Abstract: A method for operating an internal combustion engine with a motor, having a moving machine part and at least one machine element which retains the moving machine part and is subject to wear, such as, for example, a supporting, sealing, guiding or the like retaining machine element that is subject to wear during operation relative to the moving machine part, which machine element, because of the wear, is service-life-limiting for the operation of the internal combustion engine, wherein—for the operation of the internal combustion engine, a service-life-limiting time interval until the next maintenance of the internal combustion engine is specified, and—the internal combustion engine has a number of service-life-limiting machine elements, wherein for the at least one service-life-limiting machine element a remaining service life is forecast and the service-life-limiting time interval is determined therefrom.

Abstract: A method for monitoring crankcase pressure, in which a learning curve is calculated according to a target-actual deviation of the crankcase pressure, the target crankcase pressure is adjusted according to the learning curve, and a limit curve is calculated according to the target crankcase pressure. The actual crankcase pressure is monitored for exceedance of the limit curve. After an engine start, upon identification of a steady-state operation of the internal combustion engine, the actual crankcase pressure is compared with a limit value and, if the limit value is identified as being exceeded, the learning curve and, as a result, the limit curve are reset to their initial values.

Abstract: A method for operating an internal combustion engine with a motor, having a moving machine part and at least one machine element which retains the moving machine part and is subject to wear, such as, for example, a supporting, sealing, guiding or the like retaining machine element that is subject to wear during operation relative to the moving machine part, which machine element, because of the wear, is service-life-limiting for the operation of the internal combustion engine, wherein—for the operation of the internal combustion engine, a service-life-limiting time interval until the next maintenance of the internal combustion engine is specified, and—the internal combustion engine has a number of service-life-limiting machine elements, wherein for the at least one service-life-limiting machine element a remaining service life is forecast and the service-life-limiting time interval is determined therefrom.

Abstract: A method for monitoring crankcase pressure, in which a learning curve is calculated according to a target-actual deviation of the crankcase pressure, the target crankcase pressure is adjusted according to the learning curve, and a limit curve is calculated according to the target crankcase pressure. The actual crankcase pressure is monitored for exceedance of the limit curve. After an engine start, upon identification of a steady-state operation of the internal combustion engine, the actual crankcase pressure is compared with a limit value and, if the limit value is identified as being exceeded, the learning curve and, as a result, the limit curve are reset to their initial values.