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|1. (WO2017184610) INTERNAL COMBUSTION ENGINE|
|Applicants:||BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY
|Title:||INTERNAL COMBUSTION ENGINE|
An internal combustion engine (1 1 ) includes a pre-chamber (53, 105, 351 ). In another aspect, pressure within a pre-chamber is equal to or greater than pressure within a main combustion chamber (43, 107, 355) at Ieast prior to ignition in the main combustion chamber. A further aspect provides a supplemental piston (65, 117, 337) creating pressure and supplying a fuel-air mixture into a prechamber, and a spark or glow plug (61, 359) has an end located within the prechamber for ignition of the mixture therein. In yet another aspect, internal combustion engine control software automatically controls pressure within a turbulent jet ignition pre-chamber, controls a valve-actuator (87, 331 ) to admit a fuel-air charge into the pre-chamber, and causes an ignitor to initiate combustion in the pressurized pre-chamber. This also permits the rate of combustion to be controlled in the primary chamber regardless of the air-fuel ratio or the diluent fraction in the main chamber.