55results about How to "Reduce the number of shifts" patented technology

The invention provides a constant speed cruise control method and system. The constant speed cruise control method includes the steps that corrected output shaft rotating speed is determined according to the value of slope where a vehicle is located; if the current output shaft rotating speed is higher than or equal to the corrected output shaft rotating speed, the vehicle is in a pre-gear-shifting state; in the pre-gear-shifting state, if the target cruise speed, the current cruise speed, the speed state and the vehicle state meet preset conditions, the gear shifting operation is carried out according to the corrected output shaft rotating speed; in the pre-gear-shifting state, if the target cruise speed, the current cruise speed, the speed state and the vehicle state do not meet preset conditions, the gear shifting operation is canceled. The constant speed cruise control method and system can improve comfort of the vehicle during driving on a ramp in a constant speed cruise state.

The invention discloses a gear-shifting control method and system with driving style identification for an automatic gearbox. The gear-shifting control method comprises the steps that 1 a driving parameter under a current automobile running condition is collected ; 2 lowpass filtering treatment is conducted on the driving parameter under the current automobile running condition; 3 a dynamic-property evaluation parameter SP is calculated under the current automobile running condition; 4 an automobile comprehensive dynamic-property evaluation parameter SPi is compared with a dynamic-property evaluation parameter SPi-1 obtained by the last time to confirm whether the automobile changes a gear-shifting point or not; 5 a new gear-shifting point is calculated to conduct gear shifting according to the dynamic-property evaluation parameter SPi under the current running condition. The gear-shifting control method and system with the driving style identification for the automatic gearbox have the advantages that the automatic gearbox gear can be adjusted automatically to conduct gear shifting based on the road condition and according to the driving style, the gear-shifting timing is more reasonable, the number of gear shifting is reduced, the fuel economy and working efficiency of the automobile are improved, and the quality of gear shifting is improved.

The invention discloses an integral modular structure of an industrial furnace and a construction method. The integral modular structure comprises a main body part and accessory equipment and accessories. The main body part of the integral modular structure of the industrial furnace comprises a radiation section modular structure, a convection segment, a radiation furnace pipe, a crossing pipe for connecting a convection furnace pipe with the radiation furnace pipe and a supporting hanging system for the radiation furnace pipe and the crossing pipe. The accessory equipment and accessories comprise a chimney, a waste heat boiler, a steam pocket, a draught fan, an ash ejector, parts of platform and ladder, an instrument and a cable of the instrument. The method comprises the steps that the main body part of an integral module of the industrial furnace and the accessory equipment and accessories of the integral module of the industrial furnace are manufactured and assembled in a workshop, integrally transported and integrally mounted to be in place. Integral modular design, workshop modular manufacturing, integral assembly, integral transportation and field integral mounting to be in place are adopted in the industrial furnace; the construction difficulty is reduced, the manufacturing precision and the construction schedule are ensured, the labor cost of site operation is low, the construction period is short, and construction is safe.

The invention relates to a cooling system for a vehicle having a transmission cooling circuit (1) which discharges the thermal energy generated in the transmission (3) via a heat exchanger (5) to a cooling water circuit (2) of an internal combustion engine (4). In the process, the transmission cooling circuit (1) comprises a bypass line (6) for bypassing the heat exchanger (5), and a control element (7). The bypass line (6) can be activated by the control element (7) with the result that the heat exchanger (5) can be bypassed in the transmission cooling circuit (1). The control element (7) can be actuated as a function of a temperature in the cooling water circuit (2).

The pneumatic and oil-burning mixed power vehicle is provided with non-return valves in valve seats on the cylinder covers of the engine, high pressure gas pipeline connecting the valves with electrically controlled high pressure gas valve and gas storage, steam generator on the exhaust pipe of the engine; electric valve for pneumatic motor in the output of the gas storage, pneumatic motor in the interlinked mechanism connected to the gear box and the transmission shaft; signal processor connected to clutch pedal switch, engine valve, oil pump, low pressure sensing switch, accumulator and electric valve for pneumatic motor. The present invention can convert various kinds of kinetic energy and waste gas energy into gas pressure energy and further convert the gas pressure energy into mechanical energy, and has excellent fuel saving effect, environment friendship and good road adaptability.

