Rubber Design Torque Compensation System (TCS) for Noise Reduction in Yacht Propulsion

Rubber Design Torque Compensation System (TCS) for Noise Reduction in Yacht Propulsion

The Rubber Design Torque Compensation System (TCS) has been developed to significantly improve noise levels in modern yacht propulsion installations. While engine vibrations are well isolated from the ship’s foundation with resilient engine mounts, low-frequency vibrations are still transmitted over the coupling to the gearbox. Traditional semi-elastic gearbox mounts, which are relatively stiff due to their torque-transmitting function, result in poor isolation of these low-frequency vibrations, leading to noise transfer to the ship's foundation. The TCS addresses this challenge with an innovative design that offers minimal stiffness, enabling effective isolation and noise reduction.

Key Features:

• Minimal Stiffness: The TCS provides a mounting option with only a fraction of the stiffness compared to conventional gearbox mounts, effectively reducing the transmission of low-frequency vibrations.
• Improved Noise Isolation: By compensating for torque displacements, the TCS ensures that softer gearbox mounts can be used, greatly improving noise isolation.
• Adjustable Conical Rubber Springs: The system includes two height-adjustable conical rubber spring elements that support the gearbox weight and allow for alignment adjustments.
• Air Springs for Torque Compensation: Two air springs create a counterforce to compensate for torque displacements, preventing excessive gearbox movement and ensuring stability.
• Internal Displacement Limiters: Adjustable displacement limiters within the TCS prevent excessive gearbox movement under all conditions, eliminating the need for external limiters.
• Active Control Unit: The TCS control unit constantly monitors the gearbox's position, adjusting the air spring pressures as needed to maintain the optimal position and alignment of the gearbox.

Benefits:

• Allows the use of softer gearbox mounts for quieter and more efficient operation.
• Reduces transmission of vibrations and structure-borne noise, improving onboard comfort.
• Prevents torque displacements, ensuring the gearbox remains in the correct position under various operating conditions.
• Adjustable system for alignment and compensation, ensuring maximum flexibility and performance.

The Rubber Design Torque Compensation System (TCS) offers a sophisticated solution for improving noise isolation and vibration reduction in yacht propulsion systems. Its innovative design allows for the use of softer mounts, making it an ideal choice for modern vessels that require both efficiency and quiet operation.