Device for controlling at least one switchable valve

A non-transitory machine-readable storage medium on which is stored a computer program for controlling at least one switchable valve, the computer program, when executed by a controller, causing the controller to perform the following steps:

• producing, during controlling of the valve for each of a plurality of first injections, a brake impulse that slows down a valve movement of the valve, a parameter of the brake impulse determining a position of the brake impulse within a control signal that controls the valve for each of the first injections, wherein the valve movement is a valve opening movement or a valve closing movement;
• wherein during the producing step, the parameter which determines the position of the brake impulse within the control signal is incrementally modified from injection to injection of the first injection to incrementally change the position of the brake impulse within the control signal from injection to injection of the first injections;
• measuring, at or after an end of each of the brake impulses, current flowing through the valve to provide respective measured quantities, each respective measured quantity of the respective measured quantities corresponding to a measurement of the current flowing through the valve at or after a different one of the brake impulses;
• based on a curve formed using the respective measured quantities, determining a modified parameter, the modified parameter determining a modified position, within control signals of the valve for second injections subsequent to the first injections, of a modified brake impulse within the control signals which slows down the valve movement of the valve;
• and
• producing within the control signals for the second injections, the modified brake impulse at the modified position, using the modified parameter.

A control device designed to control at least one switchable valve, the control device configured to:

• produce, during controlling of the valve for each of a plurality of first injections, a brake impulse that slows down a valve movement of the valve, a parameter of the brake impulse determining a position of the brake impulse within a control signal that controls the valve for each of the first injections, wherein the valve movement is a valve opening movement or a valve closing movement;
• wherein during the producing, the parameter which determines the position of the brake impulse within the control signal is incrementally modified from injection to injection of the first injection to incrementally change the position of the brake impulse within the control signal from injection to injection of the first injections;
• measure, at or after an end of each of the brake impulses, current flowing through the valve to provide respective measured quantities, each respective measured quantity of the respective measured quantities corresponding to a measurement of the current flowing through the valve at or after a different one of the brake impulses;
• based on a curve formed using the respective measured quantities, determine a modified parameter, the modified parameter determining a modified position, within control signals of the valve for second injections subsequent to the first injections, of a modified brake impulse within the control signals which slows down the valve movement of the valve;
• and
• produce within the control signals for the second injections, the modified brake impulse at the modified position, using the modified parameter.

A method for controlling at least one switchable valve, comprising the following steps:

• producing, during controlling of the valve for each of a plurality of first injections, a brake impulse that slows down a valve closing movement of the valve, a parameter of the brake impulse determining a position of the brake impulse within a control signal that controls the valve for each of the first injections;
• wherein during the producing step, the parameter which determines the position of the brake impulse within the control signal is incrementally modified from injection to injection of the first injections to incrementally change the position of the brake impulse with the control signal from injection to injection of the first injections;
• measuring, at an end of each of the brake impulses, current flowing through the valve to provide respective measured quantities, each respective measured quantity of the respective measured quantities corresponding to a measurement of the current flowing through the valve at or after a different one of the brake impulses;
• based on a curve formed using the respective measured quantities, determining a modified parameter, the modified parameter determining a modified position, within control signals of the valve for second injections subsequent to the first injections, of a modified brake impulse within the control signals which slows down the valve closing movement of the valve;
• and
• producing within the control signals for the second injections, the modified brake impulse at the modified position, using the modified parameter.