Variable Diameter Spring Gas Duct for Rapid Ignition

The patent removes the displaceable wall part from the system and replaces it with a spring that is already present in the combustion chamber. The spring's coils naturally form the gas duct structure, eliminating the need for additional moving wall components while maintaining reliable gas discharge functionality.

The spring serves multiple functions simultaneously: it acts as a structural support element, forms the gas duct through its coil structure, and provides the displacement mechanism to direct ignition gas toward the fuel bed. This multi-functionality eliminates the need for separate displaceable wall parts.

The patent removes the displaceable wall part and uses the spring's coil structure to form the gas duct. This eliminates the mechanical delay associated with wall displacement while maintaining sufficient gas discharge through the spring's inherent structure.

The spring is pre-positioned in the combustion chamber with its coils forming the gas duct structure before ignition occurs. When ignition happens, the spring is already in place to immediately channel the ignition gas toward the fuel bed, eliminating the time delay required for wall displacement.

The spring features varying outer diameters in different sections to optimize local gas flow characteristics. The first section has a larger diameter to accommodate initial gas expansion, while subsequent sections have progressively smaller diameters to direct and concentrate the gas flow toward the fuel bed, improving ignition efficiency through localized geometric optimization.

The spring's varying diameter design creates a dynamic gas flow path that adapts to the expanding gas volume during ignition. The gradual diameter reduction along the spring sections optimizes gas velocity and direction at different stages of the ignition process, enhancing overall ignition efficiency.