【作者】

José Geiger

【摘要】

该论文已在赫尔辛基举行的第28届CIMAC大会上发表，论文的版权归CIMAC所有。Due to ecological as well as economic reasons large size gas engines - especially within the medium speed range are gaining increasing interest. In addition to the already established power generation application, these types of engines are of increasing interest for marine or rail propulsion as well. Besides the obligatory fulfillment of the stringent emission legislation, the achievable fuel efficiency level is a key factor for the final customer. The present publication analyzes and describes the requirements given by the specific applications of large bore gas engines. Based on this, the particular challenges of their combustion system layout can be derived. Compared to passenger car or commercial vehicle engines, this requires a distinctly different conception. The paper is focused on the description of the development of a pre-chamber combustion system at FEV. For this, the combination of the well-established Charge Motion Design (CMD) process with experimental work on a single cylinder engine could be realized successfully. By the CMD supported layout of the pre-chamber, the development process could be shortened significantly due to the reduced number of variants in the test program. The excellent combustion stability of the optimized system allows BMEP levels in the range of 30 bar. By means of parameter variations the very good correlation between simulation and experimental results as well as the effect of different prechamber layouts can be shown. This is a basic prerequisite for a target oriented combustion system development.

【会议名称】

第28届CIMAC会议

【会议地点】

芬兰 赫尔辛基

【下载次数】

2

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