Back to results
US 8,096,170 B2Granted
Apparatus for measuring the cylinder internal pressure of internal combustion engines
AssigneeAVL List GmbH
InventorNorbert Mayrhofer
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeAVL List GmbH
InventorNorbert Mayrhofer
Estimating the term…
The invention relates to an apparatus for measuring the cylinder internal pressure of internal combustion engines and, in particular, of gas engines, said apparatus having a first valve (5) which opens into the cylinder interior space, a measurement chamber (6) which can be connected to the cylinder interior space (1a) and can be disconnected from the latter by means of the first valve (5), and a pressure sensor (8) which is arranged in the region of the measurement chamber (6) in order to measure the pressure in the cylinder interior space when the first valve (5) is open. Permanent operation without thermal overload is enabled in such a way that at least one second valve (13) is provided in the region of the measurement chamber (6), said second valve being able to be changed to a closed position at least when the first valve (5) is open in order to seal off the measurement chamber (6) towards the outside.
An apparatus for measuring the cylinder internal pressure of internal combustion engines and, in particular, of gas engines, said apparatus having a first valve (5) which opens into the cylinder interior space, a measurement chamber (6) which can be connected to the cylinder interior space and can be disconnected from the latter by means of the first valve (5), and a pressure sensor (8) which is arranged in the region of the measurement chamber (6) in order to measure the pressure in the cylinder interior space (1a) when the first valve (5) is open, with at least one second valve (13) being provided in the region of the measurement chamber (6), said second valve being able to be changed to a closed position at least when the first valve (5) is open in order to seal off the measurement chamber (6) towards the outside, wherein the first valve (5) comprises a movable valve body (4) in which the pressure sensor (8) is arranged.
An apparatus for measuring internal pressure of a cylinder in an engine, said apparatus comprising:
Dependencies are inferred from the claim text.