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Principle: resulting in differential pressure. By differential pressure switch monitoring in and out of the nozzle pressure difference of change, when the differential pressure to set data, control device for hydraulic control valves, motor drive signal, caused by the following action: motor driving brush rotation, the filter cleaning, emission control valve to open at the same time, the whole cleaning process for dozens of seconds, at the end of the automatic brush filter when cleaning, close the valve, the motor stop running, system back to its initial state, began to filter into the next process
14. In order to ensure the train operation safety and order, as far as possible not to stop delivery scheduling command, scheduling command wireless transmission system, the system should be used to value multiplied driver release scheduling command, is involved in running conductor, by the driver to operate the commander to convey; When the content and conditions of dispatching and dispatching orders are issued and conveyed by using the wireless dispatching communication equipment, the dispatch and dispatch order of the wireless dispatching communication equipment shall be applied. In the absence of the above conditions, there is a suspension station in this section, and the train dispatcher delivers the dispatch order at the stop station before entering the relationship interval; There is no stop in this section. The bureau may entrust the station with the station to forward the dispatching order to the operator and the operator. The entrusted office shall indicate to the entrusted authority the contents and specific vehicles of the dispatch and dispatching order, and the entrusted office shall not refuse the commission when the time permits. If the train is not in time, it must stop at the station before the train enters the relationship. The entrusted telephone shall have a good communication recording device.
Signs of birth. Since the middle of the 20th century, technology has grown faster and faster. It was only six and a half years since the discovery of uranium fission in January 1939 to the first atomic bomb exploded in July 1945. The emergence of electronic computers has led to more profound changes in the fields of human social life. These technological breakthroughs can be called technological revolutions
Off-road car tires -- cross-country cars are the front and rear wheels. Main driving cross-country car tyres in bad road, such as desert, muddy ground, loose soil or other no pavement road, urging tire has high performance and off-road tires tend to use low pressure, sometimes with pressure regulating tire, according to the road condition to adjust the size of the tire pressure. In order to improve the cross - cross section, it is generally used to increase the width of the tire section and rim and reduce the diameter of the rim so as to increase the grounding area and reduce the grounding pressure. The tyre structure is also used in the structure of the meridional structure
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