35results about How to "Meet Torque Demands" patented technology

A method and apparatus for continually and rapidly adjusting the output torque of an engine according to a torque demand uses an active tappet to vary the instant air charge in a combustion chamber. The invention allows substantially efficient combustion throughout the engine operating map. Various methods of changing the charge of air are disclosed.

The invention relates to a vehicle starting-up control method, particularly relates to a vehicle starting-up control method capable of reducing oil consumption, and aims at solving the problems of over-high engine rotation speed, larger impact and increase of sliding friction work and oil consumption possibly caused by improper operation by a driver during starting up of the vehicle. According to the method, the relation between engine torque and clutch friction torque during starting up of a vehicle is analyzed and studied, an electronic throttle and a clutch position sensor are additionally arranged on a manual shift automobile, and an electronic throttle control system which uses a microprogrammed control unit as the control core, and uses the clutch release bearing position, the engine rotation speed and the rotation speed of a gearbox input shaft as the input signals is developed to coordinately control the engine torque and the clutch friction torque during the starting up of a vehicle so as to realize the comprehensive control of the impact and sliding friction work during starting up of the vehicle and improve the oil economy and riding comfort during the starting up of the vehicle.

The invention discloses a method for controlling the rear axle clutch of a hybrid electric vehicle, comprising: S1: the powertrain controller collects relevant signals in real time; S2: judges whether it is necessary to enter the rear axle to shift gears according to the collected data, and if not, then Return to step S1, if yes, issue a corresponding gear shift request, and enter step S3; S3: Determine whether to perform the corresponding rear drive motor torque unloading process according to the corresponding gear shift request, if it is necessary to perform rear drive motor torque unloading, then in the rear When the actual torque of the driving motor reaches near zero torque, the shifting process is started; if it is not necessary to untwist the rear driving motor, the shifting process is directly started according to the corresponding shifting request judgment; S4: Judging according to the corresponding shifting request Rear drive motor mode request, whether the gear shift actuator is executed; S5: If the gear is successfully engaged, the rear drive motor enters the torque mode; if the gear is reversed successfully, the rear drive motor enters the standby state. The invention improves the drivability of the whole vehicle and reduces the shifting time.

The embodiment of the invention provides a starting control method and system, and relates to the technical field of engine control. The starting control method comprises the following steps that whenthe current remaining electric quantity is smaller than a low electric quantity threshold value, a starter is controlled to drag an engine to accelerate to the first rotating speed; when the currentrotating speed of the engine reaches the first rotating speed, an engine ignition signal is sent to the engine, and thus the engine enters into the automatic operation stage; based on the preset engine expected rotating speed, the engine is controlled to accelerate to the second rotating speed; and when the engine reaches the second rotating speed, coupling control of the engine power and the P2 motor power is completed by combining with a separation clutch. By applying the scheme, when the engine in the shutdown state is started, the starter enables the engine to accelerate to the first rotating speed firstly, then the engine automatically operates and approaches to the engine expected rotating speed, and thus even if the remaining electric quantity of a vehicle is insufficient, the engine and a motor can still jointly provide torque to meet the vehicle acceleration torque requirements.

The invention provides a driving management method for a four-wheel driven hybrid vehicle driving system capable of meeting the needs of a motor vehicle for torque during running in an urban area and reducing oil consumption and tail gas emission. The driving management method of the invention comprises: in a finished automobile controller, taking a position signal of a gas pedal as a demand command of a driver for a vehicle driving moment, obtaining a demand value of the vehicle to power through calculation, and comparing with the maximum torque which can be output by a motor, an ISG motor and a driving motor, selecting a suitable driving mode based on high voltage battery charged information for reference, enabling the vehicle to adopt a power-driven mode as far as possible on the premise that the battery safety electric quantity is ensured and the torque demand is met, reducing oil consumption and exhaust discharging, and avoiding single driving mode incapable of adopting four-wheel driven mode due to power shortage of battery for the traditional four-wheel driven hybrid vehicle which does not consider the battery charged information, thereby avoiding the drawback from unabling to meet the vehicle torque demand and causing oil consumption increasing and aggravation of exhaust discharging.

The present invention proposes a control method for a dual-fuel engine, comprising: obtaining the required basic quantity of gasoline according to the required torque of the vehicle; correcting the basic quantity of gasoline according to the intake air temperature of the engine, the engine water temperature and the excess air coefficient λ value to obtain Gasoline injection quantity; Diesel pre-injection quantity is obtained according to gasoline injection quantity; Diesel pre-injection quantity is corrected to obtain final diesel pre-injection quantity; Diesel main injection quantity is obtained according to gasoline injection quantity, final diesel pre-injection quantity and required torque Fuel amount; the main injection amount of diesel is corrected to obtain the final main injection amount of diesel. The control method of the dual-fuel engine according to the embodiment of the present invention has the advantage of reducing the fuel consumption and emission of the engine. The invention also proposes a control system of the dual-fuel engine.

