US 11,686,251 B1
Pre-chamber spark control with two ignition sources
William P Attard, Brighton, MI (US); Shawali Chaudhury, Rochester Hills, MI (US); and Qun Wei, Troy, MI (US)
Assigned to FCA US LLC, Auburn Hills, MI (US)
Filed by William P Attard, Brighton, MI (US); Shawali Chaudhury, Rochester Hills, MI (US); and Qun Wei, Troy, MI (US)
Filed on Apr. 26, 2022, as Appl. No. 17/729,709.
Int. Cl. F02C 7/26 (2006.01); F02C 7/264 (2006.01); F02P 17/12 (2006.01)
CPC F02C 7/264 (2013.01) [F02P 17/12 (2013.01); F05D 2270/313 (2013.01); F05D 2270/709 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A combustion control system for a turbulent jet ignition (TJI) engine having a first ignition device disposed in a pre-chamber of a cylinder head and a second ignition device disposed for communication with a main combustion chamber, the system comprising:
a set of sensors configured to measure operating parameters; and
a controller configured to:
access a trained feedforward artificial neural network (ANN) configured to model a first spark from the first ignition device, and maximum brake torque (MBT) spark based on the operating parameters;
generate the first spark, and the MBT spark for the engine using the ANN with the measured operating parameters from the set of sensors as inputs;
generate a second spark for the second ignition device;
determine a target spark timing for the engine based on at least one of the first spark, second spark and MBT spark.