45results about How to "Fast cold start" patented technology

The invention discloses a hydrogen combustion heater of a fuel cell engine. The hydrogen combustion heater comprises a partition plate, an enhanced heat exchange device and a catalytic reactor, the enhanced heat exchange device and the catalytic reactor are arranged on the two sides of the partition plate respectively, the enhanced heat exchange device comprises a cooling water way, a catalyst covering layer is arranged between the partition plate and the catalytic reactor, and cooling liquid pipe valves and three-way connectors are arranged on the heat exchange device and the catalytic reactor respectively. The method for realizing low-temperature self-starting of the fuel cell engine comprises the following steps that: after receiving a starting signal, the engine self-checks the ambienttemperature; when the environment temperature ranges from -8 DEG C to -3 DEG C, a signal is sent to the cold start electromagnetic valve, and the hydrogen pipeline cold start electromagnetic valve isopened; hydrogen flows into the heater to be mixed with air to generate chemical reaction to generate heat, cooling water is heated, meanwhile, the cooling liquid control valve acts to disconnect theradiator assembly and an inlet of the deionizer branch, and the cooling liquid only flows through the heating device and is heated; and the heated cooling water heats an electric pile of the engine,so that rapid low-temperature cold start of the fuel cell engine is realized.

The invention discloses a diesel engine and a flame glow plug thereof. The flame glow plug comprises a shell, an oil inlet nozzle, a flame cover, an electromagnetic induction heating element, an electromagnetic induction coil and an electrode; the electrode is arranged at the top end of the shell, and a cavity is formed in the bottom of the electrode; the oil inlet nozzle is fixedly installed on the outer side of the shell and communicates with the top of the cavity; the flame cover is fixedly connected with the bottom end of the shell and provided with a plurality of ventilation holes; the electromagnetic induction heating element is fixedly installed in the cavity, and the bottom end of the electromagnetic induction heating element protrudes out of the shell and extends into the flame cover; a gasification flow guide channel is formed between the shell and the electromagnetic induction heating element and is used for guiding, heating and gasifying diesel oil entering the cavity; theelectromagnetic induction coil is of a spiral structure, is installed in the gasification flow guide channel, is electrically connected with the electrode and is used for forming an electromagnetic field; and a mixed gas cavity is formed in the flame cover. The flame glow plug can guarantee normal cold start of the diesel engine under the extremely cold condition.

The invention provides a quick starting method of a GPS (Global Position System) receiver and a cooperative GPS receiver system. The quick starting method comprises the following steps of: at the initial time of cold start, establishing a cooperative GPS positioning wireless network by a currently started GPS receiver and the other N-1 GPS receivers in a communication range of the currently started GPS receiver; assigning one of the N GPS receivers as a network main control machine; respectively assigning information search parameters for each GPS receiver by the network main control machine, respectively carrying out corresponding information search by each GPS receiver to report the research result to the network main control machine; gathering information by the network main control machine and then sending the gathered information to the GPS receiver in the current cold start; and entering a normal working state by the GPS receiver according to the gathered information. With the adoption of the quick starting method disclosed by the invention, the information searching time of the GPS receivers in a cold start process can be greatly reduced, so as to realize quick cold start.

The invention provides a fuel cell heat balance gas-gas-gas three-phase heat exchange system. The system comprises a hydrogen conveying pipeline, a compressed air conveying pipeline, a deionized waterconveying pipeline and a fuel cell stack. The system is characterized by further comprising a heat exchange device which is arranged on the hydrogen conveying pipeline and the compressed air conveying pipeline and can realize heat exchange between the hydrogen conveying pipeline and the compressed air conveying pipeline. The temperature of hydrogen and the temperature of compressed air are detected through the hydrogen temperature sensor and the compressed air temperature sensor; a central processing unit receives and processes the signals to control a heat exchange fan of the heat exchange device, so that the temperature of the compressed air is reduced; a plurality of hydrogen capillary tubes and a plurality of air capillary tubes in the heat exchange device are in large-area contact with the heat exchange fins for heat transfer, so that the heat of the compressed air quickly compensates the temperature of the hydrogen, the temperature difference between the two is rapidly reduced,the normal service life of the battery is ensured, and the battery is not rapidly aged; and deionized water is heated by a compensation heater to realize rapid cold start of the system.

