Shock absorber energy storage

What are regenerative shock absorbers?

The regenerative shock absorber is divided into four modules: vibration energy capture module, motion conversion module, generator module and electric energy storage module. The random vibration of suspension, caused by certain factors, such as rugged roads and speed variation, acts on the vibration energy capture module.

How can regenerative shock absorbers improve fuel efficiency?

In theory, by regenerating braking energy, maximum fuel efficiency can be increased by 30%, and efficiency can be further improved by 10% by recovering the vibration energy in suspension systems . Energy regenerative shock absorber (ERSAs) that scavenge vibration energy are considered one of the most promising methods.

How do energy harvesting shock absorbers work?

Struct. 22 025008 DOI 10.1088/0964-1726/22/2/025008 Energy-harvesting shock absorbers are able to recover the energy otherwise dissipated in the suspension vibration while simultaneously suppressing the vibration induced by road roughness. They can work as a controllable damper as well as an energy generator.

Do shock absorbers save energy?

Several studies reported that conventional shock absorbers are liable for 30% of energy dissipated at wheel systems, which is approximately 10% of the total vehicle fuel consumption (Abdelkareem et al. 2019). The RSA can recover waste vibration energy from the suspension system while reducing the vibrations (Cai and Zhu 2022).

Can regenerative shock absorbers power electric vehicles?

The vibration energy from vehicle suspension systems is always wasted in heat and can be utilized for useful purposes. Many researchers have designed various regenerative shock absorbers (RSA) to transform vibration energy into electrical energy that can charge electric vehicles’ batteries and power low-wattage devices.

Can energy regenerative shock absorbers harvest kinetic energy from vehicle suspension vibration?

Conclusion An energy regenerative shock absorber is able to harvest the kinetic energy from the vehicle suspension vibration. This paper presented the design, modelling, simulation and test of a novel energy regenerative shock absorber based on dual-overrunning clutches for electrical vehicles.