4results about How to "Increase ignition energy" patented technology

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.

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.