The FHA (flexible hose automotive) is a highly flexible metal hose designed to fit all common exhaust system pipe diameters.
- Compensation of large axial, angular and/or lateral motion
- Best decoupling of engine vibration
- Horizontal or vertical mounting orientation
- Ends are free of lubricants and designed for accurate and smokeless welding into the exhaust system
- 100% tested and documented function and geometry
- Function remains constant over the life of the vehicle
The SG type is a semi-self supporting design which may be a lower cost alternative to self-supporting decoupling joints:
- Compensation of angular and axial motion
- Good decoupling of engine vibration
- Compact and symmetrical design
- Horizontal or vertical orientation - vertical when located near exhaust manifold
The BOA Group also offers a decoupling joint as self-supporting device (with no hangers). It is highly gas tight and corrosion resistant for a long time period. Basic functions of the self-supporting decoupling joint are:
- Decoupling engine motions
- Suppressing system resonances
BOA design calculators and 6 DOF (degrees of freedom) validation provides our customers a tailored and optimized product design according to their needs - reducing application size, weight and cost.
The SE is a low cost decoupling joint that uses a circumferentially mounted stainless steel cable as the load support mechanism in place of the wire mesh element used in other designs.
- Acceptance of angular motion
- Very good decoupling of engine vibration
- Compact and a rotationally symmetric design
- Vertical mounting orientation
- Can be flange mounted
The CE type is also a cost reduced version. It has already proven its durability in several million vehicle applications.
BOA thermal compensators are used in tubular exhaust manifolds, down-pipes and crossover pipes and provide the following functions:
- Compensation of stresses caused by varying thermal expansion rates.
- Flexibility in alignment of parts during installation.
The BOA high frequency damper (HFD) dampens and prevents transmission of high frequency vibrations within turbocharged exhaust structures, increasing the acoustic comfort of the vehicle.
The high frequency damper is very stiff and self-supporting. It consists of a special multi-layer bellows with a maximum of 5 corrugations, combined with a damper cushion which is installed on the inlet side of the damper.
The BOA HFD achieves a significant reduction of structure born noise – at low cost and efficiently!