Model-based estimation of piezoelectric fuel injector parameters

Pietrzak, Bradley W.; Le, Dat; Shaver, Gregory M.

doi:10.1109/acc.2014.6859007

Cited by 1 publication

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The gains were tuned so that the tracking error and the overshoot would decrease. Equations explaining the observer dynamics are given in (11), (12), and (13).…”

Section: High Gain Observer For Velocity Estimationmentioning

confidence: 99%

“…10,11 Also, the injection efficiency was improved by utilizing a model-based approach to estimate the parameters of the piezoelectric actuators that control the injection process. 12 Due to the discrete nature of electromagnetic solenoid actuators, which are widely used as an alternative to piezoelectric actuators, displacement can be controlled using continuous switching control. But doing this robustly without using a sensor is challenging.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mass flow rate control of solenoid-based injectors

Qureshi,

Kara,

Ertunç

et al. 2023

International Journal of Engine Research

View full text Add to dashboard Cite

This paper presents a mass flow rate control method for solenoid-based injectors in open-loop, that is, without physical sensor feedback. Measuring the mass flow rate in injectors is important because the performance of the injector determines fuel consumption and emissions. While it is possible to perform this control using different types of sensors, this would increase the cost and reduce the reliability. With this study, it was aimed to control the mass flow rate of solenoid-based injectors using continuous switching control to regulate the injector’s needle displacement without using sensors. For this purpose, a solenoid-actuated injector prototype was created. Model-based estimators were used to determine the states of the injector, while a super-twisting sliding mode controller was used to track the desired mass flow rate references. The results of the experiments showed that tracking for sinusoidal, triangular, and square trajectories yielded a mass flow rate percent error of less than 1.06. The proposed open-loop control algorithm can be used to track different mass flow rate references in internal combustion engines.

show abstract

“…The gains were tuned so that the tracking error and the overshoot would decrease. Equations explaining the observer dynamics are given in (11), (12), and (13).…”

Section: High Gain Observer For Velocity Estimationmentioning

confidence: 99%