SYSTEM AND METHOD FOR ENGINE CONTROL USING PRE-CHAMBER IGNITION

摘要

A system and method are disclosed for controlling an engine using pre-chamber ignition. According to at least one aspect of the present disclosure, the system includes a pre-chamber ignition system in communication with a combustion cylinder of the engine. The ignition system includes a pre-chamber having a pre-chamber injector, an igniter, and a pre-chamber port structured to introduce a purge gas into the pre-chamber. The system further includes an exhaust gas recirculation system to dilute a main charge introduced into the cylinder. The ignition system improves engine efficiency and lowers emissions.

主权项

1. A method of controlling an engine, the method comprising:
determining the speed and load of the engine; introducing charge gases into a combustion cylinder of the engine, the charge gases including an air portion and a recirculated exhaust gas portion; introducing a first prescribed amount of fuel into the charge gases to form a main charge; introducing a purge gas into a pre-chamber via a port, the pre-chamber defined by a wall with the port formed therethrough, the pre-chamber further in fluid communication with the cylinder, wherein the purge gas at least partially scavenges residual gases generated in a preceding combustion cycle from the pre-chamber prior to a subsequent combustion cycle; introducing a second prescribed amount of fuel into the pre-chamber to form a pre-chamber charge; igniting the pre-chamber charge using an igniter at least partially disposed in the pre-chamber, wherein ignition of the pre-chamber charge subsequently ignites and combusts the main charge; and adjusting an amount of the recirculated exhaust gas portion introduced into the cylinder for the subsequent combustion cycle based on the speed and load of the engine, wherein a timing of introducing the purge gas is based on the amount of recirculated exhaust gas portion introduced into the cylinder.