The invention discloses a proton exchange membrane fuel cell system with low-temperature storage and starting functions. The system comprises a galvanic pile of a proton exchange membrane fuel cell. An air inlet and a hydrogen inlet of the galvanic pile are communicated through an air circulating pump and a first electric heating wire by a pipeline, and an air outlet and a hydrogen outlet of the galvanic pile are communicated through a drying agent by a pipeline to form the closed circulation of the air circulating pump, the first electric heating wire, the galvanic pile and the drying agent. A water inlet and a water outlet of the galvanic pile are communicated through a first water pump and a small water tank with a second electric heating wire by a pipeline to form the closed circulation of the small water tank, the first water pump and the galvanic pile. The water inlet and water outlet of the galvanic pile are also communicated through a second water pump and a large water tank with a third electric heating wire by a pipeline to form the closed circulation of the large water tank, the second water pump and the galvanic pile. The top end of the large water tank is connected with the pipeline for controllably communicating with the atmosphere. The system can simultaneously realize the low-temperature storage and rapid low-temperature starting of the galvanic pile of the proton exchange membrane fuel cell, and equipment is simple and easy to operate.

The invention provides a low-temperature cold-start fuel cell system, comprising a fuel cell system, a low-temperature cold-start heating device, a fuel cell control system, and an electrical terminal; It is connected with the power consumption terminal; the fuel cell control system includes a control board and a control power supply. The system of the present invention can not only accelerate the cold start of the fuel cell at low temperature, but also ensure the safe use of the electric stack, avoid damage to the membrane electrode of the core element of the electric stack, and at the same time, the method is convenient for operation and control.

The invention discloses a PEM electric pile with a cold start different-stage preheating mode, and a system. The PEM electric pile is divided into three assemblies by thermal isolation structures, wherein the first assembly comprises a bipolar plate and an MEA assembly; the second assembly comprises end plates, an insulating plate and a collector plate assembly; the third assembly comprises a cooling medium and a pipeline and equipment; the thermal isolation structures comprise a thermal isolation structure arranged on the inner wall of a fuel supply system, a thermal isolation structure arranged on the inner wall of a cooling medium circulation system, and a thermal isolation structure arranged on the inner wall of an oxidizing agent supply system and a thermal insulation plate; the end plates are positioned on the two sides of the electric pile, and inlet-outlet channels of the fuel supply system, the oxidizing agent supply system and cooling medium circulation system are formed in the end plates; the insulating plate is positioned between the end plates and the thermal insulation plate; a groove is formed in one side close to the thermal insulation plate, and the thermal insulation plate is placed in the groove; the thermal insulation plate is positioned in the insulating plate groove for isolating the first assembly and the second assembly; a groove is formed in one side close to the collector plate, and the collector plate is arranged in the groove; and the collector plate is embedded in the insulating plate groove.

The invention discloses a multi-constellation receiver cold start visible satellite searching method. The multi-constellation receiver cold start visible satellite searching method comprises steps that legitimate inference is carried out according to acquired captured visible satellites, and theoretically invisible satellites are eliminated, and therefore a searching range of residual satellites is reduced; four steps adopting different searching orders are designed: a first step of searching an initial satellite group, a second step of searching an edge satellite group, a third step of extending and shrinking the searching, a fourth step of searching the residual satellites. The minimal range of the residual satellites is determined quickly and reasonably, and under conditions with or without shielding, cold start time consumption is effectively reduced.

The invention discloses a passenger car fuel cell thermal management system and method. The thermal management system includes a controller, a fuel cell, an inlet temperature sensor, an outlet temperature sensor, a PTC heater, a warm air core, a first water pump, Electric control three-way valve, deionizer, radiator, second water pump and intercooler; the heat management method includes the heat management process in the shutdown mode of the fuel cell, the heat management process in the cold start mode, and the low power operation The thermal management process in the mode and the thermal management process in the high-power working mode. The invention can make the fuel cell start quickly and avoid the failure of the fuel cell cold start.

The present invention relates to a control method, device and device for starting an engine. The method includes: when a start request is received, obtaining the current power of a battery; judging whether the current power is greater than a first preset power threshold; The current power is greater than the first preset power threshold, and the temperature of the catalyst is obtained; it is judged whether the temperature of the catalyst is less than the first preset temperature threshold; if the temperature of the catalyst is not less than the first preset temperature threshold, The engine is driven to rotate forward for fuel-cut start; if the temperature of the catalyst is lower than the first preset temperature threshold, the heating plate is preheated; the engine is driven to reverse, and the engine is heated by the heat of the heating plate; When the heating of the engine is completed, the catalytic converter is heated; when the temperature of the catalytic converter reaches the first preset temperature threshold, the engine is driven to rotate forward for fuel-cut start; the present invention can reduce fuel consumption and exhaust emission, and shorten the start-up time.

