Multi-channel dynamic signal analyzer for research on advanced automotive belt drive systems of micro hybrid vehicles

点击翻译按钮获取中文摘要

The objective of the RTI proposal is to support my research program described in my NSERC Discovery Grant application on advanced automotive belt drive systems of micro hybrid vehicles. Micro hybrid vehicles are a type of hybrid vehicles closest to the conventional vehicles. In micro hybrid vehicles, an advanced accessory belt drive system will be introduced in which the alternator is replaced by a new electric device called Integrated Starter-Generator (ISG). ISG functions as both a starter and a generator, replacing the two separate units in conventional vehicles. A car equipped with an ISG will automatically shut off the engine during idling and quickly restart the engine as the acceleration pedal is depressed. It is estimated that the use of ISG can potentially cut fuel consumption by up to 10% and reduce CO2 emissions by up to 15%.      The advanced accessory belt drive system in micro hybrid vehicles is usually called belt-driven integrated starter-generator (B-ISG) system. The idea of B-ISG came out in year 2000 and has arose a strong interest in the automotive industry because B-ISG requires minimum system redesign and least hardware change to conventional vehicles, thereby providing a cost-effective and quick solution to meeting new environmental standard. However, B-ISG faces a major technical challenge yet to be solved: A very high belt tension is generated when ISG functions as a starter, resulting in quick belt wear and much shortened belt life.         The objective of the proposed equipment in my Discovery Grant is for conducting experiments on a basic B-ISG system to measure and evaluate the tension level in the crankshaft/ISG span. The experimental setup will consist of five pulleys: a crankshaft pulley, an ISG pulley, an accessory pulley, and two-tensioner pulleys. The experiment will require at least five force sensors, five rotational torque sensors, five rotational speed sensors, two acceleration sensors, one speed sensor, two displacement sensors, and two input motor. Accordingly, a 32-channel dynamic signal analyzer is requested in this proposal to accommodate the multiple data acquisition and data analysis requirement.