34results about How to "Improve the success rate of starting" patented technology

The invention discloses a method for controlling the shutdown position of an automobile engine. The method comprises the following steps that whether the current rotating speed omega of the engine is lower than the minimum ignition rotating speed omega Max of the engine or not is judged; if the current rotating speed of the engine is lower than the minimum ignition rotating speed, that is, omega<omega Max, whether the rotating speed of the engine is 0 or not continues to be judged; if the rotating speed of the engine is 0, the engine shutdown position control procedure is executed. Compared with the prior art, the method has the advantages that due to the fact that an ISG motor and the engine are coaxial, and the ISG motor has high position precision, when the engine is shut down, the engine is driven and controlled by the ISG motor to be shut down at the position with the minimum resisting moment, and the high success rate of starting the engine by an ISG system can be guaranteed.

The invention discloses a mobile wire induction heating controller, which comprises a CPU system control module, a data acquisition module, a data adapter module, a startup control module, a pulse forming module and a man-machine conversation module, wherein the CPU system control module consists of an INTEL80X86 processor, an INTEL80X87 floating point coprocessor, a DISKONCHIP electronic disc and a dynamic storage; the data acquisition module comprises an analogue value input unit, switching value input and output units and a counter triggering unit; the data adapter module consists of a direct current voltage acquisition unit, an analogue value acquisition adapting unit, switching value input and output adapting units and a synchronous signal conversion unit; the startup control module comprises a startup control logic unit and a pre-magnetization triggering unit; the digital pulse forming module comprises a synchronous signal shaping unit, a triggering angle calculation unit, a triggering pulse forming unit and a power amplification unit; and the man-machine conversation module comprises a liquid crystal display unit and a serial communication unit.

The invention discloses a micro-motor water resistance soft start control device for controlling a water resistance cabinet in a micro-motor water resistance soft start device. The micro-motor water resistance soft start control device comprises a wire drawing displacement sensor and a control device, the wire drawing displacement sensor is electrically connected to the control device, a three-phase electric signal input end of the control device is electrically connected to a three-phase inlet wire, and a steel wire of the wire drawing displacement sensor is mounted on a movable conductive electrode plate of the water resistance cabinet. By the aid of the micro-motor water resistance soft start control device, start of a motor is optimized, start success rate is increased, and the motor can be effectively protected from possible failure in the starting and running process.

The invention provides a method for starting a vehicle engine through combination of high pressure and low pressure. The method includes the steps that n1 is set to be the high-pressure entering rotating speed, and n2 is the engine ignition rotating speed; and when starting begins, a low pressure starting system singly works, and when the vehicle engine is dragged to rise the rotating speed to the n1, a high pressure starting system starts to work, and is combined with the low pressure starting system to perform combined action, and the engine is dragged to rise the rotating speed to the n2. By means of the technical scheme, the total energy of the high pressure starting system and the low pressure starting system can be combined, according to a given starting strategy, the output time of a storage battery and a starting motor in the low pressure system and a super-capacitor and a fly wheel generator in the high pressure system in the starting process are reasonably distributed, the cold starting process of the engine is completed, and the problems in vehicle low temperature cold starting are solved. The power of components can be saved, the system cost can be reduced, the reliability is high, the starting success rate is high, and the breakdown occurrence rate of the components is reduced.

The invention provides a method and system for improving the starting success rate of an aero-engine on a plateau, and belongs to the technical field of aero-engine control. The method comprises the steps that a plateau state signal, a wheel load signal, a high-pressure rotor speed signal and an engine starting signal are obtained; whether an aircraft is in a plateau state or not is judged according to the plateau state signal, whether the aircraft is in a ground state or not is judged according to the wheel load signal, and whether an engine is in a starting state or not is judged according to the high-pressure rotor speed signal and the engine starting signal; and when the conditions that the aircraft is in the plateau state and the ground state, and the engine is in the starting state are judged to be met at the same time, a hydraulic system corresponding to the engine on the current side is unloaded. Through the method of the invention, the starting success rate of the aero-engineunder the plateau environment can be improved.

The invention discloses a starting control method and device of a combustion gas turbine. A combustion regulating valve is controlled by adopting matching of three elements for providing fuel to the combustion gas turbine: a real-time rotating speed measurement value is matched with a rotating speed-openness curve to obtain a first combustion regulating valve openness; the real-time rotating speed measurement value is matched with a rotating speed-rotating speed climbing rate curve to obtain a corresponding rotating speed climbing rate, so that a current rotating speed PID (Proportion Integration Differentiation) given value is figured out, a second combustion regulating valve openness is obtained through the calculation of PID; the real-time rotating speed measurement value is matched with a rotating speed-temperature climbing rate curve to obtain a corresponding temperature climbing rate, so that a current temperature PID given value is figured out, and a third combustion regulating valve openness is obtained through calculation of PID; and the minimum value of the three combustion regulating valve opennesses is used as a final combustion regulating valve openness. According to the invention, the combustion regulating valve openness can be immediately corrected according to the change conditions of the rotating speed and the temperature, and thus the starting success rate can be increased.

