Dynamic Modeling of a Piezoelectric Actuated Fuel Injector

Satkoski, Chris A.; Shaver, Gregory M.; More, Ranjit; Meckl, Peter H.; Memering, Douglas; Venkataraman, S.; Syed, Jalal; Carmona-Valdes, Jesus

doi:10.1115/1.4003095

Cited by 21 publications

(6 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The constitutive relations in the transverse direction of a piezoelectric stack are shown in (1) and (2). These couple the mechanical and electrical response of a stacked piezoelectric material [42][43][44][45][46][47].…”

Section: Electromechanical Model Of the Piezoelectric Subsystemmentioning

confidence: 99%

Using feedback control to actively regulate the healing rate of a self-healing process subjected to low cycle dynamic stress

Kuponu

Kadirkamanathan

Bhattacharya

et al. 2016

Smart Mater. Struct.

View full text Add to dashboard Cite

Abstract. Intrinsic and extrinsic self-healing approaches through which materials can be healed generally suffer from several problems. One key problem is that to ensure effective healing and to minimise the propagation of a fault, the healing rate needs to be matched to the damage rate. This requirement is usually not met with passive approaches. An alternative to passive healing is active self-healing, whereby the healing mechanism and in particular the healing rate, is controlled in the face of uncertainty and varying conditions. Active self-healing takes advantage of sensing and added external energy to achieve a desired healing rate. To demonstrate active self-healing, an electrochemical material based on the principles of piezoelectricity and electrolysis is modelled and adaptive feedback control is implemented. The adaptive feedback control compensates for the insufficient piezo-induced voltage and guarantees a response that meets the desired healing rate. Importantly, fault propagation can be eliminated or minimised by attaining a match between the healing and damage rate quicker than can be achieved with the equivalent passive system. The desired healing rate is a function of the fault propagation and is assumed known in this paper, but can be estimated in practice through established prognostic techniques.

show abstract

Section: Electromechanical Model Of the Piezoelectric Subsystemmentioning

confidence: 99%

Using feedback control to actively regulate the healing rate of a self-healing process subjected to low cycle dynamic stress

Kuponu

Kadirkamanathan

Bhattacharya

et al. 2016

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…This is due to the optimal shaping of the high-pressure direct fuel injection strategy, implemented with a highly flexible and multiple division of the dosed fuel during a single diesel engine cycle. This is essential from the point of view of reducing fuel consumption as well as reducing noise emissions and the toxicity of exhaust fumes [13,21,22]. Due to the above considerations, piezoelectric fuel injectors are offered by all major manufacturers of fuel injection equipment.…”

Section: Introductionmentioning

confidence: 99%

Problems of regeneration of modern piezoelectric fuel injectors

Stoeck¹

2022

Combustion Engines

View full text Add to dashboard Cite

The paper presents a method of testing piezoelectric fuel injectors in modern common rail systems, which allows them to be repaired almost to the full extent. The obtained results indicate that this process can be effectively carried out, even taking into account the existing technological limitations. The most important stages of the implemented activities are specified, first of all the scope of required maintenance activities in the pre- and post-assembly stages, as well as the types of diagnostic tests carried out on separate test benches. Although the presented analysis concerns a specific example, individual conclusions and observations can be applied to fuel injectors from other manufacturers, in which the actuator is not replaceable.

show abstract

“…For example, Jinwook Lee [ 11 ] established a linear mathematical model of a piezoelectric actuator based on the classical piezoelectric equation, and then established a mathematical model of the piezoelectric injector using AMESim to analyze the needle valve response and injection rate. Chris A. Satkoski [ 12 ] and Poulyaev [ 13 ] established a mathematical model of the injector that included a piezoelectric actuator linear model to calculate the injection time and rate. In the application process, the above models either have low-simulation accuracy, difficult parameter identification, or require a large number of test data for support.…”

Section: Introductionmentioning

confidence: 99%

Study of the Influencing Factors on the Small-Quantity Fuel Injection of Piezoelectric Injector

Liu

Liu²,

Liu

2022

Micromachines

View full text Add to dashboard Cite

The piezoelectric injection-system provides a reliable approach for precise small-quantity fuel injection due to its fast, dynamic response. Considering the nonlinearity of a piezoelectric actuator, the complete electro-mechanical-hydraulic model of the piezoelectric injector was established and verified experimentally, which showed that it could accurately predict the fuel injection quantity. The small-quantity fuel injection with different driving voltages, pulse widths, and rail pressures was analyzed. The effects of key structural parameters of the injector on the delivery, control-chamber pressure fluctuation, and small-quantity injection characteristics were studied. The results show that the linearity of the curve of the injection volume with the pulse width was relatively poor, and there was a significant inflection point when the piezoelectric injector worked in the small pulse width region (PW < 0.6 ms). The bypass valve significantly accelerated the establishment of the control-chamber pressure, reduced the pressure fluctuation in the chamber, shortened the closing delay and duration of the needle valve, and reduced the rate of the fuel-quantity change so that it provided a greater control margin for the pulse width over the same fuel volume change interval. Under the condition of a small-quantity fuel injection of 20 mm3, decreasing the inlet orifice diameter and increasing the outlet orifice diameter shortened the minimum control pulse width and fuel injection duration required for the injector injection, which is beneficial for multiple and small-quantity fuel injection. However, these behaviors reduce the control margin for the pulse width, especially in small pulse width regions.

show abstract

Dynamic Modeling of a Piezoelectric Actuated Fuel Injector

Cited by 21 publications

References 14 publications

Using feedback control to actively regulate the healing rate of a self-healing process subjected to low cycle dynamic stress

Using feedback control to actively regulate the healing rate of a self-healing process subjected to low cycle dynamic stress

Problems of regeneration of modern piezoelectric fuel injectors

Study of the Influencing Factors on the Small-Quantity Fuel Injection of Piezoelectric Injector

Contact Info

Product

Resources

About