Research And Analysis About Pedal Group And Breaking Pipe System On Passenger Cars

This research work is a combination of a passenger car platform chassis partsdevelopment projects. Research papers related to the pedal group of automotivechassis and pipe system layout, and test and evaluation. First introduced the kind ofcar ergonomics check, to extract the car-like vehicle of the competing products, thereverse design, RAMSIS software to check the layout of the pedal surface, and protectThe model driving safety and driving comfort ergonomic principle. Subsequently, thedefinition of the pedal group and piping systems, structural principles, materialsanalysis, design principles for an elaboration. The model of the brake pedal for thechange lever design, according to its structure, operating principles and a simplifiedmathematical model, using ADAMS software to establish the simulation model tocalculate the leverage of the pedal curve, for the follow-up pedal feel The evaluationof the foundation.In the pedal group and the test specifications of the pipeline system, detailedmaterial requirements, performance requirements, such as the stiffness of the pedalgroup test, strength test, durability test, test methods and standards; brake pipingsystem of the tensile test, flaring test, bending test, salt spray test.In summing up the pedal group, and experience in the design of piping systems,evaluation of the back of the clutch pedal boost spring design special, just the pedal ispressed with a certain resistance, play a role in the pedal return when the pedal too themiddle of a location, return the power spring to play a role in helping provide a boostfor the pedal, effectively reduces the pedal force, the clutch pedal feel; that the brakepedal with variable leverage design structure fixed pole than the brake pedal, variableleverage than the brake pedal has the following advantages: leverage increases, theresistance will be correspondingly smaller increase than with the trip; greater leveragethan make the pedal input decreases, so the input force of the brake pedal would bemore uniform, better comfort, and provide a reference for the subsequent design. Road test vehicle due to piping system failure leading to power down the systemand found that the master cylinder to ABS-EHCU pipeline rupture in the hose clampposition to increase the stiffness by changing the ABS-EHCU bracket measures, theproblem is resolved. Visible, to improve the ABS bracket stiffness is the key to thebrake pipe rupture. In the design of the ABS bracket must give full consideration tothe damage of ABS vibration on the brake lines, brake lines for future development toprovide a reference.