The invention discloses a method and apparatus for generating a cyclic redundancy check code. The method comprises the following steps: converting a preset generation polynomial G(X) into a binary code G(n); converting the information M(X) of a cyclic redundancy check code to be generated into a binary code M(k), where n=0, 1, .....,N; k=0,1,..... , K-1, N is the order of G(X), and K is the digitof M(k); and according to the M(k) and the G(n), calculating a remainder of M(k)*XN modulo 2 divided by G(n) by using a preset feedback shift register group and by using a successive shifting method,and using the remainder as the cyclic redundancy check code of the M(k),wherein the feedback shift register group is constructed according to Q(i-1)=G(0)*Q(i-1)*X-N+G(1)*Q(i-1)*X-(N-1)+... +G(N-1)*Q(i-1)*X-1+M(i-1)+G(N), the Q(i-1) represents a quotient of the (i-1)th shifting division, the + represents a modulo 2 addition operation symbol, the * represents a multiplication operation symbol, X-n represents a symbol that is logically shifted rightward for n times, i = 1, ....., K. By adoption of the method and apparatus disclosed by the invention, the calculation overhead can be reduced, and the CRC generation efficiency can be effectively improved.

The invention discloses an automatic gear shifting control method of a wheel type excavator during travelling. The method involves a high-speed gear and a low-speed gear, and is characterized in thatthe travelling speed and the running pump pressure value of the excavator are collected, a controller is used for carrying out comparison operation, and when the travelling speed and the running pumppressure value meet preset conditions, a transmission mode of a gear box is controlled to be the low-speed gear or the high-speed gear. According to the method, certain absorption, attenuation and buffering functions can be played, and the impact and dynamic load on an engine are greatly reduced; and due to the good self-adaptive control, the gear shifting is realized automatically, the gear shifting times in the running process are greatly reduced, the excavator is easily started and stable in gear shifting, and the operation convenience is increased.

The invention provides a gear shifting method and device of a vehicle. The method includes the steps of determining the current accelerator opening degree and current gear of the vehicle in the driving process of the vehicle, determining the trip stop duration according to the current accelerator opening degree and the current gear, determining the trip stop vehicle speed corresponding to the current accelerator opening degree according to a trip stop curve corresponding to the current gear, making the gear of the vehicle jump to a preset trip stop gear when the driving speed of the vehicle isnot smaller than the trip stop vehicle speed within the trip stop duration, determining the gear shifting vehicle speed corresponding to the current accelerator opening degree according to a gear shifting curve corresponding to the current gear when the driving speed of the vehicle is not larger than nor equal to the trip stop vehicle speed within the trip stop duration, and switching the gear ofthe vehicle into a preset shifting gear when the driving speed of the vehicle is not smaller than the gear shifting vehicle speed. By means of the method, trip stop can be performed in the driving process of the vehicle, the gear shifting frequency of the vehicle is reduced, and the power interruption situation of the vehicle caused by frequency gear shifting is effectively avoided.

A pile driving ship features that a pile orientating apparatus, a pile storage mechanism and a pile hoist are installed on it for increasing its productivity by 70% or more.

The invention discloses an automated mechanical transmission (AMT) starting gear selection control system and control method. In simple terms, two starting modes are provided for the amt of a light truck; meanwhile, a control unit can judge whether the starting mode selection is corrected or not according to the preset temperature condition; and by means of the intelligent downshift strategy, theproblems of second-gear clutch abuse, clutch overheating, second-gear starting power insufficiency and the like are avoided, and higher safety and reliability are achieved.

The invention relates to a multi-layer and multi-footage automatic dredging control method of a cutter suction dredger, and belongs to the technical field of engineering ship automatic control. The multi-layer and multi-footage automatic dredging control method comprises the steps: firstly, according to certain working conditions, control target parameters are set; and under a multi-layer and multi-footage automatic dredging work mode, a rimer, a transverse moving winch, a bridge frame winch, a steel pile trolley, a vacuum release valve, an underwater pump, a cabin interior pump and the like are jointly controlled to enable the dredger to automatically conduct dredging work according to a construction process, and thus dredging with the automatic target parameters, the automatic target yield, the automatic maximum yield and the automatic economic yield is achieved. The multi-layer and multi-footage automatic dredging control method is suitable for the conditions that the dredging soiltexture types are similar, layering is not obvious, and collapse is not prone to occurring; the dredging precision of a construction area can be improved, and the number of ship moving times is decreased; and the labor amount of dredging workers can be reduced to a great extent, the operation difference between the different operators is reduced, the construction quality is improved, equipment safety is guaranteed, and oil consumption is lowered.

