Elasto Proxy's Sealing Solutions Blog Blog

Elasto Proxy's Sealing Solutions Blog

Elasto Proxy's Sealing Solutions Blog is the place for conversation and discussion about the design and manufacturing of rubber and plastic parts and products. In addition to regular content from Elasto Proxy, you'll hear from companies across the rubber and plastics industry.

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Engine Compartment Insulation for Heat and Noise Reduction

Posted May 29, 2018 4:55 PM by Doug Sharpe

Engine compartment insulation keeps heat and noise in the engine bay from reaching a vehicle’s interior. Thermal insulation protects drivers, operators, and passengers from high temperatures that can also damage on-board electronics such as GPS tracking systems. Acoustic insulation dampens damaging sound-induced vibrations and protects personnel from decibel levels that can harm human hearing.

With forestry equipment, military land systems, and other types of mobile specialty vehicles, the cab where the operator sits is usually next to the engine compartment. If the cab is directly above the engine bay, installing thermal-acoustic insulation under the cabin floor is a smart choice. Cabin insulation supports additional noise reduction. Inside the engine compartment, insulation is attached to the firewall.

For mobile equipment manufacturers, choosing the right engine bay insulation is an important design consideration. Product designers and engineers need to understand their options, but it’s also important to understand how thermal-acoustic insulation is made. Engine compartment insulation that’s custom-fabricated doesn’t just reduce heat and sound. It helps you to control costs and improve quality.

Sandwich-Style Insulation for Engine Bays

Engine compartment insulation can feature layers of thermal and acoustic materials that are assembled into a sandwich-like structure that’s between 1/2” and 2” thick. Sometimes, the top layer consists of an aluminum facing or metallized Mylar that’s laminated to an elastomeric foam. This facing reflects radiant heat, withstands contact with water and engine oil, and can be reinforced for abrasion-resistance.

The middle of this insulation sandwich can include a layer of hard rubber that stops loud engine sounds and a layer of acoustic foam for additional sound absorption. The bottom layer can use a pressure-sensitive adhesive with a removable liner. Taped insulation is easy-to-install and eliminates the health and safety concerns that are associated with adhesive spraying.

How Engine Compartment Insulation Is Made

Thermal-acoustic insulation for engine compartments requires lamination and cutting. Lamination joins individual layers of material into a sandwich-like structure. Water jet cutting creates straight lines, rounded corners, and chamfers with 30° or 45° angles. Compared to manual cutting, water jet cutting means less material waste, closer tracking of material usage, greater repeatability, and higher quality.

Parts marking, kitting, and custom packaging add value to engine compartment insulation. Parts that are marked with letters, numbers, or other identifying features can be custom-packaged into kits so that assemblers have everything they need in a single box. Instead of looking for 10 or 20 different SKUs in a warehouse, an installer can just open a box and get to work.

How to Find Engine Bay Insulation

Elasto Proxy supplies engine bay insulation to manufacturers of mobile equipment and military vehicles. We laminate materials into multi-layer structures and use both water jet cutting and abrasive water jet cutting equipment to make fine, fast cuts that don’t require paying for or waiting for tooling. Elasto Proxy also offers design assistance and help with material selection.

Elasto Proxy’s capabilities also include parts marking, kitting, and custom packaging. Thanks to inkjet printing and UV drying, our parts marking system produces letters and numbers that are crisp, clean, and easy-to-read. Elasto Proxy can also ship specially-packaged kits on-demand so that, depending on your inventory practices, parts can go right from your receiving dock to your assembly line.

Request Your Sample Bag Today

Do you need thermal-acoustic insulation for mobile equipment or military vehicles? Would you like samples that you can show to co-workers in purchasing, engineering, or operations? Then request Elasto Proxy’s sample bag. Packaged in a black-and-orange cinch bag, this convenient kit contains representative samples that demonstrate Elasto Proxy’s capabilities. To see it before you request it, watch this video.


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