51results about How to "Adjustable operation" patented technology

The present invention relates to a volumetric efficiency based lift pump control method. As one example, a method of operating a fuel delivery system of a directly injected internal combustion engine including a plurality of in-cylinder direct fuel injectors, a higher pressure fuel pump and a lower pressure fuel pump is provided. The method comprises operating the lower pressure fuel pump and the higher pressure fuel pump to maintain a prescribed fuel pressure at the fuel injectors; and varying an amount of pump work that is provided by the lower pressure fuel pump relative to the higher pressure fuel pump responsive to an indication of the efficiency of the higher pressure pump.

The invention discloses a hydraulic servo variable-load loading test bench, belongs to the field of mechanical hydraulic pressure, and relates to a fatigue test bench using an electro hydraulic servo system and being capable of realizing pressure and displacement feedback double closed loop control. The test bench consists of a control system and four loading mechanisms in parallel connection, wherein two of the four loading mechanisms in parallel connection are used for loading in the axial direction, and the other two of the four loading mechanisms in parallel connection are used for loading in the radial direction. In the control system, an industrial personal computer and a controller are connected through a data wire; and a displacement sensor and large and small force sensors are connected to the controller through data transmission wires. The loading test bench is fixed on the ground; the large force sensor for loading in the axial direction is mounted at the front end of one servo hydraulic cylinder; and the small force sensor for loading in the radial direction is mounted at the front end of the other servo hydraulic cylinder. Four control channels of the hydraulic servo variable-load loading test bench can work together; and the test bench has the advantages of simple structure, clear principle, low cost, stable long-term operation and high efficiency, and can synchronously carry out the fatigue loading for a plurality of samples.

The invention belongs to the field of supercapacitors and discloses a flexible and solid supercapacitor, a preparation method and application thereof. The supercapacitor comprises a positive electrode, a negative electrode and an electrolyte interposed therebetween, wherein the electrolyte is double-network lignin hydrogel, and both the positive and negative electrodes are conductive electrodes. The double-network lignin hydrogel as the electrolyte in the present invention not only has high mechanical strength property, but also has a simple preparation method, low raw material cost, renewability, green environmental protection, and high ionic conductivity; when the hydrogel is used as the electrolyte to assemble the supercapacitor, additional soaking of an ionic solution is not required and additional use of a diaphragm is not needed, thereby effectively reducing the thickness and weight of the supercapacitor. The obtained capacitor specific capacitance value is higher than the current hydrogel electrolyte type flexible supercapacitor specific capacitance value. In addition, the supercapacitor has very good charging and discharging cycle stability, compression resistance and bending resistance.

The invention relates to an automatic device for prevention and treatment of dust in a quarry drilling perforation operation. The automatic device comprises a bottom plate, four universal wheels are symmetrically installed on the lower end surface of the bottom plate, an armrest is arranged on the back side of the upper end face of the bottom plate, two crossbars are arranged on the armrest, and astaff moves the automatic device through the armrest with the assistance of four universal wheels to the perforation position of the drilling perforation of a down-the-hole drill; the left side of the upper end surface of the bottom plate is provided with a spraying device, and the spraying device can realize the spraying and dust-removing function during the drilling perforation of the down-the-hole drill; and the right side of the upper end surface of the bottom plate is provided with a dust suction device which can realize the automatic dust-suction function during the drilling perforationof the down-the-hole drill. The automatic device can simultaneously realize the function of spraying and dust removing and the function of automatic dust suction during the drilling perforation of the down-the-hole drill, and has the advantages of no manual adjustment of spray operation, automatic adjustment of spray angle, simple and convenient operation, high degree of automation, good sprayingeffect, vacuuming by means of activities, adjustable dust-suction direction, high dust-suction speed, and good vacuum effect.

The invention carton stapler for corrugated cases and belongs to the field of corrugated case manufacturing equipment. The carton stapler adopts a paper conveying mechanism which uses a hexagonal steel type transmission shaft to drive two small belts (1). A driving roller (2) and a driven roller (3) one each side of each small belt (1) are connected together through a small wall plate (17) on thesame side, and each small belt (1) is also provided with a complete manual adjustment mechanism which adjusts axial displacement by using a threaded rod threaded rod shaft as well as an array roll type transverse positioning mechanism and a paper pressing belt (36) type paper pressing mechanism with a small roll (38), wherein the manual adjustment mechanism, the array roll type transverse positioning mechanism and the paper pressing belt (36) type paper pressing mechanism are all connected with the small wall plate (17) the transverse position of which can be adjusted. The carton stapler alsoadopts an automatic head nailing device which has a light controlled automatic system and is matched with the continuous paper conveying device. The transverse position of the automatic head nailing device is adjustable, the vertical position of a nail head holder (57) and the size of the paper pressure are adjustable, and a nail tongue (64) of a belt base plate (55) is changeable. The rollers can be changed easily and the transverse positions of the rollers can be adjusted conveniently, the friction is small, and the paper pressure is adjustable in terms of size. The carton stapler can not damage the surface of corrugaled board and the patterns on the surface of the corrugaled board, achieves excellent nailing quality, high efficiency and low energy consumption, and is convenient in adjustment and maintenance and is suitable to nail corrugaled boards with different thicknesses.