Development of a new LPG-gasoline injection system for vehicles

由于成本和环境影响的降低以及效率和效果的提高，使用液化石油气(所谓的丙烷)和汽油的车辆最近在世界上的一些地方已经成为可能。由于这些好处，加拿大交通部鼓励开发传统轻型车辆转换为液化石油气的系统。在这个项目中，Delia有限公司将与UOIT由I.Dincer博士领导的研究团队合作，通过NSERC Engage计划进一步开发、改进和优化他们的系统。Delia有限公司开发的系统主要包括一个喷油轨道系统，该系统由轨道内的节流液体液化石油气冷却，从而使燃料以过冷液体的形式分配到喷油器。该团队将与工业合作伙伴密切合作，通过发明和分析各种系统替代方案来改进喷油器轨道设计，例如：i)在轨道中包括气液分离器，ii)将节流液体熏蒸到进气歧管，iii)集成 由车用电池驱动的微型制冷压缩机(耗电量低于20W)将节流燃料返回油箱，并在切换回汽油之前清空钢轨；iv)将热管系统集成到钢轨中，使用液化石油气作为工作流体，从而获得更有效的冷却过程。

Vehicles using LPG (so: called propane) and gasoline have recently become in may parts of the world due to reduced cost and environmental impact and increased efficiency and effectiveness. Due to these benefits, Transport Canada encourages development of conversion system of conventional light duty vehicles to LPG. In this project, Delia Ltd. will work together with UOIT research team led by Dr. I. Dincer to further develop, improve and optimize their system through the NSERC Engage program. The system developed by Delia Ltd consists mainly of an injection rail system which is cooled by throttled liquid LPG inside the rail such that the fuel is distributed as subcooled liquid to the injectors. The team will closely work with the industrial partner to improve the injectors rail design by inventing and analyzing various system alternatives such as: i) including a gas liquid separator into the rail, ii) fumigating the throttled liquid into the intake manifold, iii) integration of a mini-refrigeration compressor driven by vehicle battery (below 20 W consumption) which will return the throttled fuel into the tank and empty the rail prior switching back to gasoline, iv) integration of a heat pipe system into the rail using LPG as working fluid such that a more effective cooling process is obtained.