41results about How to "Improve starting ability" patented technology

The invention relates to an integrated type commercial electronic control diesel engine starting, stopping and auxiliary braking system and method. The system comprises an integrated starter electricity generator device, a back power take-off flywheel housing, an air discharge type engine brake device, an ECU and an air discharge butterfly valve; the integrated starter electricity generator device is installed on the back power take-off flywheel housing and is meshed with a flywheel through a gear, the air discharge type engine brake device is installed in a rocker arm chamber, the air discharge butterfly valve is installed in an overall vehicle air exhaust pipe, the ECU is installed on an engine and is further connected with a vehicle speed sensor, an engine rotating speed sensor, a clutch state sensor, a speed changing box gear sensor, an accelerator position sensor and a temperature sensor. According to the integrated type commercial electronic control diesel engine starting, stopping and auxiliary braking system and method, the integrated starter electricity generator device is adopted, the engine manufacturing cost is reduced, and the starting capacity is high; the engine auxiliary braking function can be further achieved, the travelling safety is improved, the overall vehicle brake shoe abrasion is reduced, and the overall vehicle using cost of a user is reduced.

The invention discloses a double-cage rotor punch, a double-cage rotor and a motor, wherein the double-cage rotor punch has a circular structure, and the double-cage rotor punch of the circular structure is provided with A plurality of rotor slots, the plurality of rotor slots are a combination of any two or three slot structures among double-cage convex slots, double-cage trapezoidal slots and double-cage knife-shaped slots. The invention reduces the starting current and slot leakage reactance of the motor, improves the skin effect and rotating speed of the motor, and enhances the starting ability and operation stability of the motor.

The invention discloses a nickel-metal hydride battery pack for a pure electric bus, and belongs to the technical field of an electrocar power supply. The nickel-metal hydride battery pack comprises single batteries, partition plates and battery connection plates, and also comprises unit connection plates, wherein the single batteries are connected in parallel to form battery units through the battery connection plates; the battery units are connected in series to form battery modules through the unit connection plates; the battery modules are connected in series to form a battery box through the unit connection plates. The nickel-metal hydride battery pack for the pure electric bus is simple in structure and easy to assemble, the heat radiating area is increased by parallel connection, a small amount of heat is generated by in -parallel shunting, the nickel-metal hydride battery pack is high in volumetric specific energy and gravimetric specific energy, quick to accelerate the bus, strong in startability, good in thermal diffusivity of the battery pack, safe and reliable, and the power requirements of the pure electric bus can be met.

The invention discloses a positive electrode plate for a large-capacity battery. The positive electrode plate includes a positive electrode grid and a positive electrode paste coated on the positive electrode grid. 0.05‑0.07wt%; aluminum 0.01‑0.02wt%; antimony 0.3‑0.5wt%; iridium 0.03‑0.05wt%; rhenium 0.07‑0.15wt%; For: magnesium lead acid 0.1‑0.3wt%; stannous sulfate 0.1‑0.3wt%; polyolefin 0.1‑0.3wt%; 4BS seed crystal 0.1‑0.3wt%; sodium perborate 0.01‑0.03wt%; Ketjen black 0.03 ‑0.05wt%; dilute sulfuric acid 9‑10wt%; pure water 10‑12wt%; fiber 0.1‑0.12wt%, the balance being lead powder with an oxidation degree of 71‑73%; the invention also discloses a large-capacity battery , including a negative plate and a separator, the separator is a double-composite type, from left to right is a thick glass fiber layer, a fine glass fiber layer, a PE layer, a fine glass fiber layer and a thick glass fiber layer, and the PE layer is wrapped with At least one positive plate adopting the above formula has the characteristics of excellent deep discharge performance, fast recovery ability after deep discharge, and strong starting ability.

The embodiment of the invention discloses a brushless direct current motor, a method for positioning the position of a rotor of the brushless direct current motor and a method for starting the brushless direct current motor. The technical scheme that a preset pulse voltage vector is exerted on a motor winding, the extreme value of the oscillating current amplitude produced in the voltage increasing step is detected and a 60-degree sector where the rotor is located is determined according to the corresponding relation between the extreme value of the oscillating current amplitude and the rotor position is adopted, and the technical effects of being high in starting reliability, high in starting capacity when the load is large and low in noise are achieved.

The invention relates to the fields of yeast biotechnology and synthetic biology, in particular to a Phaffia rhodozyma RNA polymerase III promoter and application thereof. The promoter is the Phaffia rhodozyma RNA polymerase III promoter; the promoter is SEQ ID NO:1, SEQ ID NO:2, SEQ ID NO:3, SEQ ID NO:4, or 70% of the above sequences Homologous DNA nucleotide sequence with promoter activity. The promoter disclosed in the present invention is applied to the Phaffia rhodozyma CIRSPR-Cas9 system to guide the expression of gRNA in the system, and the gene editing efficiency is increased by 4 times.

The embodiment of the invention discloses a brushless direct current motor and a method for positioning the position of a rotor of the brushless direct current motor. The method comprises the voltage increasing step, namely, when a motor is in a static state, a series of impulse voltage vectors with the preset time length are exerted on a motor winding; the detecting step, namely, a direct current bus current peak value produced through the voltage increasing step is detected; the positioning step, namely, the 60-degree sector where the rotor is located is determined according to the corresponding relation of the current peak value and the rotor position. The technical scheme that when the motor is static, a series of testing voltage pulse strings with the preset time length are exerted on the motor winding, the winding responds to the current to analyze and judge the winding inductance peak value, and the 60-degree sector where the rotor is located is judged according to the winding inductance and the rotating angle of the rotor is adopted, and therefore the technical effects that when the load is low, the reverse vibration does not exist, and when the load is large, the starting capacity is high are achieved.

The invention discloses a motor rotor and a self-starting synchronous motor, belongs to the field of the motors and the accessories, and is designed for solving the problem that the existing structure is bad in starting capacity. The motor rotor comprises an iron core, a mouse cage and a permanent magnet, the permanent magnet is a platy structure, and at least partial region on the permanent magnet is bent towards a vertical direction of a plane to which the permanent magnet belongs. The self-starting synchronous motor comprises a stator, and the motor is provided with the above rotor. The motor rotor disclosed by the invention is capable of reducing harmonic wave when the motor is started, reducing the brake torque while starting, and improving the starting capacity of the motor. The self-starting synchronous motor disclosed by the invention solves the technical difficulty that the self-starting synchronous motor cannot be widely applied, the starting capacity is excellent, and the advantage of the motor can be efficiently exerted.

The present invention discloses a switched reluctance motor with position detection coil(s). A motor stator consists of an armature stator and a detection stator, and the armature stator and the detection stator are isolated with each other. The armature stator and the detection stator consist of 4 C-shaped structures, and each C-shaped structure is provided with 2 teeth. Each tooth of each C-shaped structure of the armature stator is winded with an armature coil, and each tooth of each C-shaped structure of the detection stator is winded with a detection coil. An armature magnetic circuit anda detection magnetic circuit are short magnetic circuit structures, the armature magnetic circuit and the detection magnetic circuit are decoupled from each other, the inductance of a detection winding is not affected by the current of the armature winding, that is, not affected by the motor saturation degree, and the detection precision of the rotor position is high. The armature magnetic circuit and the detection magnetic circuit are short magnetic circuits. The motor has the advantages of low core loss and high efficiency. According to the motor, only the arranging mode of axial series connection is needed, three single-phase motor rotors are dislocated to a certain angle with each other, and thus the three-phase switched reluctance motor with strong starting capability, low core lossand self-contained position detection function can be manufactured.