Abstract: Utilizing an asymmetric magnetic field caused by a mechanism design between a motor rotor and a stator to induce a BEMF, a method for starting a fixed rotation direction of single-phase sensorless DC brushless motor, includes: power-on starting a motor control circuit; if the motor is not in a rotating state before starting the excitation, executing a static starting procedure; then, if the motor rotation direction conforms to a predetermined direction, executing a normal driving procedure; otherwise, executing a static starting procedure. The static starting procedure, by discharging remnant energy of the motor, achieves the purpose of star-up by performing the steps of first phase excitation, stop excitation, and strong second phase excitation. In the normal driving procedure, the slope of BEMF signal of the first phase or the second phase is taken out periodically to detect the motor rotation direction.

Abstract: The invention utilizes an asymmetric magnetic field caused by a mechanism design between a motor rotor and a stator to induce a BEMF, and discloses a method for starting a fixed rotation direction of single-phase sensorless DC brushless motor, including: power-on starting a motor control circuit; if the motor not in the rotating state before starting the excitation, executing a static starting procedure; then, if the motor rotation direction conforming to the predetermined direction, executing a normal driving procedure; otherwise, executing a static starting procedure. The static starting procedure, after of static starting by discharging remnant energy of the motor, achieves the purpose of star-up by performing the steps of first phase excitation, stop excitation, and strong second phase excitation. In the normal driving procedure, the slopes of BEMF signal of the first phase or the second phase is taken out periodically to detect the motor rotation direction.

Abstract: The invention discloses a driving method for single-phase DC brushless motor using sensor only in start-up, comprising: power-up to activate a motor control circuit of a motor; confirming whether the motor is in a rotating state before activation of an excitation? If not, executing a static start-up procedure of using a sensor to detect magnetic poles of the rotor; calculating slope of the BEMF signal to determine the rotation direction of the motor; determining whether the rotation direction of the motor conforming to a predetermined direction; if yes, executing a normal driving procedure; otherwise, executing the static start-up procedure of using a sensor to detect magnetic poles of the rotor. The invention utilizes the present invention utilizes an asymmetric magnetic field caused by a mechanism between a rotor and a stator of a motor to induce a back electromotive force signal and a sensor detection to control rotation direction.

Abstract: A fuel desulfurization method where in the step (a), a fuel is oxidized by adding an ionic liquid, an oxidant, and an acid catalyst. In the step (b), the oxidized fuel is mixed with a desulfurization agent to form a desulfurized fuel. In the step (c), the ionic liquid is recycled. In the recycling step, a first solution is added into the ionic liquid. Then, a second solution is added into the ionic liquid to form a second solution phase and an ionic liquid phase. The second solution phase is separated from the ionic liquid phase. The first solution, the oxidant and the acid catalyst are removed from the remained ionic liquid phase to form a recycled ionic liquid.

Abstract: A fuel desulfurization method is provided in the present invention. In the step (a), a fuel is oxidized by adding an ionic liquid, an oxidant, and an acid catalyst. In the step (b), the oxidized fuel is mixed with a desulfurization agent to form a desulfurized fuel. In the step (c), the ionic liquid is recycled. In the recycling step, a first solution is added into the ionic liquid. Then, a second solution is added into the ionic liquid to form a second solution phase and an ionic liquid phase. The second solution phase is separated from the ionic liquid phase. The first solution, the oxidant and the acid catalyst are removed from the remained ionic liquid phase to form a recycled ionic liquid.

Abstract: A diesel desulfurization method has various steps including: implementing a modified oxidative desulfurization (UAOD) process. The UAOD has the steps of: mixing diesel fuel with room temperature ionic liquid, oxidant, phase transfer catalyst, and acid catalyst in a tank in a mix; recycling the ionic liquid and recycling the acid catalyst in aqueous phase. A step is to move the sulfur from the diesel fuel in a fluidized bed reactor (FBR) having bed reactor material. The process can be improved with ultrasound during mixing, or a high shear mixer. The bed reactor is preferably acidic alumina for adsorbing oxidized sulfur. The oxidant is preferably hydrogen peroxide (H2O2). The acid catalyst is preferably a mixture of Acetic acid and Tri-fluoro acetic acid.

Abstract: A method of a double starwheel unit in multiple rows with a multi-hole manner, an instrument and the like are disclosed. The double starwheel unit has a sleeve and two starwheel parallel-arranged and connecting the sleeve. The instrument has a plate-like assembly fixture and an orientation mechanism. The plate-like assembly fixture has a plurality of strip-like tools. The method combines the strip-like tools with the plate-like assembly fixture and a plurality of module holes, presses an exterior mold on the starwheel onto upper and lower surfaces of the plate-like assembly fixture, and injects a working fluid to shape the double starwheel units. The strip-like tools are engaged or disengaged by the orientation mechanism.

Abstract: A diesel desulfurization method has various steps including: implementing a modified oxidative desulfurization (UAOD) process. The UAOD has the steps of: mixing diesel fuel with room temperature ionic liquid, oxidant, phase transfer catalyst, and acid catalyst in a tank in a mix; recycling the ionic liquid and recycling the acid catalyst in aqueous phase. A step is to move the sulfur from the diesel fuel in a fluidized bed reactor (FBR) having bed reactor material. The process can be improved with ultrasound during mixing, or a high shear mixer. The bed reactor is preferably acidic alumina for adsorbing oxidized sulfur. The oxidant is preferably hydrogen peroxide (H2O2). The acid catalyst is preferably a mixture of Acetic acid and Tri-fluoro acetic acid.

Abstract: A method of a double starwheel unit in multiple rows with a multi-hole manner, an instrument and the like are disclosed. The double starwheel unit has a sleeve and two starwheel parallel-arranged and connecting the sleeve. The instrument has a plate-like assembly fixture and an orientation mechanism. The plate-like assembly fixture has a plurality of strip-like tools. The method combines the strip-like tools with the plate-like assembly fixture and a plurality of module holes, presses an exterior mold on the starwheel onto upper and lower surfaces of the plate-like assembly fixture, and injects a working fluid to shape the double starwheel units. The strip-like tools are engaged or disengaged by the orientation mechanism.

Abstract: A method of a double starwheel unit in multiple rows with a multi-hole manner, an instrument and the like. The double starwheel unit has a sleeve and two starwheel parallel-arranged and connecting the sleeve. The instrument has a plate-like assembly fixture and an orientation mechanism. The plate-like assembly fixture has a plurality of strip-like tools. The method combines the strip-like tools with the plate-like assembly fixture and a plurality of module holes, presses an exterior mold on the starwheel onto upper and lower surfaces of the plate-like assembly fixture, and injects a working fluid to shape the double starwheel units. The strip-like tools are engaged or disengaged by the orientation mechanism.