4results about How to "Improve startup" patented technology

The invention discloses a starting battery detection control method and device, and a vehicle starting method and system, a charging switch of a starting battery is connected in parallel with a one-way conduction voltage reduction branch, and the conduction direction of the voltage reduction branch is opposite to the charging direction; the vehicle starting method comprises the following steps: activating a vehicle ECU unit by using a vehicle key; controlling a charging switch of the starting battery to be switched on; when the total voltage of the starting battery exceeds the starting limit threshold value, the charging switch is controlled to be switched off; judging whether the output voltage of the starting battery is smaller than or equal to the starting limit threshold, if yes, allowing ignition to start the engine, and if not, forbidding ignition to start the engine. Compared with the prior art, the charging switch is connected with the one-way conduction voltage reduction branch in parallel, the charging switch is firstly controlled to be conducted when the vehicle is to be started, and then the charging switch is turned off when the total voltage of the starting battery exceeds the starting limit threshold value, so that the output voltage of the starting battery is lowered, and the probability of triggering ECU overvoltage protection when the vehicle is started is reduced; and the stable starting effect is achieved.

The invention discloses ultralow-temperature zinc-free hydraulic oil for engineering machinery, which is prepared from the following raw material components in percentage by mass: 57 to 85 percent of II-type base oil, 5 to 30 percent of III-type base oil, 9 to 18 percent of viscosity index improver and 0.4 to 2.7 percent of other additives, and the sum of the contents of the raw materials is 100 percent. The kinematic viscosity of the zinc-free hydraulic oil at 40 DEG C is 41.4-50.6 mm < 2 > / s, the viscosity index is higher than 200, the pour point is lower than-45 DEG C, and the zinc-free hydraulic oil can provide excellent startability, high-temperature detergency, wear resistance and winter-summer universality for an engineering machinery hydraulic system in a low-temperature environment in winter.

The present invention belongs to the technical field of wind power generation, and particularly relates to a vertical axis wind turbine, comprising a wind turbine body, the wind turbine body comprising a vertical axis and blades mounted on the vertical axis, the blades of the wind turbine body being sheathed with a circular pipe on the periphery, the circular pipe being coaxial with the vertical axis; a plurality of air inlets are evenly arranged on the outside of the circular pipe, each of which is provided with a baffle for directing wind to the air inlet; a plurality of air outlets are evenly arranged on the inside of the circular pipe, each of which is provided with a partition for directing wind to the air outlet. The present invention changes a horizontally flowing natural wind field into an annular flow wind field through a circular pipe, and the wind speed can be greatly increased, thereby improving the wind energy utilization coefficient of the vertical axis wind turbine, so that the rotation speed of the vertical axis wind turbine can be greater than the wind speed.

This invention relates to a low-fluorine, high-calcium desulfurization slag system for electroslag remelting S-06 stainless steel and its application method, belonging to the field of electroslag special metallurgical technology. It addresses the problems of high fluorine content and pollution in existing electroslag smelting slag systems, resulting in poor uniformity of the prepared steel ingots and uneven, thick slag skin. The mass percentage of each component in the low-fluorine, high-calcium desulfurization slag system of this invention is as follows: CaF2: 38.3%~42.1%, Al2O3: 23.2%~24.8%, CaO: 30.9%~32.8%, MgO: 1.0%~5.0%, SiO2: 0.8%~1.0%, C: 0.07%~0.1%, with the remainder being impurities. The slag system of this invention exhibits good metallurgical effects; when using this slag system for electroslag remelting S-06 stainless steel, the resulting steel ingots have a uniform elemental distribution and a uniform slag skin.