Experimental Investigation of Dynamics Effects on Multiple-Injection
                    Common Rail System Performance

Catania, Andrea; Ferrari, Alessandro; Manno, Michele; Spessa, Ezio

doi:10.1115/1.2835353

Cited by 115 publications

(51 citation statements)

References 11 publications

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“…In fuel injection system, P1 is delivery chamber pressure, P2 is cylinder pressure. Because P2<<P1, so P1-P2 P1, cycle fuel injection quantity is related to the integral value of P1 in injection pulse width [6].…”

Section: Figure 5 Fluctuation Of Mifq With Dtmentioning

confidence: 99%

Decoupling Analysis on Pressure Fluctuation and Needle Valve Response for High Pressure Common Rail Injector

2017

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In the process of multiple injections, the influence of different injections makes the controlling of cycle fuel injection quantity more difficult. The high pressure common rail (HPCR) simulation model is established in AMESim environment. Through the method of combining numerical simulation and experiment test, it is found that the strong coupling of pressure fluctuation and needle valve response is the fundamental reason, which leads to the fluctuation of main injection fuel quantity (MIFQ) with dwell time (DT). The result shows that the largest fluctuation quantity is 3.6mm3 when the reference value of main injection is 60.0mm3. Non-damping LC hydraulic system model is also established. Through the analysis of the model, reducing the length-diameter ratio of internal oil duct and the delivery chamber volume are decoupling methods to the strong coupling.

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Section: Figure 5 Fluctuation Of Mifq With Dtmentioning

confidence: 99%

Decoupling Analysis on Pressure Fluctuation and Needle Valve Response for High Pressure Common Rail Injector

2017

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“…The significant results were obtained in [17,18], where improvements in the process of controlling of the pressure in the system use models of hydraulic valves with an electromagnetic actuator. Fundamental aspects of the CR fuel injection system dynamics were investigated, paying special attention to the wave propagation induced by pressure oscillations and to its connections with the system control parameters and multiple-injection performance [19]. The analysis of the system oscillation behavior was carried out with the support of a simple lumped parameters model, which makes impossible to study the processes in the hydro mechanical control valve.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Processes Into Electro-Hydraulic Valves of an Engine’ Fuel System

Vrublevskyi¹

2019

mech

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“…The main benefits are a more efficient air-fuel mixing process and a better control of multiple injection strategies with the piezoelectric-actuated injectors than with the solenoid technology. In common-rail injection systems, the dynamic phenomena occurring such as pressure-wave propagation had been shown to be effective on the mass injected by [8] when multiple injections were used.…”

Section: Introductionmentioning

confidence: 99%

Piezo-actuated common rail injector structure and efficient design

Köten

Gunes

Guner

2018

Journal of Energy Systems

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Piezo-actuated common rail injectors are often utilized in today's automobile engines' fuel systems. This high-tech instrument decreases fuel consumption, thereby harmful exhaust emissions are also lowered especially in diesel ignition engines. Owing to ultra-high pressure in piezo-injection systems, fuel droplets are scaled down into a smaller particle form and thus provided more efficient combustion. Pulverized fuel droplets are evaporated and oxidized in a very short time and they provide exact combustion inside the combustion chamber. In this study, numerical simulation of a piezo-actuated common rail injector fluid-mechanical model with detail is demonstrated. The hydraulic and mechanical component interaction is modeled through the fluid-mechanical components. Thus, the piezo injector dynamics are predicted based on the geometry and the physical quantities describing the equipment. Input voltage in the entrance is used to describe the piezo actuator force for piezo-electric material. In model, fuel flows from the common rail to a tee that separates the flow into two paths: fuel gallery and valve with the inlet orifice. Using this detailed model, behavior of the piezo injector, effects of the injector parameters on the fuel flow were investigated numerically and results were represented.

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Experimental Investigation of Dynamics Effects on Multiple-Injection Common Rail System Performance

Abstract: Fundamental aspects of Common Rail (CR) fuel-injection-system dynamics

Cited by 115 publications

References 11 publications

Decoupling Analysis on Pressure Fluctuation and Needle Valve Response for High Pressure Common Rail Injector

Decoupling Analysis on Pressure Fluctuation and Needle Valve Response for High Pressure Common Rail Injector

Modeling of Processes Into Electro-Hydraulic Valves of an Engine’ Fuel System

Piezo-actuated common rail injector structure and efficient design

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