83results about How to "Reduce spontaneous combustion" patented technology

Methods and systems are provided for a vehicle engine. One example method comprises delivering a first fuel to an engine cylinder at least partially during an intake stroke, and initiating combustion in the cylinder via injection of a second fuel into the cylinder. Responsive to an indication of uncontrolled combustion of pre-mixed first fuel and air in the cylinder, wherein the uncontrolled combustion is onset by the initiated combustion of the second fuel, amounts of the first fuel relative to the second fuel in the cylinder are adjusted.

An engine having two or more fuel injectors is disclosed, where at least one of the injectors is used to port fuel inject fuel into the cylinder when the air intake valve is open. The open valve port fuel injector is used to inject a fuel that has alcohol as a constituent and is the same fuel injected by another fuel injector. In other embodiments, the open valve fuel injector is used to inject an anti-knock fuel containing alcohol while a primary fuel, is introduced by another injector. The operation of the open valve fuel injector can be optimized to maximize the vaporization cooling. In other embodiments, the open valve fuel injector may be used in conjunction with direct injection of the primary fuel or the anti-knock fuel. Heavy EGR can be optimally used with the various embodiments.

Various methods and systems are provided for maintaining combustion stability in a multi-fuel engine. In one example, a system comprises a first fuel system to deliver liquid fuel to at least one cylinder of an engine, a second fuel system to deliver gaseous fuel to the at least one cylinder, and a controller. The controller is configured to supply the gaseous fuel to the at least one cylinder, inject the liquid fuel to the at least one cylinder thereby to ignite the liquid fuel and the gaseous fuel in the at least one cylinder via compression-ignition, and adjust an amount of the gaseous fuel relative to an amount of the liquid fuel based on a measured parameter associated with auto-ignition of end gases subsequent to the compression-ignition of the liquid fuel.

The invention relates to a secondary steam compressed drying method of sludge. Present drying methods have the disadvantages of high energy consumption and low efficiency. The method of the invention comprises the following steps: uniformly mixing dewatered sludge generated in the process of sewage treatment with oil according to a weight ratio of 1-20:1 to form oil sludge, drying the oil sludge with secondary steam, carrying out oil and dry sludge separation on the dried oil sludge; reusing separated oil as a raw material of mixed oil sludge, and treating separated dry sludge as a dry finished product of sludge; and separating saturated secondary steam from the secondary steam generated in the process, compressing to superheated steam superheated steam, and sending the superheated steam which is treated as a heat source to a heating chamber of a drier. The method of the invention fully utilizes the heat energy of the secondary steam, so the energy consumption of a drying system is greatly reduced; and no dust is entrained in the drying process, so the cleaning of heat exchange surfaces of a drying device is kept, and the drying efficiency is high.

The invention provides a premixed combustion system of a diesel engine and belongs to the field of combustion of an internal-combustion engine. The combustion system sprays diesel oil or heavy oil or a mixture of the diesel oil and fuel with the automatic ignition temperature which is higher than that of the diesel oil and a cetane number which is lower than that of the diesel oil into a combustion chamber by a main oil spraying nozzle or sprays from an air inlet cannel to form premixed gas; a low compression ratio is adopted to enable the premixing gas formed in a cylinder not to be automatically ignited by depending on a compression temperature; with regard to the fuel which corresponds to the fuel sprayed by the main oil spraying nozzle and is directly sprayed into the combustion chamber from a part adjacent to a compression upper stopping point through a secondary oil spraying nozzle, the fuel with the low automatic ignition temperature and the high cetane number is the fuel which is easier to ignite by compression; and the fuel is ignited and combusted in the cylinder so as to effectively control an ignition phase of the premixed gas and realize the homogenous premixed compression ignition in a full work condition range. Waste gas is recycled or water is sprayed into an air cylinder or the air inlet channel to control the combustion speed; and the high heat efficiency is guaranteed by a high expansion ratio.

The invention relates to a terminal short circuit protection method and a device. At least one first electronic component which is in a system of a terminal and is relevant to charging and discharging is equipped with a corresponding rapid temperature response device, and at least one electronic control component of the system of the terminal corresponding to the first electronic component is connected with a signal generation device corresponding to the rapid temperature response device. The method comprises steps that an interruption signal sent by the signal generation device is received by the electronic control component, the interruption signal is generated by the signal generation device when detection temperature of at least one rapid temperature response device reaches a corresponding set threshold, and circuits related to a power source are cut off. Through the method and the device, the circuits related to the power source can be cut off through the electronic control component after the temperature of the electronic component rises to the set threshold because of short circuit, the terminal can be prevented from being damaged by continuous energy, and safety of the terminal is improved.

