36results about How to "Avoid stalled situations" patented technology

The invention relates to a speed reduction method for a jet engine of a motorcycle, comprising the steps of speed reducing, high rotating speed detecting, first controlling, low rotating speed detecting, second controlling and idle speed controlling. The reduction amplitude of the rotating speed of the engine is judged in the first controlling step, and then the fuel oil injection strategy for anelectronic control unit is determined, so that when the motorcycle slows down, no excessive fuel oil is injected into the engine, the fuel oil waste is effectively reduced, the exhaust pollution is lowered, and the oil sediment on an exhaust pipe is avoided; in addition, in the second controlling step and the idle speed controlling step, the amount of fuel oil injected to the engine is controlled, the case that engine flameout caused by lack of fuel oil in the process of speed reducing and speed idling is prevented, thus to effectively improve the ride marketability of the motorcycle.

The invention discloses a dynamic adjusting method and device for controlling torque output threshold of full electric vehicle. The method comprises the following steps: obtaining a slope angle of the road on which the full electric vehicle is running; determining a vehicle dynamic adjusting level based on the slope angle, wherein the vehicle dynamic adjusting level is positively correlated with the slope angle; determining a first torque output threshold based on the vehicle dynamic adjusting level and the current rotating speed, wherein the first torque output threshold is positively correlated with the vehicle dynamic adjusting level and is negatively correlated with the current rotating speed; determining a second torque output threshold based on the vehicle dynamic adjusting level and the current large torque duration, wherein the second torque output threshold is positively correlated with the vehicle dynamic adjusting level and is negatively correlated with the current large torque duration; obtaining the current output threshold based on the first torque output threshold and the second output threshold, under the constraint conditions of the maximum torque output threshold and the minimum torque output threshold of the full electric vehicle. The dynamic adjusting method and device for controlling torque output threshold of full electric vehicle have the advantages of strong applicability, good safety, and the like.

The invention discloses a maintenance method for elevator traction components and a maintenance device for elevator traction components. The maintenance method includes: acquiring maintenance cycle determination information of the traction components, and the maintenance cycle determination information includes the traction components The non-linear statistical information of the use time and deformation degree of the elevator; obtain the actual use time of the elevator traction components; generate the corresponding maintenance time based on the actual use time and the maintenance cycle determination information. During the use of the elevator, the precise maintenance time for the traction components can be determined according to the time-deformation statistical information of the traction components of the elevator and the actual use time of the traction components, so that the maintenance frequency can be reasonably arranged to achieve The effective protection of the service life of the traction components improves the operating efficiency of the enterprise, and at the same time effectively avoids the occurrence of elevator downtime caused by the failure of the traction components, thus improving the user experience.

The invention relates to equipment for low-nitrogen combustion and a method for low-nitrogen combustion. The equipment for low-nitrogen combustion comprises a device for ignition, a device for flame detection, a natural gas pipeline, a flue gas pipe, a dilution pipe for natural gas, a combustion air room, and a guiding pipe for combustion air which is inserted into and connected with the combustion air room and a fire spraying pipe. The exit end of the natural gas pipeline is inserted inside the dilution pipe for natural gas from the entry end of the dilution pipe for natural gas. The flue gas pipe connects with the dilution pipe for natural gas through inner walls of the dilution pipe for natural gas, and the exit end of the dilution pipe for natural gas is inserted into the combustion air room and further inserted inside the guiding pipe for combustion air from the entry end of the guiding pipe for combustion air inside the combustion air room. The equipment for low-nitrogen combustion adopts a way of mixing natural gas with flue gas and blending the two gases inside the dilution pipe for natural gas in order to dilute the natural gas, thereby lowering calorific value of the natural gas, reducing the flame temperature, lowering the synthesis of nitric oxide fundamentally and realizing the effect of low-nitrogen combustion.

The invention provides a power allocation control method and device of mobile working vehicles. A PID controller (anti-flameout controller) is separately configured for a walking system and a working device so as to realize the anti-flameout control during single work of the walking system or the working device, and the power allocation during simultaneous work of the walking system and the working device. The simultaneous work of the walking system and the working device can be guaranteed, however, when the output power of an engine is insufficient, the required power of the walking system and the working device is reduced, but the two parts are ensured to still work instead of completely stopping one of the two parts, thereby avoiding the situation that the engine is flamed out when one part is completely stopped and the load of the other part is too large.

