Abstract: An internal combustion engine and method of operating same is provided which includes a plurality of first cylinders and at least one second cylinder. The at least one second cylinder serves as an input cylinder in that a portion of the exhaust gas therefrom is fed by way of an exhaust gas recirculating system to carbureted fuel for the engine. The engine includes an injection system for injecting fuel into the first cylinders and into the at least one second cylinder. The injected fuel quantity of the at least one second cylinder is controlled independently of the injected fuel quantity of the first cylinders.

Abstract: For an internal combustion engine, an injector (1) with piezo actuator (2) is provided. In addition, there is provided a means for recognition for recognizing the lying position or opening of the piezo actuator (2) on a control valve. The means for recognition includes a piezo element (3).

Abstract: A device for recirculating exhaust gas during the operation of multi-cylinder internal combustion engines. The cylinders of the internal combustion engine are divided into two groups. The waste gas of one group, preferably of one cylinder, can be supplied to the suction line of the internal combustion engine via an exhaust gas recirculation line. The exhaust gas recirculation line is controlled by a controllable valve in said recirculation line. A non-return valve which is preferably configured as a non-return flap in the exhaust gas collector line of the internal combustion engine automatically closes or opens a passage between two regions of the exhaust gas collector line according to the position of the valve device in the exhaust gas recirculation line. The non-return valve can be easily integrated into the exhaust gas collector line without the need for a specific control, even when there is very little room available.

Abstract: The invention relates to a device for recirculating exhaust gas during the operation of multi-cylinder internal combustion engines. The cylinders (2,3) of the internal combustion engine are divided into two groups. The waste gas of one group, preferably of one cylinder (3), can be supplied to the suction line (4) of the internal combustion engine via an exhaust gas recirculation line (7). The exhaust gas recirculation line is controlled by a controllable valve (11) in said recirculation line (7). A non-return valve (10) which is preferably configured as a non-return flap in the exhaust gas collector line (5) of the internal combustion engine automatically closes or opens a passage between two regions of the exhaust gas collector line (5) according to the position of the valve device (11) in the exhaust gas recirculation line (7). The non-return valve (10) can be easily integrated into the exhaust gas collector line (5) without the need for a specific control, even when there is very little room available.

Abstract: An accumulator-type injection system having an injector and a control valve connected with the injector for controlling injection. In a first switching position of the control valve, an injector body fuel duct, which leads in front of the orifices, is connected with a fuel accumulator. In a second switching position, a passage is opened up by the control valve which connects the fuel duct with a return flow. As a result, in the injection pauses, the fuel pressure in front of the orifices can be lowered approximately to the ambient pressure so that the inclusion of water in front of the orifices takes place at a low pressure.