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

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 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.