Closed Loop Electromagnetic Valve Actuation Motion Control on a Single Cylinder Engine

Seethaler, Rudolf; Koch, Charles Robert; Chladny, R.R.; Mashkournia, Masoud

doi:10.4271/2013-01-0594

Cited by 13 publications

(4 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One of the challenges of electromagnetic actuators used in an internal combustion engine's valve train is the robust valve needle movement control to achieve smooth closure under different operating conditions. This issue was addressed in paper [40], which describes laboratory tests of the effects of different algorithms on the valve stalling and valve seat impact. The study involved testing of two valve movement controllers in a single-cylinder internal combustion engine.…”

Section: Electromagnetic Actuator Parametersmentioning

confidence: 99%

Improving the Efficiency of Spark-Ignition Internal Combustion Engine Using a Novel Electromagnetic Actuator and Adapting Increased Compression

et al. 2023

View full text Add to dashboard Cite

This paper presents an empirical study of a spark-ignition internal combustion engine with modifications made to increase its effectiveness. The modification was implemented bi-directionally in terms of changes to the compression ratio and changes to the engine’s valve train. The compression ratio was increased by 2.3 units by design and a hybrid intake valve opening control was used in the engine’s valve train. The hybrid control involved autonomous control of one of the inlet valves with a dedicated electromagnetic actuator. The designed electromagnetic actuator was mounted downstream of the single-cylinder engine’s intake system’s modified camshaft to control the effective compression pressure build-up. Field calculations were carried out for the electromagnetic actuator’s design variants and its current characteristics were determined. The multivariate calculations were carried out in order to find the quasi-optimal geometry of the actuator. The width and height of magnetic field coils and the dimensions of the stator poles were changed, while maintaining the same external dimensions of the actuator to enable its mounting in the cylinder head system. In the next step, the prototype of the actuator was made and placed on the combustion engine in order to conduct the experimental investigations. The work was aimed at improving the internal combustion engine’s efficiency at the low load range, as this is load range in which it has low efficiency despite it being the most often used during normal vehicle operation. The original measurement stand was prepared, and many tests were carried out in order to investigate the influence of the electromagnetic valve on the combustion engine characteristic. This improved the internal combustion engine’s efficiency at its low-load range by up to 25%. Both calculation and measurement results are presented in form of graphs.

show abstract

Section: Electromagnetic Actuator Parametersmentioning

confidence: 99%

Improving the Efficiency of Spark-Ignition Internal Combustion Engine Using a Novel Electromagnetic Actuator and Adapting Increased Compression

et al. 2023

View full text Add to dashboard Cite

show abstract

“…The main control goal of EMVA system is to achieve fully variable and precise motion control in spite of the various disturbance. Furthermore, soft landing control is required for the controller in order to guarantee working life of the gas regulating valve and reduce the working noise [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

A novel active disturbance rejection controller for an electromagnetic valve actuator

Chang

2018

MATEC Web Conf.

View full text Add to dashboard Cite

In order to achieve fully variable and precise motion control of the electromagnetic valve actuator, enhance the engine performance, a novel active disturbance rejection controller for an electromagnetic valve actuator based on trajectory planning and acceleration feedforward is proposed. A fourth-order trajectory planning is used to achieve fully variable valve motion control, including variable valve lift and timing. It can also reduce the impact and vibration of EMVA system. Active disturbance rejection controller is used to estimate the variant dynamic and external disturbances of the system. The acceleration feedforward is compensated for the system to improve the tracking and steady state accuracy. Comparative simulations results show the proposed controller can improve the dynamic performance and the robustness of the system, and enhance the control precision.

show abstract

“…Electro-mechanical valve actuators (EMVA) are considered a technological solution for implementing advanced variable valve actuation (VVA)-based engine management strategies in camless engines [1][2][3][4][5][6][7]. The system considered here and depicted in Fig.…”

Section: Introductionmentioning

confidence: 99%

Cycle‐by‐Cycle Adaptive Force Compensation for the Soft‐Landing Control of an Electro‐Mechanical Engine Valve Actuator

Gaeta¹,

Velasco²,

Montanaro³

2014

Asian Journal of Control

View full text Add to dashboard Cite

Electro-mechanical valve actuators (EMVA) are a solution for implementing variable valve actuation in internal combustion engines. Their use can increase engine power, reduce fuel consumption and pollutant emissions, while significantly improving engine efficiency. The control of this actuator is a complex task since non-smooth nonlinearities, parameter variations and external forces strongly affect plant dynamics. In addition, the impact of the valve at its end-strokes translates into mechanical wear and unacceptable noise, and in the worst case the electromagnet may also fail to catch the valve, causing system failure. The design of effective control strategies to ensure valve capture with low impact velocities is therefore essential for the correct functioning of such a mechatronic device. In this paper, the control problem of reducing the impact velocity at "landing" known in the literature as soft landing control, is tackled via novel cycle-by-cycle adaptive force compensation control algorithms. Two schemes are presented: a discrete adaptive proportional integral controller to regulate landing velocity to a preassigned set-point, and a gradient descent method based controller to automatically achieve the minimum admissible impact velocity. The effectiveness of both methods in limiting landing velocities is shown numerically using a high predictive simulator of the EMVA system, when considering unknown varying environmental conditions, such as internal friction and external gas pressure forces.

show abstract

Closed Loop Electromagnetic Valve Actuation Motion Control on a Single Cylinder Engine

Cited by 13 publications

References 19 publications

Improving the Efficiency of Spark-Ignition Internal Combustion Engine Using a Novel Electromagnetic Actuator and Adapting Increased Compression

Improving the Efficiency of Spark-Ignition Internal Combustion Engine Using a Novel Electromagnetic Actuator and Adapting Increased Compression

A novel active disturbance rejection controller for an electromagnetic valve actuator

Cycle‐by‐Cycle Adaptive Force Compensation for the Soft‐Landing Control of an Electro‐Mechanical Engine Valve Actuator

Contact Info

Product

Resources

About