7results about How to "Increase ignition energy" patented technology

The invention discloses a secondary ignition circuit and method based on HCS08SG. The secondary ignition circuit comprises a power supply processing module, a signal processing module, an IGBT (Insulated Gate Bipolar Translator) driving module, a sampling module and an HCS08SG single chip microcomputer, wherein the power supply processing module is used for supplying power to the whole circuit; the signal processing module is connected between the ECU and the HCS08SG single-chip microcomputer and used for collecting ECU signals, processing the ECU signals and outputting the ECU signals to the HCS08SG single-chip microcomputer; the IGBT driving module is connected between the HCS08SG single chip microcomputer and an IGBT and is used for driving the IGBT to carry out first ignition and second ignition according to the control signal of the HCS08SG single chip microcomputer; the sampling module is connected between the HCS08SG single chip microcomputer and the IGBT and is used for detecting the primary current flowing through the IGBT and feeding back the detected current information to the HCS08SG single chip microcomputer; the HCS08SG single chip microcomputer is used for outputting a control signal to control the IGBT driving module to drive the IGBT to perform first ignition; after the first ignition, the HCS08SG single-chip microcomputer performs sampling detection at the emitting electrode of the IGBT through the sampling module; when it is detected that the primary current of the IGBT is reduced, the HCS08SG single-chip microcomputer delays for a certain time and then outputs a control signal to control the IGBT driving module to drive the IGBT to conduct secondary ignition. According to the invention, the ignition coil can perform secondary ignition, so that the ignition coil can still provide relatively high energy at a low rotating speed, fuel oil is combusted more sufficiently, the fuel oil combustion rate and ignition energy are improved, better power is provided, the ignition stability of an engine is maintained, and the oil consumption and emission performance of the engine are improved.

The invention designs an ammonia hydrogen rotor machine based on passive pre-combustion chamber jet ignition and a control method, belongs to the field of internal combustion engines, and particularly relates to an ammonia gas storage tank connected with an ammonia nozzle through an ammonia gas pressure reducing valve, a hydrogen storage tank connected with the ammonia nozzle through a hydrogen pressure reducing valve, and an ammonia hydrogen nozzle arranged in a gas inlet channel. A jet flow spraying hole is formed in the passive pre-combustion chamber and communicates with the main combustion chamber, and the spark plug is arranged in the passive pre-combustion chamber to ignite the ammonia-hydrogen-air mixed gas. By means of cooperative control over the ammonia-hydrogen fuel proportion, regulation and control over the reaction activity of mixed gas in a cylinder are achieved, abnormal combustion is inhibited through the low reaction activity of ammonia, and therefore the power density of a rotor machine is improved; the passive pre-combustion chamber is arranged and jet ignition is combined, so that the ignition stability of low-temperature mixed gas is guaranteed, the turbulent combustion process is accelerated, and the combustion stability and heat efficiency of the rotor machine are improved.

A multi-start carrier power system, the design includes the power system architecture of the main power module, the auxiliary power module and the supercharged delivery module, the reusable carrier power scheme, the unified propellant type used by the main and auxiliary power systems, the simplified carrier power system, the improved reusable maintenance of the carrier power system, the realization of the multi-start function and the start number not limited by the starting device, with the multi-start, multi-reuse ability, while reducing the difficulty of power architecture design, the internal design optimizes the layout space, which simplifies the ignition system, improves the ignition reliability and stability, and the ignition number is not limited.

According to the self-driven plasma jet ignition combustion-supporting system and method, a liquid fuel supply unit provides fuel for the jet ignition combustion-supporting system, and the fuel enters a heating buffer tank through a main electromagnetic valve and then is divided into two paths to be buffered through electromagnetic valves and enter a plasma cavity through the electromagnetic valves; fuel passing through the buffer tank sequentially passes through the buffer tank and the electromagnetic valve to enter the plasma cavity, fuel gas entering the plasma cavity forms jet plasma between the central electrode and the plasma shell, the pre-combustion chamber is ignited to form jet flame, and the air supplementing opening supplements air and fuel mixture for the pre-combustion chamber. The power supply is respectively connected with the central electrode and grounded to provide plasma forming conditions and energy for the jet plasma, and the medium is used for isolating the central electrode and the plasma shell and guiding the discharge gas, so that the stability adjustment of the plasma is realized. The method has the advantages of being high in scene adaptability, free of carbon emission, efficient, easy to expand and the like.

The invention provides a pulverized coal burner assembly applying the coanda effect and a pulverized coal burning device with the coanda effect, and the pulverized coal burner assembly comprises a plurality of burners which are arranged around a preset axis at intervals, and the connecting line between the center point of an outlet of each burner and the preset axis is a preset connecting line; the included angle between the outlet axis of the combustor and the preset connecting line is an acute included angle, and a vertical plane passing through the outlet axis of the combustor is a preset plane; the guide part is arranged on the side wall of at least one combustor and located on the fire facing side of the combustor, and the distance D1 between the first side of the guide convex curved surface and the outlet axis of the combustor is smaller than the distance D2 between the second side of the guide convex curved surface and the outlet axis of the combustor. According to the technical scheme, the problem that in the prior art, the pulverized coal combustion stability is poor under the low-load condition can be effectively solved.

To address the limitations of existing pulse detonation combustors using detonation jet ignition, which require long jet tubes and thus restrict the increase of their operating frequency, and the dependence of stable operation of pulse detonation turbine engines on the performance and reliability of the igniter, this invention proposes a pulse detonation combustor based on rotating detonation wave ignition. This invention utilizes the relatively high frequency of rotating detonation combustion and the requirement for only a single ignition. The rotating detonation wave generated by the rotating detonation chamber serves as a continuous high-energy ignition source, igniting the explosive mixture within the detonation jet channel. This creates a high-energy detonation jet at the channel's exit, which then flows into the pulse detonation tube and ignites the explosive mixture within. This invention, while maintaining the excellent initiation performance of the detonation jet ignition method, overcomes the adverse effects of long jet tubes and high-frequency ignition on the efficient and stable operation of pulse detonation turbine engines.

The present application belongs to the technical field of engine, and particularly relates to an engine combustion system and a control method thereof. The engine combustion system comprises a cylinder and a jet ignition device. The cylinder comprises a main combustion chamber. The jet ignition device comprises a shell, the shell is provided with an ignition chamber and a spray hole, the ignition chamber is communicated with the main combustion chamber of the cylinder through the spray hole, the spray hole comprises a first spray hole and a second spray hole, the first spray hole and the second spray hole are respectively communicated with the ignition chamber and the main combustion chamber; the inner diameter of the first spray hole gradually decreases along the direction from the inlet of the first spray hole to the outlet of the first spray hole; the inner diameter of the second spray hole gradually increases along the direction from the inlet of the second spray hole to the outlet of the second spray hole; the inlet inner diameter of the first spray hole at the inlet of the first spray hole is smaller than the inlet inner diameter of the second spray hole at the inlet of the second spray hole. By using the engine combustion system in the technical solution, the jet penetration and the flame energy density can be simultaneously improved, so that the jet ignition efficiency is improved.