6 results about "Automobile market" patented technology

The invention relates to an automobile main carpet with a local sound insulation enhancing structure and a preparation method of the automobile main carpet. The automobile main carpet sequentially comprises a carpet surface layer and a carpet surface layer from top to bottom, the first sound insulation layer is a PET formed felt layer laid below the carpet surface layer; the second sound insulation layer is a polymer heavy layer laid below the first sound insulation layer; the sound absorption layer is compounded below the first sound insulation layer and the second sound insulation layer; wherein the second sound insulation layer is locally arranged in a noise sensitive area of the automobile main carpet, so that a four-layer reinforced structure consisting of the carpet surface layer, the first sound insulation layer, the second sound insulation layer and the sound absorption layer is formed in the part; the area without the second sound insulation layer is of a three-layer foundation structure composed of the carpet surface layer, the first sound insulation layer and the sound absorption layer. Compared with the prior art, the cost and the weight can be effectively balanced while the good sound insulation performance is guaranteed, in addition, the enhanced area can be configured according to the noise distribution of the whole automobile, and the harsh requirements of the current automobile market are met.

The application provides a kind of flat wire motor full slot technology of hairpin multi-wire motor stator, which adopts the topology process of end edge greater than effective edge section, realizes "full slot" (refers to equivalent resistance), and the coil resistance is 30% lower than that of X-pin and Hair-pin process motor.In the two-layer flat wire structure, the same specification of 8 turns of special-shaped wire is filled in the slot hole in self-adaptive sliding fit with trapezoidal slot, and the bundle with central cooling hole is formed. One hairpin element occupies a position to realize 16 layers of wire layout to reduce skin effect and improve motor power density and efficiency. The two ends of the hairpin center hole are connected by sealed pipeline, and cooling medium is injected for heat dissipation. The ineffective edges of the hairpin element with multiple enlarged sections are connected to phase lines by the effective edges and the end edges with multiple enlarged sections respectively to realize equivalent resistance as full slot to meet the market demand of electric motorcycle, E-bike, electric motorcycle, new energy and electric vehicle.

The invention discloses a second-hand new energy automobile price prediction method based on an LSTM-GCN model. The method comprises the steps of 1, obtaining historical price time sequence data and related influence factor data of a second-hand new energy automobile market; 2, cleaning and standardizing the data; 3, analyzing a market structure based on data; 4, on the basis of the market structure, constructing a plurality of models for representing the spatial dependency relationships, and for each spatial dependency relationship, generating a plurality of corresponding adjacency matrixes by using a graph calculation method; 5, inputting historical price time sequence data, influence factor data and various adjacent matrixes into the trained price prediction model, and outputting corresponding second-hand new energy vehicle price prediction data; and 6, using second-hand new energy vehicle price prediction data output by the price prediction model as a market price prediction result. According to the method, the prediction precision is remarkably improved, and a more reliable price prediction reference can be provided for participants in the second-hand new energy automobile market.

The utility model relates to the technical field of automobile parts, especially relates to a rear license plate illumination integrated device after tail door opening, including main body, outer lens, shell, integrated circuit board and tail door operating part, the main body is fixed on the vehicle body, outer lens and main body fixed connection, the shell is embedded in the upper surface of outer lens, the integrated circuit board is installed with luminous element and inductive switch, tail door operating part is embedded in the upper surface of shell, the inductive switch is triggered through the touch tail door operating part, this integrated type tail door opening mechanism integrates multiple functions on one product, can satisfy tail door opening function, can also realize rear license plate lamp illumination function, and license plate illumination mechanism can also satisfy global regulation requirement, can also save part cost, reduce part assembly space and assembly time, satisfy the increasingly fast development automobile market demand.

The application discloses a cylinder gasket vibration fatigue test device, structure and method, and belongs to the technical field of automobile engines. The test device comprises, from top to bottom, a vibration pressure disc, a cylinder cover simulation block and a cylinder body simulation block, a cylinder gasket vibration fatigue test structure is arranged between the cylinder cover simulation block and the cylinder body simulation block, cooling liquid flow channels are arranged in the cylinder cover simulation block and the cylinder body simulation block, and a temperature rising through hole is arranged in a middle region of the cylinder body simulation block; a cylinder hole is arranged in a middle region of the test structure, a plurality of cylinder gasket through holes are arranged around the cylinder hole, and a plurality of screw holes corresponding to the cylinder gasket through holes are arranged on the cylinder body simulation block; and the test method is realized based on the cylinder gasket vibration fatigue test device. The application is not affected by the space size of the cylinder gasket, can identify the vibration fatigue risk of the cylinder gasket in advance, can reduce development cost, the test method is simple and easy to operate, is convenient for test workers to test, can be widely applied to the domestic automobile market, and can improve the reliability of engine parts.

The present application provides a new type of pneumatic massage headrest mechanism, including headrest shell, headrest framework, headrest rod, double-layer air cushion and air pipe, the headrest shell is installed on the headrest framework, the headrest framework is installed on the headrest rod, the headrest rod is hollow, one end of the air pipe passes through the headrest rod and connects with the double-layer air cushion, the double-layer air cushion is installed on the headrest shell, and the height of the double-layer air cushion is adjusted through the air pipe. After the massage function is activated, the displacement and vibration along the X direction of the headrest shell are generated through the double-layer air cushion, so that the pneumatic massage demand for the head of the passenger is realized, the headrest can meet the safety requirements and the use demand of the passenger, and meets the future automobile market.