Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Development and Implementation of a Shift Assistance System for an Automotive Chassis Dynamometer
Submission Author:
Elvis Bertoti , SP
Co-Authors:
Elvis Bertoti, Jony Eckert, Rodrigo Yassuda Yamashita, Franco Giuseppe Dedini, Ludmila Silva
Presenter: Rodrigo Yassuda Yamashita
doi://10.26678/ABCM.COBEM2017.COB17-1415
Abstract
Besides the powertrain, driver behavior and, more specifically, gearshift strategies are parameters which have a significant impact on the overall fuel consumption of a motor vehicle. In this context, the present work aims to describe the development and implementation of an acquisition system and a human-machine interface programmed in the visual programming language LabVIEW for the execution of standardized drive procedures on a chassis dynamometer. Additionally, this interface is provided with a gearshift indicator designed for the assessment of gearshift strategies on manual transmission vehicles. Different shifting patterns from previous works were then selected and deployed to evaluate their effect on the fuel economy when the test pilot performed the standardized NBR6601 drive cycle. This experiment intended not only to confirm the effectiveness of the Interface as a test driver assistance system but also to provide a measurement of how much of influence the introduction of a Gear Shift Indicator on the dashboard of the vehicle could have on fuel economy. This apparatus, which is already mandatory in the European Union since 2012 for newly produced vehicles, is intended to guide the decision-making of the driver and encourage him to take an eco-friendly approach regarding gear shifting, representing a low cost measure to reduce fuel consumption and consequently greenhouse gas emissions already in the current automotive fleet. From the tests, a variability of 29.8% in fuel consumption could be achieved when contrasting strategies focused on vehicle performance and on fuel economy, provided that the same drive schedule, i. e., same speeds as a function of time, was performed, proving the efficacy of the system as a communication platform from the vehicle engineers to the driver.
Keywords
Roller Chassis Dynamometer, Gearshift Strategy, Gear Shift Indicator, Human-Machine Interface, experimental validation