The invention discloses an automobile security system based on a real-time-control on-board communication network technology, which belongs to the technical field of wireless communication. The automobile security system structurally comprises an automobile ignition system (5), and is characterized by further structurally comprising a main control module (1), an RFID (radio frequency identification devices) module (2) and a GSM (global system for mobile) module (3), wherein the main control module (1) is used for comparing the information received by the RFID module (2) with pre-stored information, if the information received by the RFID module (2) is the same as the pre-stored information, an automobile can be normally started, or else, then an ignition module is locked so that the automobile cannot be started, and alarm information is sent to the automobile simultaneously. According to the automobile security system disclosed by the invention, the security of the automobile in an idle state can be effectively protected, and automobile steal events can be reduced.

The invention provides a highway tunnel vehicle spontaneous combustion early warning system and method based on thermal imaging. The system comprises a monitoring center, a control unit, a monitoring unit and a display unit, wherein the monitoring unit is used for monitoring information of vehicles entering a highway tunnel; and the display unit is used for prompting information for drivers. The temperatures of the vehicles which are about to enter the tunnel are detected, when the temperature data exceed the threshold value, warning information is transmitted to the monitoring center automatically, and meanwhile, license plate numbers and warning information of the vehicles are transmitted to the display unit for prompting the drivers. By the highway tunnel vehicle spontaneous combustion early warning system and method based on thermal imaging, the vehicles which can spontaneously combust potentially can be warned before entering the tunnel, and then can be treated ahead of time, hidden dangers causing spontaneous combustion of the vehicles are eliminated, the circumstances that the vehicles spontaneously combust after entering the tunnel are reduced, and life and property safety of people is guaranteed.

The invention relates to the field of flame retardants, in particular to a modified aluminum hypophosphate flame retardant. A preparation method of the modified aluminum hypophosphate flame retardantcomprises the following steps: 1) adding aluminum hypophosphate and a dispersing agent in a reaction kettle and fully stirring, so that a solution is uniformly dispersed; 2) adding an adhesive and a modifying agent, raising the temperature, stirring and fully reacting to obtain a crude product; and 3) washing, filtering and drying the crude product to obtain the modified aluminum hypophosphate flame retardant. The modified aluminum hypophosphate flame retardant prepared by the preparation method provided by the invention can effectively solve the problems of low aluminum hypophosphate heat resistance, low compatibility, low dispersing performance and the like.

The invention discloses a wireless communication real-time monitoring vehicle-mounted security system based on CAN control, belonging to the technical field of the wireless communication. The system structurally comprises an automotive ignition system (5) and is characterized in that the system further structurally comprises a main control module (1) connected with the automotive ignition system (5) as well as a RFID (Radio Frequency Identification Device) module (2), a GPRS (General Packet Radio Service) module (3), a GPS (Global Position System) module (4) and an image gathering module (6) which are connected with the main control module (1). When the automobile is abnormal or stolen, the engine ignition system can be locked; important information, such as GPS locating information, image information in the automobile and the like can be sent to the mobile phone reserved by the car owner by the GPRS module; and the safety of automobile in idle can be protected effectively.

Methods and systems are provided for maintaining combustion stability in a multi-fuel engine. In one example, a system may include first and second fuel systems to deliver liquid and gaseous fuels, respectively, to at least one cylinder of the engine, and a controller. The controller may be configured to supply the gaseous fuel to the at least one cylinder, inject the liquid fuel to the at least one cylinder to compression ignite the liquid fuel and combust the gaseous fuel in the at least one cylinder, and retard an injection timing of the injection of the liquid fuel based on a measured parameter associated with auto-ignition of end gases subsequent to the compression-ignition of the liquid fuel. In some examples, the controller may further be configured to adjust an amount of the gaseous fuel relative to an amount of the liquid fuel based on the measured parameter.

The invention discloses cellulose powder for cold-light spraying fireworks. The cellulose powder is prepared from the following components in parts by weight: 85 to 90 parts of nitrocellulose, 2 to 3parts of diphenylamine, 3 to 8 parts of calcium nitrate and 3 to 4 parts of graphite, wherein the nitrogen content of the nitrocellulose is less than or equal to 12.5 percent and the water content is23 to 27 percent. Smokeless propellant powder disclosed by the invention has better explosive stability, moisture resistance and environment friendliness and is suitable for various cold-light fireworks to use.