The invention belongs to the technical field of petroleum drilling, and particularly relates to an underground signal receiving and transmitting device. According to the specific technical scheme, the underground signal receiving and transmitting device comprises a receiving part, a control device, a mechanical assembly and a transmitting mechanism; when the underground signal receiving and transmitting device works, the receiving part receives a signal transmitted by a lower-end instrument, the control device processes the received signal, and a motor is controlled to drive a rotating sleeve, so that a mechanical assembly works; and the mechanical assembly drives a mandrel, so that a rotor continuously and regularly rotates. During rotation, continuous pulses are generated due to the change of the open area of the rotor and a stator, the change of pressure waveforms is monitored on the ground, and measurement data are obtained through decoding and calculation; and according to the underground signal receiving and transmitting device, engineering parameters and geological parameters in the directional drilling process can be obtained in real time, so that a well drilling track and drilling parameters are reasonably adjusted, and measurement and control while drilling in the underground directional drilling process are achieved.

The invention provides a driving device and an injection molding machine provided with the driving device. The driving device comprises a speed reducer and a plurality of servo motors. The speed reducer is provided with a plurality of input shafts, an output shaft and a gear set. The gear set is connected between the input shafts and the output shaft and used for decelerating and synthesizing movement input of the input shafts and transmitting the movement input of the input shafts to the output shaft for single-shaft output. Output shafts of the servo motors are connected with the input shafts of the speed reducer correspondingly, so that movement input to the input shafts of the speed reducer is achieved. The driving device is used for driving a screw in a charge pipe assembly in the injection molding machine. According to the driving device and the injection molding machine provided with the driving device, the effect that input of the relatively-small-torque servo motors forms single large-torque output is achieved, and the torque requirement for screw driving of the large injection molding machine is met.

The present invention provides a cage nut assembly 100, 200, 300, 400, 500, 600, 700 having a nut member 102, 202, 302, 402, 502, 602, 702 and a cage member 104, 204, 304, 404, 504, 604, 704. The nut has a threaded aperture 116, 216, 316, 416, 516, 716, therethrough. The cage 104, 204, 304, 404, 504, 604, 704 is capable of encaging the nut 102, 202, 302, 402, 502, 602, 702 such that the nut 102, 202, 302, 402, 502, 602, 702 has a limited range of movement within the cage 104, 204, 304, 404, 504, 604, 704 in at least one dimension. The cage 104, 204, 304, 404, 504, 604, 704 has an aperture 130, 230, 330, 430, 530, 630, 730 therein sized and located to allow access to the threaded aperture 116, 216, 316, 416, 516, 616, 716 of the nut 102, 202, 302, 402, 502, 602, 702 within the range of movement of the nut 102, 202, 302, 402, 502, 602, 702. The cage 104, 204, 304, 404, 504, 604, 704 has a plurality of protrusions 140, 142, 160, 240, 242, 260a, 260b, 340, 342, 360, 440, 442, 460, 540, 542, 560, 64, 642, 699, 740, 742, 760 such as dimples or tabs, extending therefrom. The protrusions 140, 142, 160, 240, 242, 260a, 260b, 340, 342, 360, 440, 442, 460, 540, 542, 560, 640, 642, 699, 740, 742, 760 are capable of being welded to a mating surface to secure the cage 104, 204, 304, 404, 504, 604, 704 to a mating surface. The cage 104, 204, 304, 404, 504, 604, 704 includes a seam 158, 258, 358, 458, 575, 675, 775.

The invention relates to an energy management method of a BEV (Blade Electric Vehicles). The method comprises the steps: A, judging whether a driver of a vehicle uses the functions of defrosting and defogging of a vehicle control unit; B, judging whether the vehicle control unit is in a brake energy feedback mode; C, judging whether the vehicle control unit is in a normal drive mode; D, judging whether the maximum discharge power of a power storage battery is greater than or equal to the sum of the demanding power of the driver and the maximum power demand of a high voltage electric accessory; E, judging whether the maximum discharge power of the power storage battery is less than the sum of the demand power of the driver and the maximum power demand of the high voltage electric accessory. The torque demand of the driver can be optimally met by judging the power demand of the driver, the existing state of the power storage battery and other information under the precondition that the vehicle safety cannot be affected, the normal driving of the vehicle can be ensured, and the brake energy feedback can be limited to effectively protect the power storage battery; furthermore, the high-efficiency energy use can be realized, and the power storage battery can be effectively protected at the same time.