A spark plug with a heated ignition chamber

Abstract

The invention discloses a sparking plug with a heating ignition chamber, and belongs to the technical field of energy conservation of an internal combustion engine. The sparking plug comprises a positive electrode binding post, an insulator, a sparking plug body, an ignition chamber shell, a central electrode, an electric heating wire, a heating controller and a one-way conduction element; the central electrode, coated with the insulator, is arranged in the central position of the sparking plug body; an ignition gap is formed between the lower end of the central electrode and a grounding negative electrode; the electric heating wire is embedded in the wall of the ignition chamber shell; and one end of the electric heating wire is connected with the sparking plug body while the other end is electrically connected with the heating controller. By virtue of the sparking plug, the mixed gas in the high-temperature ignition chamber can be detonated and then the residual mixed gas in the cylinder can be ignited, so that spark ignition can be realized in a condition exceeding a normal combustion ultimate, the combustion rate in the ignition chamber can be accelerated, and flame jet energy can be improved; and by virtue of the spark plug, the mixed gas lean-burn combustion limit of an ignition type engine can be improved, and the spark plug also can be used for a spark auxiliary homogeneous compression-ignition engine and can improve the fuel economy of the engine and lower NO<x> emission.

Description

technical field [0001] The invention relates to a spark plug with a heating ignition chamber, which belongs to the technical field of energy saving of internal combustion engines. Background technique [0002] Low temperature combustion engine operating modes including homogeneous compression ignition, partial premixed compression ignition and activity controlled compression ignition have the potential to achieve low NOx emissions and high fuel economy. Since the ignition timing of the above low-temperature combustion is determined by the kinetics of chemical reactions, it is difficult to effectively and directly control it in actual engine applications. Spark-assisted homogeneous compression ignition technology adopts spark plug ignition to realize the mixed combustion mode of flame propagation in the early stage and compression ignition in the later stage. However, limited by the reliable ignition conditions of the spark plug, the lean limit of the combustible mixture can...

AI Technical Summary

Problems solved by technology

However, limited by the reliable ignition conditions of the spark plug, the lean limit of the combustible mixture cannot be effectively reduced, and the improvement of fuel economy is limited

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