The invention discloses a hydraulic mechanical type dual-clutch automatic transmission of a tractor. The transmission comprises a power main input shaft, a hydraulic torque converter, a load power output shaft and a dual-clutch automatic transmission; the power main input shaft is connected into the hydraulic torque converter, a hydraulic operation system is arranged on the hydraulic torque converter, the dual-clutch automatic transmission comprises a shell, a solid input shaft, a hollow input shaft, a first clutch, a second clutch, a main speed reducer, a first output shaft and a second output shaft, an automatic gear shifting control system is arranged on the dual-clutch automatic transmission, the main speed reducer comprises an odd number gear shifting and selecting gear set, a differential mechanism, an even number gear selecting and shifting gear set and a gear reversing, selecting and shifting gear set, the odd number gear shifting and selecting gear set and the differential mechanism are arranged on the solid input shaft, the even number gear selecting and shifting gear set and the gear reversing, selecting and shifting gear set are arranged on the hollow input shaft, and the differential mechanism comprises a differential mechanism shell, a differential mechanism gear, a main speed reducer driving conical gear, a main speed reducer driven conical gear, and an axle shaft. An automatic gear shifting control method achieved by the hydraulic mechanical type dual-clutch automatic transmission of the tractor can solve the problem of power transmission interruption and ensures the stable starting of the tractor.

The invention discloses a long-distance transport device for crown-of-thorns starfish parents. The device comprises a transport box and multiple transport frames matched with the transport box. The transport box comprises a box body and a box cover. The box cover is separated into multiple starfish drums and cooling ponds. The starfish drums are independent and distributed in a vertical direction by the box body through partition boards. The cooling ponds are located among all starfish drums. All the starfish drums and bottoms of the cooling ponds are provided with water drainage holes. An air inflating hole is arranged in each position of a starfish drum corresponding to the box cover. The transport frame is mostly composed of a framework and a sieve net and comprises a frame body and a frame cover. The invention further discloses a long-distance transport method for crown-of-thorns starfish parents. The long-distance transport device and method for crown-of-thorns starfish parents have the following beneficial effects: transport survival rate of crown-of-thorns starfish parents is greatly improved; and transport cost is saved.

The invention provides a rapid construction method for an offshore reinforced concrete frame structure. The rapid construction method for the offshore reinforced concrete frame structure comprises the following steps of step 01 beam column framework prefabrication, prefabricating a beam column framework which is formed by a vertical column and not less than one layer of horizontally cross beams through concrete at a smooth and open position; step 02 integrally hanging the beam column framework, transporting the beam column framework through a scow and hanging the beam column framework through a floating crane after concrete cast-in-situ of the beam column framework is finished and the intensity achieves the design intensity; step 03 concrete cast-in-situ of floor slabs, arranging a mixer on a mixing ship or a platform and enabling a crane cableway bucket to perform floor board pouring; S04 brickwork and decoration engineering construction which comprises performing brickwork and decoration engineering construction on the beam column framework. According to the rapid construction method for the offshore reinforced concrete frame structure, the integral fabrication hanging technology is adopted, the construction work efficiency is improved, and the construction period is shortened.

The invention relates to a seabed sand filling rotary distributing device. The seabed sand filling rotary distributing device comprises a corrugated rubber hose, a spiral descending channel slurry feeding barrel and a floating disc type rotary jet flow transmitter which are sequentially communicated from top to bottom. The corrugated rubber hose is in flexible connection with an external slurry delivery pipe at the upper portion and the spiral descending channel slurry feeding barrel at the lower portion through sleeve type connecting devices, and the spiral descending channel slurry feeding barrel is in sleeved connection with the floating disc type rotary jet flow transmitter. Compared with the prior art, the seabed sand filling rotary distributing device has the advantages that a 'spiral descending tail end reflection runner' is adopted to perform ore feeding in a seabed sand filling mode, and benthic ecological balance is not broken; seawater reaction couples produced by high-pressure jet flow ore discharge couples serve as rotating power to achieve rotary distribution, even filling of a benthic goaf is achieved; discharging port jet flows and the rotation effect of a spiral channel are combined to form a 'diffusion impeller', and the sand distribution coverage area is remarkably increased; rotating jet flows are not piled, accordingly ship moving times are decreased, and the production efficiency is improved.

The invention relates to a floating point exception processing method and device. The floating point exception handling method comprises the following steps: if floating point exception is detected toexist in operands of floating point operation, correcting the operands according to the number of leading zeros in the process of performing the floating point operation on the operands by adopting an arithmetic unit corresponding to the operation type of the floating point operation to obtain an operation result; if it is detected that the operand does not have the floating point exception, directly adopting an arithmetic unit corresponding to the operation type of the floating point operation to carry out the floating point operation on the operand to obtain an operation result; if the operation result overflows downwards, correcting the operation result. According to the floating point exception processing method and device, repeated execution of the cyclic repair process is prevented,complex interaction among multiple modules is not needed, different processing flows and modes are set according to whether floating point exception exists in operands or not, the processing flexibility is improved, and therefore the operation efficiency is improved.