Compensating combustion forces for automotive electromagnetic valves

Zhao, Junfeng; Seethaler, Rudolf

doi:10.1016/j.mechatronics.2010.03.003

Cited by 23 publications

(22 citation statements)

References 18 publications

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“…With the advantage feature of short response time, the electromagnetic valve is commonly used as the main control device gradually in hydraulic control systems. 22 It is mainly formed by an armature, a coil, a spool, and a spring, as shown in Figure 2.…”

Section: Electro-hydraulic Braking System Modelmentioning

confidence: 99%

Investigation of energy efficiency for electro-hydraulic composite braking system which is based on the regenerated energy

Lin

Chen

et al. 2016

Advances in Mechanical Engineering

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A novel structure of the combined braking system based on the regenerative braking energy has been proposed to achieve simplified structure and energy-saving capability simultaneously, which includes the hydraulic regenerative braking system, electro-hydraulic braking system, and the power coordinate module. Theoretical contributions and managerial implications of the developed system are discussed. The corresponding mathematic models are developed, a fuzzy control method which can fulfill the power coordinate between the high-pressure and low-pressure accumulators is proposed, and the correctness of the model is verified with the utilization of the test bench. The dynamic characteristics and efficiency are further investigated in various parameters based on MATLAB/Simulink, such as the vehicle initial braking speed, the upper pressure, the liquid capacity, and the state-of-charge (SOC) of the regenerative braking accumulator. The results of the simulations which provide strong evidence for the liquid capacity and initial SOC of the regenerative braking accumulator are the key factors that affect the energy recovery efficiency, and the initial braking speed is the key point that affects the total energy. The results can provide analytical references to practical applications.

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Section: Electro-hydraulic Braking System Modelmentioning

confidence: 99%

Investigation of energy efficiency for electro-hydraulic composite braking system which is based on the regenerated energy

Lin

Chen

et al. 2016

Advances in Mechanical Engineering

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“…The essence of GDI injector is a kind of high precision and powerful high-speed solenoid valve, which converts electrical energy into mechanical energy associated with linear motion [14]. The structure of GDI injector mainly composed of armature, core, yoke, yoke ring, coil, deflection tube, valve stem, valve seat and other components.…”

Section: Structure and Working Principle Of Gdi Injectormentioning

confidence: 99%

Simulation and analysis on electro-magnetic- thermal coupling of solenoid GDI injector

Cheng

Zhang

Guo

et al. 2014

International Journal of Applied Electromagnetics and Mechanics

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The GDI (Gasoline Direct Injection) injector is influenced by electro-magnetic-thermal coupling, and has strong nonlinearity and coupling. Temperature rise greatly impacts the performance of the GDI injector and makes the ECU of the engine difficult to control fuel injection quantity accurately. According to the coupling relationship of electric, magnetic and thermal subsystems of the GDI injector, the physical model of coupled process was established. The energy loss and transformation of the GDI injector in work process was explored, and revealed that the energy loss in electromagnetic conversion was a key factor to cause the GDI injector temperature rise. The energy loss coming from electromagnetic conversion was regarded as heat source. The temperature field of the GDI injector contains heat conduction and thermal radiation was analyzed based on the finite element theories. By using the ANSYS software to simulate multiple physical fields of the GDI injector, and then experiment method to verify the simulation results, distribution characteristics of temperature field and variations of temperature rise effect on the performance of the GDI injector was analyzed. The results show that, higher temperature rise is concentrated on coil and core part and with the higher temperature rise the response time of the GDI injector get longer, the fuel injection quantity becomes less. The value and pulse width of the holding current I have great impact on the GDI injector performance and temperature rise.

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“…There is however no report about the constraints on source voltage, current, etc. References [10] and [14] present a somewhat similar energy-based solution to approach control problem. Reference [10] estimates the gas force and then compensates for the work done by this force.…”

Section: A Control Problemmentioning

confidence: 99%

“…This approach needs a disturbance observer. Reference [14], in a similar approach, develops a heuristic model for gas force and compensates it where it just needs the values of position and velocity. They both consider only one source of disturbance and in a feedforward configuration have no compensation against other varying disturbance sources.…”

Section: A Control Problemmentioning

confidence: 99%

Approach control of an electromechanical valve actuator using closed-loop iterative learning control

Samadi

Saif

2011

IEEE Conference on Decision and Control and European Control Conference

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Electromechanical valves (EMV) are a promising alternative to camshafts in internal combustion (IC) engines. This paper is mainly concerned with the control of EMVs to achieve a soft landing. Due to the nature of the process, control of the valve is normally accomplished in two phase. This paper addresses the control problem over the first phase, namely "the approach control", where the control authority over the system is very low. Repetitiveness of the process and low control authority suggest iterative learning control (ILC) as an appealing solution. An ILC law that exploits the benefits of both feedforward and feedback approaches is proposed for this problem. Also, an iterative method for characterization and generation of the desired trajectory is provided. The effectiveness of the proposed approach controller is demonstrated through simulation studies.

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Compensating combustion forces for automotive electromagnetic valves

Cited by 23 publications

References 18 publications

Investigation of energy efficiency for electro-hydraulic composite braking system which is based on the regenerated energy

Investigation of energy efficiency for electro-hydraulic composite braking system which is based on the regenerated energy

Simulation and analysis on electro-magnetic- thermal coupling of solenoid GDI injector

Approach control of an electromechanical valve actuator using closed-loop iterative learning control

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