Automotive Engine Non-steady-state Combustion Research And Development Of Data Acquisition System

Combustion analyse of ICE under transient condition requires a large amount data. That means the performance of the ICE combustion data acquisition system must be promoted. The paper discusses the development of a combustion data acquisition system to accommodate the request of data processing under unsteady operation condition on the base of Personal Computer system. The system collects top dot sign, speed, pressure and ion currency. The paper discusses the transaction of the indicator diagram such as correcting top dot and pressure base line. An segment filtering program was designed to eliminate the effects of the pressure measuring passage by means of digital signal processing technique. The paper a]sci discusses the processing and application of the ion currency.