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

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 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.