Compression ignition engines are the dominant tools of the modern human life especially in the field of transportation. But, the increasing problematic issues such as decreasing reserves and environmental effects of diesel fuels which is the energy source of compression ignition engines forcing researchers to investigate alternative fuels for substitution or decreasing the dependency on fossil fuels. The mostly known alternative fuel is biodiesel fuel and many researchers are investigating the possible raw materials for biodiesel production. Also, hydrogen fuel is an alternative fuel which can be used in compression ignition engines for decreasing fuel consumption and hazardous exhaust emissions by enriching the fuel. In this study, influences of hydrogen enrichment to diesel and diesel tea seed oil biodiesel blends (B10 and B20) were investigated on an unmodified compression ignition engine experimentally. In consequence of the experiments, lower torque and higher brake specific fuel consumption data were measured when the engine was fuelled diesel biodiesel blends (B10 and B20) instead of diesel fuel. Also, diesel biodiesel blends increased CO₂ and NO_x emissions while decreasing the CO emissions. Hydrogen enrichment (5 l/m and 10 l/m) was improved the both torque and brake specific fuel consumption for all test fuels. Furthermore, hydrogen enrichment reduced CO and CO₂ emissions due to absence of carbon atoms in the chemical structure for all test fuels. Increasing flow rate of hydrogen fuel from 5 l/m to 10 l/m further improved performance measures and emitted harmful gases except NO_x. The most significant drawback of the hydrogen enrichment was the increased NO_x emissions.

压燃式发动机是现代人类生活的主要工具，特别是在运输领域。但是，越来越多的问题，例如减少柴油燃料的储量和环境影响，这是压燃式发动机的能源，迫使研究人员研究替代燃料以替代燃料或减少对化石燃料的依赖。最知名的替代燃料是生物柴油燃料，许多研究人员正在研究生产生物柴油的可能原料。而且，氢燃料是替代燃料，其可以用于压缩点火发动机中，以通过使燃料富集来减少燃料消耗和有害废气排放。在这项研究中，在未经改装的压燃式发动机上，研究了富氢对柴油和柴油茶籽油生物柴油混合物（B10和B20）的影响。作为实验的结果，当发动机使用柴油生物柴油混合物（B10和B20）代替柴油作为燃料时，测得了较低的扭矩和较高的制动比油耗数据。此外，柴油生物柴油混合物增加了一氧化碳₂和NO _X的排放，同时降低CO排放。氢富集（5 l / m和10 l / m）改善了所有测试燃料的扭矩和制动比油耗。此外，由于所有测试燃料的化学结构中都没有碳原子，因此富氢减少了CO和CO ₂排放。将氢燃料的流量从5 l / m增加到10 l / m进一步改善了性能指标，并排放了除NO _x之外的有害气体。氢气富集的最显著缺点是增加的NO _X排放。