Locomotive prime movers, traction alternators, and exhaust aftertreatment systems generate intense, concentrated heat in a compact, vibration-heavy environment. Crew protection, fuel efficiency, emissions compliance, and component reliability all depend on managing that heat effectively. Unitherm builds removable insulation systems engineered for the unique demands of rail.
Locomotive Insulation Applications
- Diesel engine exhaust manifolds, turbochargers, and stacks
- Aftertreatment systems (DPF, SCR, DOC) requiring stable inlet temperatures
- Exhaust silencers and mufflers
- Auxiliary power units and HEP generators
- Crew cab firewall and floor insulation
- Cooling and lube oil system piping
Unitherm’s Locomotive Insulation Solutions
Unitherm partners with locomotive OEMs, rebuilders, and Class I railroads to deliver durable, removable insulation that survives the rail environment—vibration, weather, diesel fuel and oil exposure, and repeated maintenance cycles. Our covers are templated to fit exact engine configurations and built with abrasion-resistant outer fabrics that hold up in service.
Our rail product line includes high-temperature exhaust insulation rated above 1,800°F, aftertreatment thermal management blankets, acoustic insulation for cab and equipment compartments, and weatherproof assemblies designed for outdoor stabling and long maintenance intervals.
Key Benefits
- Maintain optimal aftertreatment temperatures for emissions compliance
- Reduce cab and engine compartment temperatures for crew comfort
- Lower fuel consumption by retaining exhaust energy
- Cut shop time—covers remove in minutes for inspections and rebuilds
- Built to survive the vibration, weather, and contamination of rail service
Whether you’re rebuilding a fleet, designing a new locomotive platform, or retrofitting Tier 4 aftertreatment, Unitherm has the experience and product range to support your project. Contact our rail engineering team to get started.