Oil Mist Monitoring Made Simple Inside the Daihatsu MD-SX

The Daihatsu MD-SX is a high-performance oil mist detector specifically designed for use in marine and industrial diesel engines. Manufactured by Daihatsu Diesel, this system plays a critical role in preventing engine failures by continuously monitoring oil mist levels within the crankcase. With its robust construction and advanced detection capabilities, the MD-SX is a trusted choice for ensuring engine safety and reliability.

What Is the MD-SX?

The MD-SX is an early warning system that detects the presence of oil mista potential sign of overheating or mechanical failure inside the engine. By identifying these issues early, the system can prevent catastrophic damage such as crankcase explosions, bearing seizures, or fires.

This model uses a sensor-based system, where multiple sensor units are installed through the crankcase wall. Each unit monitors a specific cylinder, providing localized readings of oil mist concentration. These are fed into a central controller, which alerts the operator if abnormal levels are detected.

Key Features

• Natural Diffusion & Optical Detection: The MD-SX operates on a passive diffusion principle, paired with optical dispersion detection. This eliminates the need for moving parts like fans, reducing wear and maintenance.

• Up to 16 Sensor Points: The system can handle up to 16 sensor units, making it suitable for both small auxiliary engines and larger propulsion engines.

• Centralized Control Unit: The controller features a user-friendly interface with an LCD display, LED bar indicators, and function keys. It provides real-time feedback and error diagnostics.

• Alarm Outputs: It includes pre-alarm and main alarm outputs, along with fault detection signals. These outputs can be connected to ship alarm systems or PLCs.

• Durable and Certified: Both the sensors and control unit are IP55-rated for protection against dust and water ingress. The MD-SX is certified by major classification societies including ABS, DNV, LR, NK, BV, and CCS.

Why Oil Mist Detection Matters

Oil mist in the crankcase is typically caused by friction and overheating, which can result from bearing wear, misalignment, or lubrication failure. If undetected, it can ignite under pressure and temperature, leading to severe damage or explosions. The MD-SX system helps prevent these issues by providing timely alerts before conditions reach dangerous levels.

Benefits of the MD-SX

• Enhanced Safety: Continuous, real-time monitoring helps identify issues before they escalate.

• Low Maintenance: No moving parts means fewer breakdowns and easier upkeep.

• Reliable Operation: Proven performance in harsh engine environments and rough sea conditions.

• Scalable: Can be adapted to engines of various sizes and configurations.

Typical Applications

The MD-SX is widely used in:

• Marine diesel propulsion engines

• Auxiliary generator engines on ships

• Land-based industrial diesel generators

• Any application where engine safety and monitoring are critical

Final Thoughts

The Daihatsu MD-SX oil mist detector is a dependable solution for anyone seeking to improve engine safety and reliability. Its combination of sensitive detection, robust design, and user-friendly operation makes it a valuable addition to any engine monitoring system. Whether for marine or land-based use, it delivers peace of mind and helps extend the operational life of critical engine components.