Active engine fuel pressure pulsation cancellation techniques

An engine system, comprising;

• an engine configured to rotatably turn a crankshaft to generate drive torque, the crankshaft also being operable to drive a camshaft of the engine;
• a fuel system comprising:
• a fuel rail configured to house a fuel,
• a fuel pump driven by the camshaft and configured to pump the fuel into the fuel rail, and
• fuel injectors configured to inject the fuel from the fuel rail into the engine;
• a fuel pressure sensor configured to generate an unfiltered fuel pressure signal indicative of a measured pressure of the fuel in the fuel rail;
• an actuator configured to generate liquid-borne cancellation pulsations in the fuel rail in response to a cancellation signal;
• and
• a controller configured to:
• receive the unfiltered fuel pressure signal,
• detect fuel pressure pulsations in the fuel rail based on the unfiltered fuel pressure signal,
• generate the cancellation signal based on an opposite polarity of the fuel pressure pulsations, and
• control the actuator utilizing the cancellation signal to generate the liquid-borne cancellation pulsations to cancel the fuel pressure pulsations in the fuel rail.