Internal combustion engine with coated ignition system component(s)

A method of manufacturing, comprising:

• providing a housing for a rotary engine, the housing including a combustion volume, a structure receptacle, an injector receptacle and an ignitor receptacle, the combustion volume disposed within the housing, the structure receptacle configured to receive a pilot chamber structure and projecting into the housing to the combustion volume, the injector receptacle configured to receive a fuel injector and projecting into the housing to the structure receptacle, and the ignitor receptacle configured to receive an ignitor and projecting into the housing to the structure receptacle;
• applying a wear resistant coating to a combustion volume surface of the housing to provide a coated combustion volume surface, the coated combustion volume surface forming the combustion volume within the housing;
• and
• applying a protective coating to an inner receptacle surface of the housing to provide a coated inner receptacle surface, the coated inner receptacle surface contiguous with the coated combustion volume surface, and the coated inner receptacle surface forming an inner region of the structure receptacle.

An assembly for a powerplant, comprising:

• a housing forming a combustion volume;
• a primary fuel injector configured to inject primary fuel into the combustion volume;
• and
• an ignition system configured to ignite the primary fuel within the combustion volume, the ignition system including a pilot fuel injector, a pilot ignitor and a pilot chamber structure, and the pilot chamber structure including a pilot chamber and a pilot aperture;
• the pilot fuel injector configured to inject pilot fuel into the pilot chamber;
• the pilot ignitor configured to ignite the pilot fuel within the pilot chamber;
• and
• the pilot chamber fluidly coupled with the combustion volume through the pilot aperture;
• wherein the pilot chamber structure is received within a structure receptacle in the housing, and the structure receptacle projects to the combustion volume;
• and
• wherein the pilot chamber, the pilot aperture and at least portion of the structure receptacle adjacent the combustion volume are lined with a bond coating and a thermal barrier coating over the bond coating.