High Resolution Subsurface Acoustic Soil Imaging

In the proposed research, the angular velocity response of the crankshaft will be measured using non-contacting magnetic pickup sensors at the front and rear of the crankshaft. This measured angular response will then be deconvolved through a mathematicalmodel of the system to estimate the torque applied by each individual cylinder in the engine. The current state of the art in similar methods is limited to engines operating under conditions where crankshaft torsional deflection is not pronounced.Dynasim Research Ltd. has demonstrated success with a new diagnostic method that places no restriction on the amount of crankshaft torsional deflection. The method has been experimentally validated using measured data taken on a Cummins 19 liter heavyduty diesel engine. The method is suitable for retrofit on existing mechanical engines, as well as on new electronic engines. The Phase I project has demonstrated the feasibility of the methods. The Phase II project will implement and improve themethods using an engine in a test cell. Successful implementation will allow the identification of cylinder combustion and compression faults before other symptoms occur.