Dongfeng Motor Group Patente

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

The present invention relates to the technical field of vehicle safety. Disclosed are a self-diagnosis method and device for a vehicle occupant protection system. According to the present invention, the real vehicle control parameters are input into an AEB digital twin model, and a virtual second vehicle motion response parameter and a virtual second AEB system response parameter are calculated; the correlation between a real first vehicle motion response parameter and the virtual second vehicle motion response parameter of a vehicle is calculated, and the correlation between a real first AEB system response parameter and the virtual second AEB system response parameter of the vehicle is calculated; and on the basis of the correlations between the real response parameters and the virtual response parameters, it is determined whether an AEB system is abnormal or not. The self-diagnosis function of the AEB system based on digital twin technology is achieved.

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Disclosed are a transmission and a vehicle. The transmission comprises: a housing (1); a filter (2) disposed in the housing, for filtering an oil in the housing, and an oil displacement mechanism (3) disposed in the housing. The oil displacement mechanism is movably connected to the housing, and can move relative to the housing following a tilt of the vehicle, to be immersed in the oil at a bottom of the housing, thereby avoiding an empty suction of the filter.

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Disclosed are a reversing valve and a fuel cell system. The reversing valve comprises: a valve seat (100), the valve seat (100) being internally provided with a first flow channel (110) and a second flow channel (120) in communication with and perpendicular to the first flow channel, the valve seat (100) being provided with a first inlet (111) and a first outlet (112) both in communication with the first flow channel (110), and the valve seat (100) being provided with a second inlet (121) in communication with the second flow channel (120); and a valve core (200), the valve core (200) being internally provided with a third flow channel (210) coaxial with the second flow channel (120), and the valve core (200) being provided with a valve core inlet (211) and a valve core outlet (212) both in communication with the third flow channel (210). An arrangement position of the valve core inlet (211) corresponds to the arrangement position of the second inlet (121), and the valve core (200) is movably arranged in the second flow channel (120), such that the valve core outlet (212) is switched between a position corresponding to the first outlet (112) and a position staggered with the first outlet (112). The reversing valve automatically switches the position of the valve core outlet in the valve seat according to a pressure size, thus automatically achieving flow channel switching. The reversing valve does not have a relatively narrow flow channel during use, and has a small flow resistance and a small pressure loss.

A control valve, a humidifier, and a fuel cell system. The control valve (1000) comprises: a valve seat (100) being internally provided with a core cavity (110), and a first flow channel (120), a second flow channel (130) and a third flow channel (140) which are separately communicated with the core cavity (110), the valve seat (100) being provided with a first valve seat opening (121) communicated with the first flow channel (120), a second valve seat opening (131) communicated with the second flow channel (130), and a third valve seat opening (141) communicated with the third flow channel (140), and the first valve seat opening (121) and the second valve seat opening (131) being located at the same side of the valve seat (100). A valve core (200) is rotatably provided in the core cavity (110), and the valve core (200) is provided with a first valve opening (211) and a second valve opening (223) which are communicated with each other. The valve core (200) rotates relative to the valve seat (100) so as to enable the first valve opening (211) to correspondingly communicate with the first flow channel (120) or the second flow channel (130), the second valve opening (223) being used for communicating with the third flow channel (140). Two flow channels that can be controlled to be opened or closed are formed in the valve seat (100), and the first valve seat opening (121) and the second valve seat opening (131) have different communication positions with the humidifier (2000), thus lengths of paths that a cathode reaction gas flows through are different, and different transfer efficiencies of the cathode reaction gas with a humid and hot tail gas are achieved, thereby regulating the humidity of the cathode reaction gas.

A catalyst layer preparation method, the method comprising the following steps: providing a supporting layer, and soaking the supporting layer in methanol; dissolving dimethylimidazole and zinc nitrate in the methanol in which the supporting layer is soaked so as to obtain a prefabricated liquid, the surface of the supporting layer reacting to form a metal organic framework, such that a prefabricated layer is obtained; cleaning and drying the prefabricated layer, and then soaking same in a mixed solution, the solvent of the mixed solution being at least one of an alcohol solvent and water, and the solute thereof comprising transition metal ions and chloroplatinic acid; and drying the soaked prefabricated layer, and then performing heat treatment on same in a reducing atmosphere at a preset temperature to carbonize the metal organic framework, thereby obtaining a catalyst layer. The metal organic framework material is carbonized to form the catalyst layer, and the in-situ synthesis of the metal organic framework allows for homogeneity and may form catalyst layers having relatively high uniformity.

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

An electric drive system (1) comprises an electric motor (10), a transmission (20), and a bottom oil passage (40). The electric motor (10) comprises an electric motor housing (11). The electric motor housing (11)comprises an electric motor cavity (11A) and oil inlets (20). The transmission is in power connection with the electric motor (10). The transmission comprises a transmission housing (21), the transmission housing (21) comprises a transmission cavity (21C) and oil outlets. The bottom oil passage (40) is in communication with the electric motor cavity (11A)and the transmission cavity (21C). When the electric drive system (1) is in a horizontal state, heights of all the oil inlets are not lower than that of any oil outlet, and the oil inlets connected to the bottom oil passage (40) are arranged circumferentially at a bottom of the electric motor housing (11), to enable an oil in the electric motor cavity (11A)to flow back into the transmission cavity (21C) in a first preset gradient state of the electric drive system (1), ensuring an appropriate level of oil within the electric drive system.

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …