Aston Martin Lagonda Global has been granted a patent for a pre-combustion chamber assembly designed for spark ignition engines. This assembly features an ignition chamber that effectively removes exhaust gas residuals, enhancing ignition reliability at low speeds while maintaining performance at high speeds and loads. GlobalData’s report on Aston Martin Lagonda Global gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Aston Martin Lagonda Global, Radiator grilles was a key innovation area identified from patents. Aston Martin Lagonda Global's grant share as of June 2024 was 72%. Grant share is based on the ratio of number of grants to total number of patents.
Pre-combustion chamber assembly for spark ignition engines
The patent US12000329B2 describes a pre-combustion chamber assembly designed for spark ignition engines. This assembly features an ignition chamber that houses at least one electrode of a spark generator and connects to the main combustion chamber through multiple cylindrical pre-chamber ports. A key aspect of the design is the inclusion of a distinct storage chamber that facilitates the removal of exhaust gas residuals from the ignition chamber via transfer ports. The ignition chamber is characterized by a single cylindrical entrance channel that leads to a larger ignition region, connected by a flaring chamber wall. Additionally, the ignition chamber incorporates a tumble feature to enhance flow dynamics, promoting efficient combustion.
The claims further detail the structural specifications of the assembly, including the dimensions and materials used. The ignition region is designed to be circularly cylindrical, with a diameter significantly larger than that of the entrance channel. The assembly can accommodate a spark plug, with the ground electrode positioned centrally within the ignition region. The pre-chamber ports are arranged in an equispaced pattern, diverging at an angle from the ignition chamber. The storage chamber is toroidal and fully sealed, ensuring it communicates solely with the ignition chamber. The assembly is passive, lacking direct fuel injection into the ignition chamber, and is intended for use in engines that may include gasoline direct injection (GDI) or port fuel injection (PFI) systems. Overall, this innovative design aims to improve combustion efficiency and reduce emissions in spark ignition engines.
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