Robert Boschgmbh

Andreas Bethmann

Christof Thiel

Armin Hassdenteufel

Matthias Heinkele

Kai Jakobs

Sven Merkle

Jochen Hofstaetter

Andre Yashan

Markus Stalitza

Matthias Pfau

Herbert Kolly

Isabelle Elsner

Steffen Ziel

A reciprocating piston internal combustion engine includes: a sensor system on a gas exchange valve which has a valve head situated at a first end of a valve stem; a lever element which engages at a second end of the valve stem and which is designed to actuate the gas exchange valve by displacing the valve head; a detection element which, upon actuation of the gas exchange valve, is displaced along a displacement path; and a sensor device configured to ascertain a position of the detection element. The sensor device is situated in such a way that the detection element, during a displacement along a portion of the displacement path, moves predominantly in a movement toward the sensor device or away from the same, thereby providing a measurement of valve timing of the gas exchange valve.

Reciprocating piston internal combustion engine including a sensor system on a gas exchange valve

A method is provided for controlling a filling (rl) of an internal combustion engine () including the camshaft phase adjustment in the case of a predefined setpoint filling (rlsol), including the following steps:

Method and device for controlling a filling in a cylinder of an internal combustion engine

A method for diagnosing a motor vehicle and a control device for controlling a motor vehicle, a plurality of characteristic values, which are used for controlling the motor vehicle, being adapted. The adapted characteristic values are compared in each case to a threshold value, and an error message is generated if the adapted characteristic value goes beyond the threshold value. Normalized characteristic values are formed by a normalization, and a possibly faulty component of the motor vehicle is identified by a joint observation of a plurality of normalized characteristic values.

Method for the diagnosis of, and control device for controlling a motor vehicle

A device for detecting a leak in a cylinder of an internal combustion engine, the internal combustion engine including a piston in the cylinder, the piston being attached to a crankshaft, includes a time interval determining unit which is designed to determine a first time interval in which the crankshaft passes a preset first angle segment before reaching the ignition top dead center of the piston in the cylinder, and to determine a second time interval in which the crankshaft passes a preset second angle segment after reaching the ignition top dead center of the piston in the cylinder, and a cylinder leak determining unit which is designed to detect a leak in the cylinder as a function of the first time interval and as a function of the second time interval.

Device and method for detecting a leak in a cylinder of an internal combustion engine

A method for determining the operability of at least one pressure sensor of an internal combustion engine of a motor vehicle, in which the ambient pressure is first determined by the pressure sensor, and the ambient pressure determined by the pressure sensor is then compared to the ambient pressure determined by a reference pressure sensor not belonging to the internal combustion engine.

Method for determining the operability of a pressure sensor

In a method for operating an internal combustion engine, a sensor for detecting and/or an actuator for setting a performance quantity of the internal combustion engine is/are monitored for the presence of a malfunction. Monitoring is performed at a first operating point of the internal combustion engine at a lower load and at an operating point of the internal combustion engine at a higher load. The two operating points are set alternatingly, and at least one of the two operating points is set multiple times for a single monitoring operation.

Method for operating an internal combustion engine, computer program product, computer program, and control and/or regulating device for an internal combustion engine

In a method for error diagnosis of an ambient-pressure sensor and an intake-manifold pressure sensor of an internal combustion engine, a defective intake-manifold pressure sensor or a defective ambient-pressure sensor is unambiguously detected by measuring the signals of the ambient-pressure sensor and the intake-manifold pressure sensor with the internal combustion engine stopped, and comparing the ambient pressure represented by the sensor signal of the ambient-pressure sensor to the intake-manifold pressure represented by the sensor signal of the intake-manifold pressure sensor to determine a pressure difference. If the determined pressure difference is greater than a predetermined maximum value, at least one additional sensor signal is measured with the internal combustion engine running, which additional sensor signal is used for identifying the defective sensor.

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Ditzingen, Germany

Andreas Bethmann