Tenneco, a supplier of automotive dampers, has developed a highly tuneable hydraulic rebound stop (HRS) system, designed to minimise the damper rebound topping energy and noise encountered in BEVs and other comparatively heavy passenger vehicles.
Tenneco says the system, named Ride Refine Advanced HRS, also eliminates the need for chassis reinforcements, which are often added to resist high-energy impacts. Now available in Tenneco’s ‘Monroe OE Solutions’ brand double-tube shock absorbers and struts, the system can also be custom tuned to increase body control and enhance vehicle ride comfort.
This video shows how the system works.
Engineered to provide high damping force and noise performance, the Ride Refine Advanced HRS system features a grooved and swaged pressure tube and high-resistance sealing ring that provide what Tenneco describes as a “virtually imperceptible, highly progressive transition to HRS activation”. The system’s broad tuning curve is defined by the pressure tube swage length and bleeds on the side of the sealing ring. By eliminating a mechanical spring, Tenneco’s engineers say they also reduced damper weight and packaging requirements.
“This innovative system addresses a profound need among vehicle OEMs to optimise management of peak suspension loads on electric vehicles, which are heavier and sit lower to the ground,” said Dan Keil, Tenneco’s executive director of product engineering for Monroe Ride Solutions.
“This versatile new technology delivers premium damping performance and an exceptionally broad tuning range while minimising weight and complexity as well as durability for long lasting performance. It is precisely what is needed for BEVs, HEVs and vehicles with comparatively high kerb weight,” added Keil.
