Proportional air flow delivery control for a compressor

A service pack system, comprising:

• an engine;
• a pneumatic air compression system driven by the engine and configured to produce compressed air from inlet air, wherein the pneumatic air compression system comprises:
• an inlet valve;
• and
• an inlet valve control piston configured to actuate the inlet valve via pressure within the inlet valve control piston;
• a pneumatic flow control system comprising a proportional control valve having a proportionally variable activation state;
• and
• a controller configured to vary the activation state of the proportional control valve to regulate the pressure within the inlet valve control piston to proportionally regulate a position of the inlet valve to regulate the flow of the compressed air produced by the pneumatic air compression system in a variable manner, and to regulate a power demand placed on the engine by the pneumatic air compression system in a variable manner.

A service pack system, comprising:

• an engine;
• a pneumatic air compression system driven by the engine and comprising a flow control member and being configured to receive inlet air and to compress the inlet air to produce compressed air;
• and
• a pneumatic flow control system comprising a manual control valve having a proportionally variable activation state, wherein varying the activation state of the proportional control valve regulates a pressure acting on the flow control member to regulate the flow of the compressed air produced by the pneumatic air compression system in a variable manner, and to further regulate a power demand placed on the engine by the pneumatic air compression system in a variable manner.

A service pack system, comprising:

• an engine;
• a pneumatic air compression system driven by the engine and comprising an inlet valve, wherein the pneumatic air compression system is configured to receive inlet air and to compress the inlet air to produce compressed air;
• and
• a pneumatic flow control system comprising a proportional control valve having a proportionally variable activation state and being coupled to the inlet valve, wherein varying the activation state of the proportional control valve regulates a position of the inlet valve to regulate the flow of the compressed air produced by the pneumatic air compression system in a variable manner, and to further regulate a power demand placed on the engine by the pneumatic air compression system in a variable manner.