The invention discloses a pulverized coal preparation system and a pulverized coal preparation method. The pulverized coal preparation system comprises a heat source device, a drying device, a pulverizing device, a powder colleting implement, an air blower, a bag-type dust collector and an induced draft fan. The smoke outlet end of the drying device is connected with the smoke inlet end of the bag-type dust collector. The smoke outlet end of the bag-type dust collector is connected with the induced draft fan. Dry raw materials of the drying device are fed into the pulverizing device. a closed grinding circulatory system is formed among the pulverizing device, the powder colleting implement and the air blower. The pulverized coal preparation system further comprises a balance air pipe. The outlet end of the air blower is then connected with the smoke inlet end of the bag-type dust collector through the balance air pipe. According to the pulverized coal preparation system and the pulverized coal preparation method, full negative pressure running of a system air leak position is achieved, and accordingly the purpose of clean production is achieved. The temperature of powder collected by the bag-type dust collector is lowered, and the possibility of powder spontaneous combustion and explosion is reduced, so that the safety performance of the pulverized coal preparation system is significantly improved. Compared with the traditional process, the number of equipment and sites are reduced, and the cost is reduced.

A method for treating coal to reduce spontaneous combustion by reducing an exothermic heat of adsorption after the coal has begun to dry and when the coal is subsequently exposed to a liquid water is described. A source of a fluid pressure of a diluted hydrocarbon mixture is provided. A hydrocarbon in the mixture is a hydrocarbon emulsion of mineral when the coal is subsequently exposed to a liquid water oil, fuel oil, asphalt, or coal tar emulsions. A volume of the diluted hydrocarbon mixture is applied to a stream of freshly-mined and undried coal to provide a water-proofing of the coal to prevent water uptake after exposure to precipitation or flooding during transport and storage of the coal. The treated coal is loaded into a bulk pile. A temperature change trend in the bulk pile is reversed wherein a temperature of the bulk pile trends towards an ambient temperature rather than trending to a temperature higher than the ambient temperature.

The invention provides a power lithium battery protective housing, and relates to the technical field of power lithium battery equipment. The protective housing comprises an aluminum box and a cover,a main electrode male plug and a main electrode female plug are arranged equally in the middle position of the cover, an auxiliary electrode male plug and an auxiliary electrode female plug are arranged equally in the middle position of the aluminum box, a space between the internal and external surfaces of the aluminum box serves as a plastic-aluminum film cavity, the aluminum box is uniformly provided with multiple radiating holes, and position where the plastic-aluminum film cavity makes contact with the back side of the aluminum box is provided with an inflation port, and the inflation port extends to the outer side of the aluminum box and fixed by a press ring. The main electrode male plug, main electrode female plug, auxiliary electrode male plug and auxiliary electrode female plug are arranged to meet requirements for different installation positions when lithium batteries are connected in series and expanded to form a lithium battery group, a plastic-aluminum housing is selected, the radiating holes are increased, the heat radiation capability of the lithium batteries can be improved, the plastic-aluminum material is low in weight and high in intensity and plasticity, and the protective housing of the plastic-aluminum material can improve the energy density of the power lithium battery.

The invention discloses a battery pack for a new energy automobile. The battery pack comprises a heating rod, a cooling box, a water pump, a water outlet pipe, an exhaust pipe, a sucking pump, a box cover, a PCB, a box body, an explosion-proof layer, a rubber base, a supporting block, a partition plate, a battery body, a cavity, a shell, a temperature sensor, an inserting plate, a water adding port, a water inlet pipe, a first semiconductor chilling plate, a top cover, an air inlet pipe, a condensing box, second semiconductor chilling plate, a tinfoil layer, and a shell door. The shell of thebattery pack is provided with the cavity, the top surface of the shell is provided with the cooling box and the water pump, the water pump can be started in summer, and water in the cooling box circularly flows in the cavity under the action of the water pump, so the spontaneous combustion of the battery due to higher temperature in summer is greatly reduced, and the service life of the battery isgreatly prolonged; when the battery burns accidentally to generate explosion, the explosion-proof layer can effectively reduce the explosion range of the battery, and effectively reduce the harm generated during the explosion of the battery.

The invention discloses a method and device for conveying combustible gas generated in leachate treatment, and belongs to the technical field of combustible gas conveying. By means of the method and device for conveying combustible gas generated in leachate treatment, by introducing emptying gas into a cooling conveying pipe in the conveying process, the concentration of the combustible gas can beeffectively reduced, and the spontaneous combustion and explosion probability in the conveying process of the combustible gas is reduced; meanwhile, after the combustible gas is introduced into the cooling conveying pipe, cooling liquid can effectively absorb the heat in the combustible gas from the outside, and meanwhile an inner cooling headtree makes direct contact with the combustible gas andcan cool the combustible gas from the inside, so the heat carried by the combustible gas can be remarkably reduced under the inside and outside duplex action, and then the spontaneous combustion or explosion caused by the high heat in the conveying process of the combustible gas is effectively reduced, and the conveying safety of the combustible gas generated in waste incineration is effectivelyimproved.