Average gas torque estimating method for e.g. diesel type internal combustion engine, involves using position sensor to detect displacement of pattern of target, and estimating average torque value using specific equation

摘要

The method involves using a position sensor (2) to detect displacement of a pattern (6) of a target (4). The sensor delivers an alternative signal of frequency proportional to a scrolling speed of pattern. An average gas torque value is estimated using a specific equation comprising several parameters. The parameters include average gas torque by engine combustion, a function depending on characteristic dimensions for displacement of engine, a balance coefficient and variable depending on engine functioning parameters, patterns of target, and balance coefficient.