Device for controlling high-pressure fuel supply pump, and high-pressure fuel supply pump

A control device for controlling a high-pressure fuel supply pump comprising:

• an anchor;
• a fixed core configured to attract the anchor with an electromagnetic force;
• a suction valve configured to be opened or closed when the anchor is sucked by the fixed core;
• and an electromagnetic force generator configured to generate the electromagnetic force when applied with a driving voltage, wherein
• the control device comprises a controller configured to perform control to lower a driving current from a peak current before a timing, the timing being a timing at which the anchor is sucked by the fixed core and collides in an operation state, the operation state being a state where an engine is under no load and an engine rotation speed is equal to or less than a set rotation speed,
• wherein the controller is configured to estimate a timing at which the anchor is sucked by the fixed core and collides, by performing signal processing on a driving current flowing by the driving voltage, and to perform control to lower a driving current from a peak current before an estimated timing.

A control device for controlling a high-pressure fuel supply pump comprising:

• an anchor;
• a fixed core configured to attract the anchor with an electromagnetic force;
• a suction valve configured to be opened or closed when the anchor is sucked by the fixed core;
• and an electromagnetic force generator configured to generate the electromagnetic force when applied with a driving voltage, wherein
• the control device comprises a controller configured to perform control to lower a driving current from a peak current before a timing, the timing being a timing at which the anchor is sucked by the fixed core and collides in an operation state, the operation state being a state where an engine is under no load and an engine rotation speed is equal to or less than a set rotation speed,
• wherein the controller is configured to estimate a timing at which the anchor is sucked by the fixed core and collides by differentiating the driving current flowing by the driving voltage once, and to perform control to lower a driving current from a peak current before an estimated timing.