Diesel Engine Control for Aftertreatment Component Development
Problem: The need to perform increasingly long engine test cycles with limited test cell capacity, resulting in longer product development times; our customer desired a way to speed up the testing of many diesel particulate filter (DPF) product tests.
Challenge: Because the diesel engine used for testing the soot-loading capabilities of the DPF system is designed to operate as efficiently as possible, the time required to fill the filter approached several hours. The stock ECU supplied with the test engine could not be recalibrated to run the "dirty" cycles needed to increase soot production. The only way to speed up testing was by bypassing engine sensors and tricking the ECU to make the engine run inefficiently, while still keeping the ECU happy.
Solution: A&D supplied an ADX-based diesel engine control system to replace the stock ECU. The ADX provided flexiblity for test engineers to control the diesel engine in a manner that produced soot at a much faster rate, and therefore significantly shortened the test cycle times. Control of the Fuel Pulse Width, Rate of Injection, BOI Phasing, and Injection Pressure were all easily set through the existing test cell data acquisition and control interface. As a result, test time, development time and costs were drastically reduced.
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