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

The invention discloses a PHEV four-drive torque distribution method based on an ECMS. The method specifically comprises the following steps of step 1, calculating equivalent fuel consumption factorsaccording to the residual electric quantity of a power battery; step 2, calculating instantaneous total equivalent fuel consumption rate; step 3, converting all working torque combinations of an engine, a BSG motor and a rear axle motor into the working torque of a driving wheel, and determining the working torque range of each power source according to the working torque range of the driving wheel; step 4, solving the minimum value of the instantaneous total equivalent fuel consumption rate within the actual working torque range of each power source; and step 5, taking the working torque of each power source corresponding to the minimum instantaneous total equivalent fuel consumption rate as the PHEV optimal working torque for distribution. According to the method, the calculation processof the torque distribution is simplified, the torques of all power sources of a hybrid electric vehicle are reasonably distributed, so that the charge state of the power battery of the vehicle is kept balanced, the equivalent oil consumption is reduced, and the driving performance and riding comfort of the vehicle are improved.

A control device (10) for a rolling stock drive device (100) carries out the following: when shifting a transmission mechanism (6) in a state where a rotary electric machine (3) is regenerated, predicts a heat generation amount generated by an engagement element that switches grip when shifting, in a case where a target gear stage after shifting is separated from the current gear stage by numerous stages; determines from the predicted heat generation amount whether there is jump shift that jumps a gear stage that can be carried out between the current gear stage and the target gear stage; and in a case where there is a jump shift that can be carried out, controls the transmission mechanism (6) so that while the jump shift is carried out, shifting is carried out from the current gear stage to the target gear stage.

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.

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.