Firetrace Introduces Linear Heat Detection (LHD) for Engine Fire Suppression

Firetrace International, a global leader in automatic fire suppression solutions, today announced the launch of Linear Heat Detection (LHD) as a new detection option within its engine fire suppression portfolio.

Designed specifically for combustion engine environments, LHD expands Firetrace’s detection capabilities beyond traditional Fire Detection Tubing (FDT), offering enhanced durability and performance in high-vibration, high-temperature applications.

Addressing a Critical Risk in Engine Environments

Combustion engines – common across buses, ground support equipment (GSE), port machinery, and other heavy-duty applications – operate under extreme conditions where heat, vibration, and fuel sources combine to create elevated fire risk. According to industry data, vehicle fires account for a significant portion of total fire incidents in the United States.

Firetrace’s new LHD solution is engineered to detect fires at their earliest stage, directly at the source, enabling rapid automatic suppression and minimizing damage, downtime, and risk to personnel.

How Linear Heat Detection Works

Linear Heat Detection uses a continuous sensing cable, designed and manufactured by trusted, innovative global supplier Thermocable, routed throughout the engine compartment. When exposed to elevated temperatures, the cable’s protective coating melts, triggering a signal to the control module and activating the suppression system.

This electronic detection method integrates with Firetrace’s Indirect Low Pressure (ILP) systems, enabling seamless coordination between detection, control, and agent discharge.

Key Advantages Over Traditional Detection Tubing 

While Firetrace Detection Tubing (FDT) remains a proven and widely used solution, LHD introduces several benefits for demanding engine applications:

• Enhanced durability in high-vibration environments; eliminates pressurized tubing and fittings that may be susceptible to wear or leakage
• Higher ambient temperature tolerance; supports installation closer to hot engine components
• Reduced risk of accidental discharge; more stable in harsh operating conditions
• Advanced system control; integrates with control modules featuring alarms, delays, and manual overrides

Built for Performance and Flexibility

Firetrace’s engine suppression systems with LHD are available with:

• ABC Dry Chemical or Purple K agents
• Multiple cylinder configurations (10 lb, 20 lb, and expanded system options)
• Protection for engine volumes up to 6 m³
• Driver control interfaces with manual release, delay settings and status indicators

Systems are designed to meet relevant industry standards and provide reliable protection across a wide range of applications.

A Complete Solution from Detection to Suppression 

“Firetrace has always focused on delivering simple, effective, and application-specific fire protection,” said Brian Cashion, Vice President of Engineering & Quality for Firetrace. “With the introduction of Linear Heat Detection, we’re giving our partners and customers another powerful option, especially for the most demanding engine environments where durability and control are critical.”

Availability

Linear Heat Detection is now available as part of Firetrace’s engine fire suppression systems. Customers can work with Firetrace and its global network of distribution partners to determine the best detection method – FDT or LHD – based on their specific application requirements.