High-Performance Air Suspension System



Suspension systems are used to reduce vibrations/shocks transmitted to the vehicle body from the road/terrain being travelled in order to enhance driver/passenger comfort and protect cargo and chassis. Typical designs are a compromise between performance measures such as vehicle ride, handling, load capacity, size constraints and energy consumption.

The University of Waterloo is actively seeking automotive suppliers and manufacturers interested in commercializing an innovative, highly tunable air suspension system.

Description of the invention

The new technology developed by University of Waterloo researchers provides for a new class of road-adaptive suspension systems capable of independently tuning suspension stiffness and vehicle ride height corresponding to road conditions. Utilizing two pressurized chambers and a unique pneumatic control design, easy modification of suspension stiffness and ride height is made possible.


Highly flexible system allowing for:

  • Independent tuning of stiffness and ride height
  • Large static load variations
  • Large dynamic loads
  • Ride handling and comfort
  • High durability, low weight, complexity, and maintenance costs
  • Stiffness and damping control
  • Enables real time tuning to suit road surface

Potential applications

  • On/off-road vehicles
  • Passenger cars, trucks, buses
  • Military vehicles
  • Stationary equipment
Air suspension

Printable PDF




Amir Khajepour
Dongpu Cao
Babak Ebrahimi

Patent status

Issued U.S. and Canadian patents


Scott Inwood
Director of Commercialization
Waterloo Commercialization Office
519-888-4567, ext. 43728