The invention discloses a full-automatic double-motor intelligent lock and relates to the technical field of security and anti-theft intelligent locks. The full-automatic double-motor intelligent lockcomprises a driving mechanism, an oblique tongue transmission mechanism, a main tongue pushing mechanism, an auxiliary tongue transmission mechanism, controllers, sensors, a lock body upper shell, aspeed reducing mechanism and a trigger tongue mechanism, wherein the driving mechanism, the oblique tongue transmission mechanism, the main tongue pushing mechanism, the auxiliary tongue transmissionmechanism, the controllers, the sensors, the lock body upper shell, the speed reducing mechanism and the trigger tongue mechanism are arranged on a lock body lower shell; the speed reducing mechanismis meshed with the driving mechanism and used for reducing the rotating speed of the driving mechanism and improving output torque; the speed reducing mechanism shifts the oblique tongue transmissionmechanism to make an oblique tongue do telescopic action; the speed reducing mechanism sleeves the main tongue pushing mechanism and drives a main tongue to do telescopic action; the main tongue pushing mechanism is connected with the auxiliary tongue transmission mechanism through blade arms to make an auxiliary tongue do telescopic action; and the trigger tongue mechanism triggers the oblique tongue transmission mechanism and is capable of controlling a locking oblique tongue not to pop out after retracting. According to the full-automatic double-motor intelligent lock in the invention, thelocking oblique tongue transmission mechanism can be controlled not to stretch out via the trigger tongue mechanism; even unlocking is delayed, secondary reverse rotation of the motors is not caused;and the two sets of controllers control the two sets of motors and the two sets of sensors to be mutually standby when the two sets of motors and the two sets of sensors have faults.

The invention relates to a mechanical loosening device, in particular to a self-adjusting loosening device which comprises a loosening cabin, a loosening drum, an air inlet pipe, and a rotating power element which drives the loosening drum to rotate, wherein the loosening cabin of a truncated cone shape, includes a feed hopper arranged at the top end of the loosening cabin and a discharge port installed on the right wall of the loosening cabin; the air inlet pipe is communicated with the left wall of the loosening cabin, and the loosening drum is rotatably connected in the loosening cabin; the loosening drum includes a fast cutting mechanism, a loosening mechanism, a rotating shaft and an inner blocking cylinder which is arranged in the loosening drum; a drum wall of the loosening drum and the inner blocking cylinder are both fixed on the rotating shaft which is rotatably connected on the loosening cabin and connected with the rotating power element, and the drum wall is divided into a feed part of a coniform shape and a discharge part of a truncated cone shape. In order to solve the problem of winding fibers on the loosening drum, the self-adjusting loosening device aims to provide the self-adjusting loosening device capable of avoiding fiber winding.

The invention provides a cold start control method, device and electronic control unit. The method includes: when it is detected that the engine performs a cold start, acquiring engine parameters and intake air heating relay parameters; Setting overheat protection conditions and judging whether the parameters of the intake air heating relay meet the second preset overheating protection conditions; if the engine parameters meet the first preset overheating protection conditions and the parameters of the intake air heating relay meet the second preset overheating protection conditions protection conditions, set the preset overheat protection coefficient as the preset protection value, so that the overheat protection device stops the overheat protection operation according to the preset overheat protection coefficient set as the preset protection value, effectively avoiding the heating of the intake air heating grid. As a result, the intake air temperature is too high, so that the overheat protection operation is performed and the engine is shut down.

