Handling and Braking Analyses of a Heavy Vehicle with a Cross-Axle Fluidically-Coupled Suspension

Document Number: 2008-01-2672

Date Published: October 2008

Author(s):
Dongpu Cao - Concordia Univ.
Subhash Rakheja - Concordia Univ.
Chun-Yi Su - Concordia Univ.

Abstract:
The handling and braking responses of a heavy vehicle equipped with a cross-axle fluidically coupled hydro-pneumatic suspension concept are investigated. The proposed fluidically coupled suspension is conceived by diagonally interconnecting different hydraulic fluid chambers of the four suspension struts of the vehicle. The analytical formulations of suspension forces are derived based on fluid flows through the couplings and damping valves. A generalized full-vehicle model is developed and validated to evaluate the handling and braking responses to two critical vehicle maneuvers: (i) braking-in-a-turn; and (ii) split-\gm, straight-line braking. The responses of the vehicle model with the coupled suspension are compared with those of the uncoupled suspension under various inputs to demonstrate the potential benefits of the proposed cross-axle fluidic coupling of the suspension struts.

File Size: 485K
Product Status: In Stock

Included in: V117-2008

See other papers presented at Commercial Vehicle Engineering Congress & Exhibition, October 2008, Chicago, IL, USA, Session: Vehicle Dynamics (Part 1 of 2)

Purchase more technical papers and save! With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay. Learn more >