Evaluation of Degradation Behavior of EGR-Cooler Performance and Deposits Characterization

EGR クーラの性能劣化挙動および堆積物の評価

Degradation of heat transfer performance of EGR-Cooler by soot deposition was evaluated. To evaluate exhaust gas flow effect, two types of EGR-Cooler, which had different shape of spiral tube, were compared using fouling test of JE05 mode. Cold-Start and Hot-Start fouling test were adapted to investigate the influence of warm-up condition on EGR-Cooler performance. In Hot-Start JE05 fouling test, EGR-Cooler performance was degraded but it could be recovered by a Cold-Start JE05 operation. Properties of deposits after fouling test under various engine conditions were characterized. Using the characterization results of deposits, degrading and recovering behavior of EGR-Cooler performance was discussed.排ガス流路形状の異なる2種類のEGRクーラについてすす堆積試験を行い,すす堆積後の熱交換性能を評価した.またホットスタートとコールドスタートの複合試験を実施し,エンジンの運転状態が熱交換性能に与える影響を調査した.さらに堆積したすすの分析を行い,エンジン運転条件とすすの性状の関係を考察した.


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  • Accession Number: 01666886
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: Jan 31 2018 3:16PM