Dynamic Rise of Pressure in the Common-Rail Fuel Injection System

Catalano, L. A.; Tondolo, V. A.; Dadone, A.

doi:10.4271/2002-01-0210

Cited by 38 publications

(21 citation statements)

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“…In order to facilitate optimisation and limit the number of experiments, numerical modelling analyses are used. Scientific literature describes numerous modelling tests of fuel system elements [5,6,7,8] as well as entire injection systems [9,10,11,12,13]. By way of illustration, [5] investigated the effect of multiphase injection on the emission of particulate matter and nitrogen oxides, works [6,7] included micro and macroscopic dynamic phenomena accompanying multiphase injection, whereas [8,11,14] the effect of cavitation on flow loss.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of a Fuel Pump for an Aircraft Diesel Engine

Sochaczewski

Szlachetka²

2019

MATEC Web Conf.

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The paper reports on the process of modelling a high-pressure common rail pump designed to supply a two-stroke compression-ignition engine, which includes the presentation of methodology for model construction and results of simulation tests. A one-dimensional model of the pump was developed in the AVL Hydsim environment. A single-section positive displacement pump driven by a double cam was used for modelling. The developed model enables simulation of pump operation in various conditions defined by shaft speed, pumping pressure, settings of pump executive elements as well as fuel properties. The obtained results were compared with the results of bench tests and theoretical calculations. The analysis included the flow rate fuel overflow and changes in pumping pressure depending on the fuel dispenser settings. The model will also be used to build a complete fuel supply system model consisting of an injector model, a rail model and a control system model. The research is carried out with a view to optimising individual components and the operation of the entire supply system, taking into account the regulation of pumping pressure and synchronisation of the pumping process with fuel injection cycles.

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Section: Introductionmentioning

confidence: 99%

Numerical Analysis of a Fuel Pump for an Aircraft Diesel Engine

Sochaczewski

Szlachetka²

2019

MATEC Web Conf.

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“…Control oriented models with simplified structures were developed [7][8], but most of the papers describe injector operation in a detailed manner. However, the latter mostly included only mechanical and fluid dynamical parts [9][10][11][12][13]. Publications rarely contain the electromagnetic circuit of the solenoid, but the work of Bianchi et al stands out [14][15][16][17], as a complete, detailed and validated CR injector.…”

Section: Introductionmentioning

confidence: 99%

Detailed Model of a Common Rail Injector

Vass

Zöldy

2019

Acta Universitatis Sapientiae, Electrical and Mechanical Engineering

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This work is about the validation of a Common Rail (CR) injector model. The model describes injector internal behavior in a detailed way, validation is done using dosage measurements and needle lift traces. The model contains fluid dynamic, mechanic and electro-magnetic parts describing all important internal processes. To compare the modelling results against measurement data, three test cases were chosen on a medium duty test engine to represent a wide range of operation points. Dosage measurements were done by averaging the injected mass of 1500 injections, each measurement repeated three times. Needle displacement was measured using an injector equipped with a needle lift sensor in the same operating points. The results of the simulated injector and the measured values showed good conformity both in needle displacement and injected fuel mass, so the model can be a basis for further injector and combustion analyses.

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“…Many common-rail injector models are reported in the literature. (Amoia et al, 1997;Bianchi et al, 2000;Brusca et al, 2002;Catalano et al, 2002;Ficarella et al, 1999;Payri et al, 2004). One of the older common-rail injector model was presented in (Amoia et al, 1997) and successively improved and employed for the analysis of the instability phenomena due to the control valve behaviour (Ficarella et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

“…The elastic deformation of the moving injector components were considered, but the injector body was treated as a rigid body. The models in (Brusca et al, 2002;Catalano et al, 2002) were very simple models. The aims in (Catalano et al, 2002) were to prove that pressure drops in an injection system are mainly caused by dynamic effects rather than friction losses and to analyse new common-rail injection system configurations in which the wave propagation phenomenon was used to increase the injection pressure.…”

Section: Introductionmentioning

confidence: 99%

“…The models in (Brusca et al, 2002;Catalano et al, 2002) were very simple models. The aims in (Catalano et al, 2002) were to prove that pressure drops in an injection system are mainly caused by dynamic effects rather than friction losses and to analyse new common-rail injection system configurations in which the wave propagation phenomenon was used to increase the injection pressure. The model in (Brusca et al, 2002) was developed in the AMESim environment and its goal was to give the boundary conditions to a 3D-CFD code for spray simulation.…”

Section: Introductionmentioning

confidence: 99%

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