| ANALYSIS OF PARALLEL PROCESSING EFFECTS THROUGH A CO-PROCESSOR IN DIESEL ENGINE MANAGEMENT SYSTEM |
| J. SOHN1, S. HONG1, I. PARK1, J. KWON2, W. LEE3, M. SUNWOO1 |
1Hanyang University
2Hyundai MOBIS
3Changwon National University |
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| ABSTRACT |
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We show that computational load can be reduced when a programmable co-processor is used for a time-critical system design. We analyze the real-time performances of a diesel engine management system by applying a programmable timer co-processor. In order to verify the performances caused by the co-processor, we investigated the timing parameters such as the process time, execution period, and processor utilization, according to a changing task structure. The processor utilizations of the tasks were found to be reduced within the range of 0.65% to 33.68% on worst-case execution period condition. These results show that an appropriate task construction considering the co-processor characteristics can lead to improvement in real-time performance from parallel processing on par with a multicore processor system even under limited conditions. |
| Key Words:
Co-processor, Diesel engine, Engine management system, Fuel injection system, Processor utilization, Time processor unit |
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