In present study, engine exhaust was sampled for measurement and analysis of unregulated emissions from a four cylinder transportation diesel engine using a state-of-the-art FTIR (Fourier transform infrared spectroscopy) emission analyzer. Test fuels used were Karanja biodiesel blend (B20) and baseline mineral diesel. Real-time emission measurements were performed for raw exhaust as well as exhaust sampled downstream of two in-house prepared non-noble metal based diesel oxidation catalysts (DOCs) and a baseline commercial DOC based on noble metals. Two prepared non-noble metal based DOCs were based on Co-Ce mixed oxide and Lanthanum based perovskite catalyst. Perovskite based DOC performed superior compared to Co-Ce mixed oxide catalyst based DOC. Commercial noble metal based DOC was most effective in reducing unregulated hydrocarbon emissions in the engine exhaust, followed by the two in-house prepared non-noble metal based DOCs.

中文翻译：

---

装有非贵金属催化的柴油氧化催化剂以控制不受控排放的生物柴油燃料运输发动机的性能评估

在本研究中，使用最先进的FTIR（傅里叶变换红外光谱）排放分析仪对发动机排气进行采样，以测量和分析四缸运输柴油机的不规则排放。使用的测试燃料为Karanja生物柴油混合物（B20）和基准矿物柴油。对原始废气以及两个内部准备的非贵金属基柴油氧化催化剂（DOC）和基于贵金属的基准商业DOC下游采样的废气进行了实时排放测量。两种基于Co-Ce混合氧化物和镧基钙钛矿催化剂制备的非贵金属基DOC。钙钛矿基DOC的性能优于Co-Ce混合氧化物催化剂基DOC。