US 12,000,329 B2
Assemblies for engines
Joerg Ross, Warwick (GB); Simone Malaguti, Warwick (GB); Ian Whelan, Warwick (GB); Davide Carpentiero, Warwick (GB); Mattia Lugli, Warwick (GB); and Luke Scott, Warwick (GB)
Assigned to ASTON MARTIN LAGONDA LIMITED, Gaydon (GB)
Appl. No. 17/414,252
Filed by ASTON MARTIN LAGONDA LIMITED, Warwick (GB)
PCT Filed Dec. 17, 2019, PCT No. PCT/EP2019/085610
§ 371(c)(1), (2) Date Jun. 15, 2021,
PCT Pub. No. WO2020/127234, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 1820560 (GB), filed on Dec. 17, 2018.
Prior Publication US 2022/0049643 A1, Feb. 17, 2022
Int. Cl. F02B 19/00 (2006.01); F02B 19/10 (2006.01); F02B 19/12 (2006.01); F02B 19/16 (2006.01)
CPC F02B 19/1061 (2013.01) [F02B 19/12 (2013.01); F02B 19/16 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A pre-combustion chamber assembly for a spark ignition engine, the assembly having: an ignition chamber adapted to contain at least one electrode of a spark generator; the ignition chamber being adapted to communicate with a main engine combustion chamber via a plurality of cylindrical pre-chamber ports; wherein the ignition chamber communicates for removal therefrom of exhaust gas residuals to a distinct storage chamber via at least one transfer port, wherein the ignition chamber includes a single substantially cylindrical entrance channel leading from said pre-chamber ports in a direction towards an ignition region of the ignition chamber, the ignition region having a larger cross-section than the entrance channel, and wherein the entrance channel and ignition region are joined by a flaring chamber connector wall; and wherein the ignition chamber includes a tumble feature adapted to promote flow tumble, and the tumble feature is located in the region of the flaring chamber wall.