Provides power for battery charging and auxiliary loads |
| MR Pressure Range | Maintains pressure between 8 to 10 kg/cm² |
| Monitoring | Tracks Main Reservoir pressure, engine temperatures, battery status, and idle time |
| Automatic Operation | Switches between main engine and APU engine based on idle status and critical parameters |
| Safety Features | Monitors critical parameters and automatically starts the main engine if limits are exceeded |
Medha Auxiliary Power Supply is designed to operate autonomously, ensuring that all critical functions of the locomotive are maintained without the need for manual intervention. It helps reduce fuel costs and emissions while extending the life of the main engine. The system comes fully equipped with a control unit, sensors, and application software, making it easy to integrate with existing locomotive systems.
