Singh, B., Rawla, V., Vats, R., and Kumar, A., "Dynamic Simulation of Clutch Actuation System with Flexible Cable," SAE Technical Paper 2015-26-0180, 2015, doi:10.4271/2015-26-0180.
Clutch actuation system in manual transmission is one of the key systems of power-train with which driver interacts frequently. Therefore its load and travel feeling are important to customer.Clutch actuation system consists of clutch pedal assembly, flexible cable mounted on body panel, and clutch release arm/ shaft assembly inside transmission unit assembly. Clutch pedal load, travel and engagement point are important parameters to specify the actuation feeling while designing the clutch actuation system. Validation of actual values is being done at proto vehicle testing stage, as final output calculation may not be accurate due to dependency on variables difficult to estimate.To overcome these difficulties a virtual dynamic model of the entire clutch actuation mechanism has been created in MBD software. Model input factors are based on actual testing results to improve the accuracy. The model predicts the clutch pedal load and travel values for a given set of vehicle inputs. It can be used for parameter studies to investigate potential system improvements. At concept stage, it can be used to indicate suitable specifications for pedal design, cable type and layout, spring stiffness, spring preload, mass, inertia, joints and friction parameters.This paper will present experience of simulation of Clutch actuation system using this dynamic model in ADAMSTM software, the structure of the model, Innovative virtual model for flexible cable, methodology used and correlation with testing results.