Concept of a pump for diesel engines fuel supply using hypocycloid drive

International Automotive Conference 2018

Mateusz, Bor^1 ; Tomasz, Borowczyk^1 ; Wojciech, Karpiuk^1 ; Mikolaj, Spadlo^1 ; Rafal, Smolec^1

Poznan University of Technology, Piotrowo 3 Str., Pozna

61-138, Poland^1

关键词: Fuel supply;    High pressure injection system;    Injection pump;    Lateral force;    Multicylinder engine;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/421/4/042034/pdf
DOI  :  10.1088/1757-899X/421/4/042034

来源: IOP

【 摘 要 】

Detailed analysis of modern injection pumps used for diesel engines fuel supply shows that for the most part these structures are far from ideal. Therefore authors of the article proposed a completely novel injection pump construction, which uses hypocyclic gears to drive the piston. The purpose of this article is to present this construction. In relation to existing, classic solutions using a cam drive, the construction of the hypocycloid pump is characterized by the minimization of lateral forces at the interface between the piston and the cylinder of the pump section - this aspect is proven in the article. It is also possible to separate the pressing function from the lubrication function in the pump. In addition - the high stroke of the piston in relation to the dimensions of the pump has a positive effect on the output, enabling reduction of the number of pumping sections even in multi-cylinder engines. In the opinion of the authors, this pump is part of the latest trends related to the construction of high-pressure injection systems.