The invention discloses a charging control and protection device of a gas turbine. The device comprises a differential protector and an excitation adjuster, wherein the differential protector is provided with a first input port, a first output port and a judging control unit, the first input port is connected with a power input terminal of a power generator of the gas turbine, the first output port is connected with a power storage unit, the judging control unit is arranged between the first input port and the first output port, the judging control unit is used for controlling the engaging and disengaging of the first input port and the first output port according to the comparison result of the output voltage of the power generator and the residual voltage of the power storage unit, and the excitation adjuster is used for connecting a power output terminal of the power generator and an excitation coil of the power generator so as to control the output voltage of the power generator to supply power for the excitation coil of the power generator. The device has the advantage that the power storage unit is charged by the self power generator of the gas turbine, the consumed power of the power storage unit can be timely supplemented, and the charging circuit is timely cut off, so the reverse charging of the power generator by the power storage unit is avoided, the power generator is protected, and the over-charging of the power storage unit is prevented.

The invention discloses an integrated low-voltage energy storage power supply system for a vehicle. The integrated low-voltage energy storage power supply system comprises a storage battery; a power supply main switch, the input end of the power supply main switch being connected with the positive electrode of the storage battery, and the negative electrode of the storage battery being the whole vehicle common ground; a charging relay, the input end of the charging relay being connected with the output end of the power supply main switch, and the output end being grounded; a current-limiting resistor, the input end of the current-limiting resistor being connected with the output end of the charging relay; a super capacitor module, formed by connecting a plurality of super capacitors in series and in parallel; a parallel relay; and a starter, the output end of the starter being connected with a whole vehicle engine starter. The parallel relay enables the output end of the power supply main switch to be connected in parallel with the positive electrode of the super capacitor module. The input end of the starter is connected with the output end of the current-limiting resistor, the output end of the parallel relay and the positive electrode end of the super capacitor module. Charging current-limiting control can be realized, and the starting success rate is improved. The invention further provides a control method of the integrated low-voltage energy storage power supply system for the vehicle.

The invention provides a vehicle oil way exhaust starting method and device and a storage medium, and the method comprises the steps: recognizing whether a current vehicle is in a first starting state or a conventional starting state according to a starting command of the current vehicle; if yes, executing a first starting mode; if yes, a second starting mode is executed; and exhaust starting is completed. Wherein the step of executing the first starting mode comprises the steps that through motor dragging, the rotating speed of an engine is increased to be higher than a first preset rotating speed, and the engine begins to fall back; and when the rotating speed of the engine falls back to the second preset rotating speed, the engine maintains the second preset rotating speed to run for set time, and power transmission between the motor and the engine is cut off. By means of the scheme, the problems that when the vehicle is started, air exists in a fuel oil pipeline, and the fuel injection quantity is not easy to control, so that the vehicle fails to start and even submerges a cylinder are solved.

The invention provides a motor drive control device, a motor and a blowing device. The motor drive control device comprises a drive control part, which controls the drive of a motor to which a three phase AC voltage is applied, and switches the electrifying modes of the phase windings of the motor; a voltage detection part, which detects the voltage of the phase windings; and a position information generation part, which generates the position information of the rotation direction of the rotor of the motor based on the detection results of the voltage detection part. The drive control part candetect the rotation direction position of the rotor as any rotation direction position from a first rotation direction position to a sixth rotation direction position which are divided according to an electrical angle of 60 degrees based on specified rotation direction position information after energization. A lower synchronous operation for switching the energization mode in accordance with therotational direction position information is started. On the other hand, when the drive control unit cannot detect the position in the arbitrary rotation direction, energization in the energization mode is added.

The invention discloses a non-inductive closed-loop starting method and device for a BLDCM in a miniature hybrid power system. According to the method, an inductance method is adopted for detecting the initial position of a rotor, a single-phase detection acceleration method is adopted for starting acceleration, then engine ignition starting is carried out, and a rotor position detection closed loop in a BLDCM non-inductive starting process in a micro hybrid power system is achieved; and a PID algorithm is adopted to control the starting current of the motor, so that the anti-interference capability and the load robustness in the starting process of the motor are improved. According to the non-inductive closed-loop starting method and device for the BLDCM in the micro hybrid power system,rotor position detection closed-loop and torque control in the process that the BLDCM is accelerated from the static state to the counter electromotive force operation state can be achieved, the anti-interference capability and the load robustness of the sensorless BLDCM starting process in the micro hybrid power system are improved, and automatic self-starting ignition of the micro hybrid power system is achieved.

The invention discloses a self-protection starting system of a marine diesel engine s, which comprises a starting mechanism, a barring mechanism, a speed reducing mechanism, a clutch mechanism, a detection module, a processing control module and an alarm module; the starting mechanism is elastically connected with the barring mechanism through the speed reducing mechanism and the clutch mechanism;the detection module is connected with the processing module and used for obtaining state information of the marine diesel engine in the barring process and the blowing process; and the processing module is connected with the alarm module and feeds back whether the marine diesel engine is started abnormally or not according to the state information obtained by the detection module. According to the self-protection starting system of the marine diesel engine provided by the invention, a method of embedding barring abnormality detection and diagnosis into the blowing starting process is adopted, no man-made interruption in the diesel engine starting process is realized by utilizing the speed reducing mechanism and the clutch mechanism, and self-protection in the diesel engine starting process is realized through the detection module and the processing control module, so that the marine diesel engine realizes active abnormality troubleshooting before starting, normal starting conditionsare met, and the purpose of safe starting is ensured.