Inertance-integrated damping system for wheel assembly bushings

A wheel assembly for a vehicle, the wheel assembly comprising:

• a wheel hub;
• a wheel rotatably mounted on the wheel hub;
• an in-wheel electric motor including a stator mounted on the wheel hub and a rotor coupled to the wheel such that the rotor and wheel rotate together relative to the stator and wheel hub;
• and
• at least one wheel assembly bushing comprising an inner bushing member, an outer body that is concentrically arranged about and radially spaced from the inner bushing member, and a resilient sleeve positioned radially between the inner bushing member and the outer body,
• wherein the resilient sleeve is made of a resilient material such that the resilient sleeve is configured to permit relative movement between the inner bushing member and the outer body,
• wherein the at least one wheel assembly bushing includes a hydraulic chamber positioned within the resilient sleeve and a helical fluid channel extending helically about the inner bushing member, the helical fluid channel being arranged in fluid communication with the hydraulic chamber such that the helical fluid channel is configured to produce a phase delay between input forces causing relative movement between the inner bushing member and the outer body and reaction forces caused by pressure pulses in the hydraulic chamber resulting from fluid flow through the helical fluid channel.