Abstract: Dual-fuel internal combustion engine with at least two combustion chambers which have a different distance from at least one gas mixer for producing a gas-air mixture, whereby an inlet valve for the gas-air mixture and an injector for liquid fuel is assigned to each of the combustion chambers, and a control device is provided which is configured in a change-over mode to change an amount of energy supplied to the at least two combustion chambers through the gas-air mixture in a first direction, and to change an amount of liquid fuel supplied to the at least two combustion chambers in an opposite, second direction, whereby the control device is designed to determine a time for the change of the amount of liquid fuel in the second direction for each of the at least two combustion chambers according to the distance of the respective combustion chamber from the at least one gas mixer.

Abstract: A dual-fuel internal combustion engine is provided with at least one combustion chamber assigned to an intake valve for a gas-air mixture and to an injector for liquid fuel. A control device performs a switch-over in a switch-over mode, wherein an amount of energy supplied to the at least one combustion chamber by means of the gas-air mixture is changed, and an injected amount of liquid fuel and/or a time of the injection of the liquid fuel is changed. A sensor provides signals characteristic of occurring knock in the at least one combustion chamber, wherein the control device performs the switch-over with evaluation of the sensor signals. The control device performs the evaluation of the sensor signals based on the injected amount of liquid fuel in the at least one combustion chamber.

Abstract: Dual-fuel internal combustion engine with at least two combustion chambers which have a different distance from at least one gas mixer for producing a gas-air mixture, whereby an inlet valve for the gas-air mixture and an injector for liquid fuel is assigned to each of the combustion chambers, and a control device is provided which is configured in a change-over mode to change an amount of energy supplied to the at least two combustion chambers through the gas-air mixture in a first direction, and to change an amount of liquid fuel supplied to the at least two combustion chambers in an opposite, second direction, whereby the control device is designed to determine a time for the change of the amount of liquid fuel in the second direction for each of the at least two combustion chambers according to the distance of the respective combustion chamber from the at least one gas mixer.