| 摘要 |
A control system and method for an internal-combustion engine with which the torque output of the internal-combustion engine can be reduced by suppressing the injection of fuel in individual cylinders in accordance with specifiable suppression patterns or by shifting the ignition firing point or the ignition angle. The suppression pattern is selected in dependence upon the desired torque reduction. The suppression of cylinders is allowed, however, only when in the case of the selected suppression pattern the number of cylinders to be suppressed per working cycle lies above a threshold value. The threshold value is selected in dependence upon the operating state of the internal-combustion engine, in particular on at least one of the following operating parameters: temperature of the internal-combustion engine, exhaust gas temperature, catalytic-converter temperature, load, rotational frequency, and a variable indicating whether a warm-up function of the internal-combustion engine has been activated. |
