Process for controlling an internal combustion engine, especially with lean operation, to achieve pre-determined nitrogen oxide emission values comprises controlling the lambda value of a fuel/air mixture to be burnt in the engine or a substitute engine pa...

The method involves measuring the actual power of the engine and the temperature in the cylinder (4) or in the exhaust tract (38) and reducing the desired power in the event of a power break-in of the actual power and then temporarily interrupting the fuel...

The object of the present invention is to provide a fuel return device whereby the residual amounts of fuel in a plurality of fuel tanks can be made approximately equal. According to one preferred mode of the present invention, the fuel return device compr...

A fuel gas mixer and a method for controlling a fuel gas mixer comprising a throttle valve (4) provided for opening and closing an air intake passage (2) of an engine, and a fuel gas supply passage (6) connected to said air intake passage at a position ups...

Apparatus and methods for determining a desired charge density for an engine (12) having an inlet air pathway (22). A first characteristic indicative of an engine speed of the engine (12) is determined. A second characteristic indicative of a load on the e...

Device for controlling a spark-ignited internal combustion engine, in particular a stationary supercharged gas Otto engine, with a power control device acting on at least one power actuator, wherein an ignition timing control device (8,9,10) adjusts the ig...