Charge-fed pre-chamber assembly

An internal combustion engine, comprising:

• at least one cylinder having a main combustion chamber and a pre-chamber spaced apart from the main combustion chamber;
• an intake manifold fluidly coupled to the main combustion chamber;
• an inlet fluidly coupled to the intake manifold and configured to receive fuel and air to define a charge;
• a cooling device operably coupled to the inlet and the intake manifold;
• a main chamber conduit extending between the cooling device and the intake manifold and configured to provide a first portion of the charge to the main combustion chamber;
• and
• a pre-chamber conduit fluidly coupled to the main chamber conduit and extending between the main chamber conduit and the pre-chamber, the pre-chamber conduit being configured to provide a second portion of the charge to the pre-chamber.

A method for combustion in a combustion chamber of an internal combustion engine, comprising:

• mixing fuel and air to form a charge;
• flowing a first portion of the charge to a main chamber of the engine;
• bypassing the main chamber to flow a second portion of the charge to a pre-chamber volume of the engine;
• igniting the second portion of the charge in the pre-chamber volume;
• and
• delivering the ignited second portion of the charge to the main chamber,
• wherein flowing the first portion of the charge to the main chamber and the second portion of the charge to the pre-chamber volume includes flowing 0.25-5.0% of a total volume of the charge to the pre-chamber volume and flowing 95.0-99.75% of the total volume of the charge to the main chamber.