초록 ▼

A protection system for a pressure-charged (supercharged) combustion engine. In normal operation, the pressure-charging is controlled and/or regulated to a specifiable desired setpoint value P Setpoint. For the case of over-boosting of the internal combustion engine, various protective measures are

A protection system for a pressure-charged (supercharged) combustion engine. In normal operation, the pressure-charging is controlled and/or regulated to a specifiable desired setpoint value P Setpoint. For the case of over-boosting of the internal combustion engine, various protective measures are provided, which are used in dependence upon the extent of over-boosting. In the case of a first protective measure, the control and/or regulation of the pressure-charging is switched off, and a final controlling element, which influences the pressure-charging, is adjusted to a predeterminable position. In the case of a second protective measure, the fuel metering to individual cylinders is interrupted in accordance with a predetermined skip pattern. If it is not possible to achieve an adequate reduction in the pressure-charging by this means, the system switches successively to further skip patterns with a higher skip frequency.

대표청구항 ▼

A method for protecting a supercharged internal combustion engine, comprising the steps of: controlling a supercharging of the internal combustion engine as a function of a predetermined setpoint value, Psetpoint, when the internal combustion engine is in a normal operating condition; intervening in

A method for protecting a supercharged internal combustion engine, comprising the steps of: controlling a supercharging of the internal combustion engine as a function of a predetermined setpoint value, Psetpoint, when the internal combustion engine is in a normal operating condition; intervening in the controlling of the supercharging of the internal combustion engine when the internal combustion engine is in a first stage of an over-boosting condition; controlling a metering of fuel into the internal combustion engine when the internal combustion engine is in a second stage of the over-boosting condition; wherein the step of controlling the metering of fuel includes skipping the metering of fuel to a predetermined cylinder of the internal combustion engine as a function of at least one predetermined skip pattern, a first predetermined skip pattern having a first skip frequency being activated when the internal combustion engine achieves the second stage of the over-boosting condition and a second predetermined skip pattern having a second skip frequency being activated when a signal determined as a function of the supercharging of the internal combustion engine indicates a predetermined condition, the second skip frequency being higher than the first skip frequency.