A mobile diagnostic system for analyzing the operation of internal combustion engines

Abstract

The article discusses the functionality of a mobile diagnostic complex, an equipment that allows detailed analysis of the operation of an automobile engine based on the oscillograms of the engine harness and signals from additional sensors. This equipment complements the capabilities of a scanner or other device that works with an ECM controller over a digital communication line. The convenience of connection, user-friendly interface and a large number of requested parameters in most cases allows you to solve tasks exclusively with the help of equipment connected to the diagnostic connector of the car. Even when working with the presented diagnostic complex, when the capabilities of the scanner are insufficient, it is advisable to receive some of the information from the car via a digital communication line. Additional pressure sensors in the cylinder, combined with spark plugs or incandescent lights, and accelerometers significantly expand the capabilities of the diagnostic complex. The software of the complex makes it possible to calculate the indicator torque and indicator operation when processing the signal of the standard DPKV and indicator diagrams together. The article also provides examples of the use of the diagnostic complex when performing in-depth diagnostics and conducting research work on internal combustion engines.