Influence of sealing gasket distortion on diesel engine injection pump mounting

Bulletin of the Polytechnic Institute of Iași. Machine Constructions Section

Bujoreanu

2021

The sealing gaskets are mechanical systems that seal and fill the gap between two or more jointed surfaces. The gasket have been created and designed to prevent leaks that can occur between surfaces subjected to compression and also, to prevent contamination with dust, mud or other impurities from outside of the system. The applicability area of these gaskets has increased visibly and they are currently used in a full range of equipment, such as mechanical transmissions, machines for terrain works, equipment production, etc. The way that seals help to fix and connect the mechanical assemblies, their stress resistance and their durability over the time have been studied by literature. The paper presents the influence of the components assembly in a high-pressure pump and its impact on sealing. Using the Taylor Hobson measurement system and scanning electron microscopy we were able to find out the composition of the gasket studied and determine the dimensional variations, mainly due to the assembly process.

“…From Fig. 1, we can see the order of the components from which is built a high pressure pump (Bistriceanu and Bujoreanu, 2019a;2019b).…”

Section: Methodology and Materialsmentioning

confidence: 99%

Section: Methodology and Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Investigation on Assembly Process for High Pressure Injection Pump Components

Bulletin of the Polytechnic Institute of Iași. Machine Constructions Section

Bujoreanu

2021

Influence of tightening screws process in high-pressure injection pump

IOP Conf. Ser.: Mater. Sci. Eng.

Pal

Alaci

et al. 2020

The high-pressure pump is a component of the automotive common-rail system and has as main assemblies: housing, driveshaft, gaskets and front plate. Literature presents analyses of the threaded fastening assemblies, especially for those with the critical joints with screws, those involving torque and angle. The assembly process that we have studied performs the sealing of the components with the gasket through the screws, thus preventing the fuel from leaking from the pump. Our paper presents an analysis of the influence of the tightening process with screws of the housing, gasket and front plate. The experiment was conducted using the Zeiss measuring system and the screwdriver Janome. The tests analysis demonstrates that screwing process can influence the distortion.

Study on the sealing defects impact on high pressure pump

IOP Conf. Ser.: Mater. Sci. Eng.

Pal

Ciornei

et al. 2020

The sealing of the high-pressure pump is carried out by means of a seal between the pump drive shaft and the front plate to keep the fuel inside them. The literature presents numerous studies carried out on how these seals last in time and on their composition. Due to the fact that during assembly or during the mounting of the pump on the engine may occur accidental defects on the sealing area, our interest in this paper is to investigate their impact on pump operation. The damages were explored on a test bench a certain number of kilometres and later analysed their impact on the pump using an ultraviolet chamber in a dark room. The experimental analyses were carried out using the EvoCam optical microscope, but also with the help of computer tomography procedure.