Patent ID: 8135509
Filing Date: 2012-03-13
Classification: G01M,G07C

Abstract:
1. A method of providing information on the operating condition of a Power Plant utilizing fuel trim data; the Power Plant including an engine and a powertrain control module; the method utilizing instrumentation including a microprocessor, and a chart of load on the engine (hereinafter “engine load(s)”) vs. the speed of the engine (hereinafter “engine speed(s)”); the chart being divided into a number of cells, each cell representing a range of engine loads vs. engine speeds wherein no two cells have both the same range of engine loads and the same range of engine speeds; the microprocessor being programmed to extract parameter identification data (hereinafter “PID data”) from the powertrain control module; the microprocessor being further programmed to determine engine speed; the method including the steps of: a. acquiring PID data with the instrumentation, including PID data that provides information on the engine load (hereinafter “engine load PID data”) and fuel trim PID data, from the powertrain control module; b. changing both the engine speed and the engine load; c. determining, with the microprocessor, engine speed as the engine speed is changing; and d. assigning fuel trim PID data as such data is acquired to different ones of the cells as both the engine speed and engine load change.