Fuel system control

An evaporative emissions control system associated with a vehicle fuel tank and configured to recapture and recycle fuel vapor emitted from the fuel tank, the evaporative emissions control system comprising:

• at least one vent valve configured to selectively open and close a vent;
• a fuel level sensor configured to sense a fuel level in the fuel tank;
• a pressure sensor configured to sense a pressure in the fuel tank;
• an accelerometer configured to measure an acceleration of the vehicle;
• and
• a cam driven tank venting control assembly having a rotary actuator that rotates a cam assembly based on operating conditions, the cam assembly having a first cam having a first cam profile configured to open and close a first vent valve of the at least one vent valve;
• wherein the cam driven tank venting control assembly determines if the vehicle is not moving based on a signal from the accelerometer sensor, determines if a fuel level in the fuel tank is increasing based on a first signal from the fuel level sensor, determines if a pressure in the fuel tank is increasing based on a signal from the pressure sensor and, determines a refueling event is occurring if it is determined the fuel level is increasing, the pressure in the fuel tank is increasing, and the vehicle is not moving, and wherein the cam driven tank venting control assembly opens the at least one vent valve in response to determining the refueling event is occurring, wherein the opening comprises actuating the rotary actuator.