Systems and methods for monitoring and controlling crankcase combustible gas concentrations

A purge controller configured to manage an internal combustion engine, the purge controller comprising:

• a memory storing computer-executable instructions;
• and
• a processor in communication with the memory, the computer-executable instructions causing the processor to perform acts comprising:
• receiving first information indicating a concentration of a blow-by gas within a crankcase of the internal combustion engine;
• determining if the concentration is at or above a high concentration setpoint, requiring an increase of a purge of the gas from the crankcase of the internal combustion engine;
• and
• upon determining that the concentration is at or above the high concentration setpoint, increase an opening of a throttle valve on an intake of the crankcase to increase a flow of air into the crankcase.

A combustion engine system, comprising:

• an internal combustion engine having a combustion cylinder configured to combust a fuel and a crankcase configured to store at least a portion of lubricating oil to lubricate one or more components of the internal combustion engine;
• a throttle valve at an inlet of the crankcase, the throttle valve configured to receive air for purging the crankcase and to direct the air to into the inlet of the crankcase;
• a venturi valve at an outlet of the crankcase, the venturi valve configured to receive a high pressure fluid through the venturi valve to create at least a partial vacuum at the outlet of the crankcase;
• a concentration detector for detecting a concentration of a combustible gas within the crankcase;
• and
• a purge controller configured to manage an internal combustion engine, the purge controller comprising:
• a memory storing computer-executable instructions;
• and
• a processor in communication with the memory, the computer-executable instructions causing the processor to perform acts comprising:
• receiving first information from the concentration detector indicating a concentration of the combustible gas from the concentration detector;
• determining if the concentration is at or above a high concentration setpoint, requiring an increase of a purge of the combustible gas from the crankcase of the internal combustion engine;
• and
• upon determining that the concentration is at or above the high concentration setpoint, increase an opening of a throttle valve on an intake of the crankcase to increase a flow of air into the crankcase.