The invention discloses a diesel engine and a flame glow plug thereof. The flame glow plug includes a shell, an oil inlet, a flame cover, an electromagnetic induction heating element, an electromagnetic induction coil, and an electrode; the top of the shell is provided with an electrode, and the bottom is provided with a cavity; the oil inlet is fixedly installed on the outside of the shell, And communicate with the top of the cavity; the flame cover is fixedly connected to the bottom end of the shell, and is provided with a plurality of ventilation holes; the electromagnetic induction heating element is fixedly installed in the cavity, and the bottom end protrudes from the shell and extends into the flame cover ; A gasification guide channel is formed between the shell and the electromagnetic induction heating element, and the gasification guide channel is used to conduct flow guide and heat gasification of the diesel oil entering the cavity; the electromagnetic induction coil has a spiral structure and is installed on the The gasification guide channel is electrically connected with the electrode to form an electromagnetic field; the inside of the flame cover forms a mixed gas chamber. The flame glow plug can ensure the normal cold start of the diesel engine under extremely cold conditions.

The invention relates to a fast low-temperature start-up method for a fuel cell system, which is used to quickly start the fuel cell system when the external temperature is detected to be lower than zero degrees Celsius, comprising the following steps: S1) Open the hydrogen subsystem and feed the fuel cell stack Hydrogen; S2) Start the DCDC controller, and set the first starting current; S3) Open the air subsystem, and feed air into the fuel cell stack; S4) The fuel cell starts to generate electricity, and the output current increases to the first starting current; S5) Continue to load until the fuel cell reaches 50% of the rated output power, and complete fast low-temperature start-up. Compared with the prior art, the present invention has the advantages of simple operation and shortened low-temperature start-up time of the fuel cell system.

The invention discloses a multi-constellation receiver cold start visible satellite searching method. The multi-constellation receiver cold start visible satellite searching method comprises steps that legitimate inference is carried out according to acquired captured visible satellites, and theoretically invisible satellites are eliminated, and therefore a searching range of residual satellites is reduced; four steps adopting different searching orders are designed: a first step of searching an initial satellite group, a second step of searching an edge satellite group, a third step of extending and shrinking the searching, a fourth step of searching the residual satellites. The minimal range of the residual satellites is determined quickly and reasonably, and under conditions with or without shielding, cold start time consumption is effectively reduced.

The invention belongs to the technical field of energy saving and emission reduction of automobile engines, and discloses an engine control system and an engine control method. The engine control system includes: interconnected oil pan, oil pump, oil cooler, oil filter and oil insulation box, an oil heating device is arranged in the oil insulation box, and the oil insulation box is a hemispherical structure; interconnected The engine, water pump, radiator and cooling water insulation box are equipped with a cooling water heating device in the cooling water insulation box, and an arc-shaped accommodation groove is arranged on the cooling water insulation box. The arc-shaped accommodation groove is used to accommodate the oil insulation box. A gap is sealed between the oil insulation box and the cooling water insulation box; the medium collector is used to accommodate the heat transfer medium and can selectively fill the gap with the heat transfer medium for heat transfer between the cooling water insulation box and the oil insulation box and isolated. The engine control system increases the temperature of engine oil and cooling water and shortens the start-up time to meet the needs of energy saving.

The invention belongs to the field of methanol engine cold start, and discloses a multi-stage injection methanol engine cold start device and method. The device comprises a methanol evaporation and cracking module and a methanol multi-stage injection and ignition module, the methanol evaporation and cracking module comprises a first air inlet passage, a combustion chamber, an evaporation and cracking chamber and an exhaust pipe which are sequentially connected, and the methanol multi-stage injection and ignition module comprises a methanol box, a methanol high-pressure oil rail, a methanol pump, a first-stage methanol injector, a second-stage methanol injector, a sparking plug and a controller. The invention further discloses a multi-stage injection methanol engine cold start method. Methanol cracking gas can be prepared under the condition of low ambient temperature by multi-stage methanol injection and single ignition under the condition of cold start, and the methanol cracking gas and the uncracked methanol gas are introduced into an engine together to realize rapid cold start of the pure methanol engine. The device has the advantages of being high in stability, low in electricity consumption and easy to produce in an industrialized mode.

A navigation satellite signal receiver and a cold start method therefor. The method comprises: receiving navigation message data of a plurality of satellites, performing bit synchronisation on the navigation message data, and storing the bit-synchronised navigation message data; performing frame synchronisation on the navigation message data, and after finishing frame synchronisation, acquiring a TOW and sub-frame number of a current sub-frame; determining a sub-frame number of a previous sub-frame according to the current sub-frame number, if the sub-frame number of the previous sub-frame is 1, 2 or 3, reversely searching navigation message data of the previous sub-frame to obtain partial ephemeris data, and storing same into an ephemeris storage area; continuously receiving the navigation message data, storing ephemeris data in the navigation message data into the ephemeris storage area, after obtaining complete ephemeris data of a first sub-frame, a second sub-frame and a third sub-frame, decoding the ephemeris data, and acquiring all ephemeris parameters; and after acquiring ephemeris parameters of a pre-set number of satellites, starting to perform positioning. The method achieves quick cold start of a navigation satellite signal receiver.