Topic
Solenoid
About: Solenoid is a research topic. Over the lifetime, 19278 publications have been published within this topic receiving 114721 citations.
Papers published on a yearly basis
Papers
More filters
•
14 Jun 1971
TL;DR: In this article, a solenoid for actuating a print wire normally biased against the impact direction by a Wagon Wheel spring is presented, which can accelerate the print wire to the non-printing position.
Abstract: A solenoid for actuating a print wire normally biased against the impact direction by ''''wagon wheel'''' spring means. Energization of the solenoid coil rapidly moves the print wire in the impact direction against the bias of the spring. Release of the energy supplied to the solenoid coil causes very rapid return of the print wire to the non-printing position. The ''''wagon wheel'''' spring structure, which undergoes both bending and twisting in a predetermined sequence, allows for rapid initial acceleration of the print wire in the impact direction while providing for rapid return of the print wire to the non-print position while significantly reducing ''''bouncing'''' or ''''overshooting''''. The components of the solenoid are so designed as to greatly simplify and facilitate assembly while providing highly precise adjustment of the solenoid assembly through the use of components whose tolerances need not be tightly controlled.
29 citations
•
11 Jul 1985
TL;DR: In this paper, an automatic demand chlorination system for use with a recirculation unit for a body of fluid has a chemical therein, and the body has a solenoid unit for actuating the chemical feed unit.
Abstract: An automatic demand chlorination system for use with a recirculation unit for a body of fluid, the body of fluid has a chemical therein. The automatic demand chlorination system comprises a chemical sensing unit for detecting the amount of the chemical and producing a signal, a chemical feed unit for feeding the chemical into the recirculation unit, an electronics unit for controlling the feeding of the chemical, and a solenoid unit for actuating the chemical feed unit. The electronics unit comprises input signal regulation means for receiving the signal of the sensing unit and generating a regulated signal; comparator means for comparing the regulated signal with a predetermined signal representative of the desired amount of the chemical in the recirculation unit and generating a chemical infeed signal; and solenoid timer means for receiving the chemical infeed signal and activating the solenoid unit.
29 citations
••
TL;DR: In this paper, the authors developed a comprehensive nonlinear model of a typical direct acting solenoid valve utilized for clutch control in wet dual-clutch transmissions and validated the model using in situ experimental testing on a powertrain test rig.
Abstract: The purpose of this paper is to develop a comprehensive nonlinear model of a typical direct acting solenoid valves utilized for clutch control in wet dual clutch transmissions. To do so, mathematical models of the integrated electrohydraulic solenoid valve and wet clutch piston assembly are developed in the Simulink environment of Matlab. Through simulation the operating characteristics of the control valve are analyzed, demonstrating that the valve achieves dual functionalities of high flow and accurate pressure control depending on demands. This is realized through the designed force balancing of the valve spool. The dependency of the system to system variables on input pressure and the influence of air content on dynamic response of the valve are investigated. The resilience of output pressure is demonstrated to these variables, indicating strong system reliability. Finally, the model is then validated using in situ experimental testing on a powertrain test rig. The comparison of experimental and simulated results for steady state pressure as well as step and ramp input responses demonstrate good agreement.
29 citations
•
03 May 1994TL;DR: In this paper, an internal combustion engine is equipped with a valve timing controller capable of minimizing the electric power consumption and frictional wear of elements, which can vary the valve timing of valves.
Abstract: An internal combustion engine is equipped with a valve timing controller capable of minimizing the electric power consumption and frictional wear of elements. The valve timing controller can vary the valve timing of valves. A camshaft is moved axially forwardly or rearwardly by electrically energizing an outer solenoid clutch or a brake releasing solenoid, respectively. An axial movement of the camshaft results in a change in valve timing. With the exception of a transient period during which the valve timing is being varied, both the brake releasing solenoid and the outer clutch are electrically deenergized to thereby reduce the electric power consumption, and both of them are maintained out of contact with a displaceable disc 13 to thereby reduce frictional wear thereof.
29 citations
••
TL;DR: In this paper, an experimental setup achievable with current technology of superconducting coils, that produces a phase shift of light of the same order of magnitude as astrophysical signals in ground-based gravitational wave observatories was proposed.
Abstract: The curved spacetime around current loops and solenoids carrying arbitrarily large steady electric currents is obtained from the numerical resolution of the coupled Einstein-Maxwell equations in cylindrical symmetry. The artificial gravitational field associated to the generation of a magnetic field produces gravitational redshift of photons and deviation of light. Null geodesics in the curved spacetime of current loops and solenoids are also presented. We finally propose an experimental setup achievable with current technology of superconducting coils, that produces a phase shift of light of the same order of magnitude as astrophysical signals in ground-based gravitational wave observatories.
29 citations