The invention discloses a full-automatic double-motor intelligent lock and relates to the technical field of security and anti-theft intelligent locks. The full-automatic double-motor intelligent lockcomprises a driving mechanism, an oblique tongue transmission mechanism, a main tongue pushing mechanism, an auxiliary tongue transmission mechanism, controllers, sensors, a lock body upper shell, aspeed reducing mechanism and a trigger tongue mechanism, wherein the driving mechanism, the oblique tongue transmission mechanism, the main tongue pushing mechanism, the auxiliary tongue transmissionmechanism, the controllers, the sensors, the lock body upper shell, the speed reducing mechanism and the trigger tongue mechanism are arranged on a lock body lower shell; the speed reducing mechanismis meshed with the driving mechanism and used for reducing the rotating speed of the driving mechanism and improving output torque; the speed reducing mechanism shifts the oblique tongue transmissionmechanism to make an oblique tongue do telescopic action; the speed reducing mechanism sleeves the main tongue pushing mechanism and drives a main tongue to do telescopic action; the main tongue pushing mechanism is connected with the auxiliary tongue transmission mechanism through blade arms to make an auxiliary tongue do telescopic action; and the trigger tongue mechanism triggers the oblique tongue transmission mechanism and is capable of controlling a locking oblique tongue not to pop out after retracting. According to the full-automatic double-motor intelligent lock in the invention, thelocking oblique tongue transmission mechanism can be controlled not to stretch out via the trigger tongue mechanism; even unlocking is delayed, secondary reverse rotation of the motors is not caused;and the two sets of controllers control the two sets of motors and the two sets of sensors to be mutually standby when the two sets of motors and the two sets of sensors have faults.

The invention discloses an electromagnetic exhaust brake device for automobiles, which comprises an exhaust valve, the exhaust valve comprises an exhaust pipe body with an exhaust port, a rotating shaft coaxially arranged in the exhaust pipe body, and fixed to the rotating shaft, The disc that can block the exhaust port of the exhaust pipe body. The exhaust valve is connected with an electromagnetic drive mechanism that can drive the rotating shaft to open or close the exhaust port. The electromagnetic coil in the casing and the iron core arranged in the electromagnetic coil and capable of moving back and forth by the electromagnetic force are connected between the iron core and the rotating shaft with a push rod mechanism capable of rotating the rotating shaft. In the electromagnetic drive device, the auxiliary push rod and the main push rod are connected flexibly, and there is a compensation spring in the middle. If there is an error in the suction position of the iron core, the movement stroke of the disc is too small, and the iron core and the base cannot be completely attracted or the disc When the sheet cannot be completely closed, the electromagnetic force will compress the compensation spring to make up for the error.

The invention provides a gas hot water device, which includes a burner, a heat exchanger, a gas valve, a fan, and a controller. The controller is electrically connected to the burner to control the ignition and combustion of the burner, is electrically connected to the gas valve to control the opening of the gas valve by adjusting the working current of the gas valve, and is electrically connected to the fan to adjust the fan speed. The controller is configured to re-ignite after the burner fails to ignite within the limited range of the number of ignition times, and determine and adjust the speed of the fan according to the current number of ignition times. By igniting multiple times and adjusting the fan speed according to the current number of igniting times, it can resist the interference of headwind on combustion, so as to ensure that the equipment can work normally and ensure that users have a good experience.

The application provides a vehicle-based control system and a vehicle, which relate to the field of transportation. The system includes: a controller, a supercharger, an air intake heating grid and a cavity structure. One end of the cavity structure is connected to the first end of the turbocharger exhaust pipeline through the cavity intake pipeline. The cavity intake pipeline is provided with a first valve, and the second end of the turbocharger exhaust pipeline is One end is connected to the supercharger, and the other end of the cavity structure is connected to the cavity exhaust pipeline; the supercharger is used to discharge the exhaust gas after the turbine has done work into the exhaust pipeline behind the supercharger vortex; The controller is used to obtain the external ambient temperature value, and when it is determined that the ambient temperature value is lower than the critical threshold value of the ambient temperature, control the opening of the first valve so that the exhaust gas in the exhaust pipeline behind the turbocharger enters the cavity structure . It can solve the problem that the intake air volume of the engine is affected by the ice formation at the intake heating grill, resulting in insufficient engine power.

An engine stall preventive method is applicable to a vehicle comprising a belt motor generator and an engine; the belt motor generator is in dynamic connection with the engine; the belt motor generator has a power generating mode where the generator is driven by power of the engine to generate electricity and a motor mode where the generator drives the engine to run. The method includes: during running of the engine, determining that the engine is in a non-idle stall mode; if the speed of the engine is less than a low threshold, allowing the engine to enter in a staff preventive mode including switching the belt motor generator to the motor mode; increasing a torque output value of the belt motor generator till the speed of the engine being greater than a high threshold.