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IMES is a privately owned company founded by Stefan Neumann in 1996. It based in the town of Kaufbeuren, in the picturesque Allgäu region of Bavaria, Southern Germany. IMES specializes in electronic measurement, monitoring and testing of cylinder pressure on engines and compressors, based on its high precision TION thin film pressure sensors.

IMES counts all the world’s major engine manufacturers among its customer base and IMES sensors, electronic pressure indicators and combustion monitoring systems are employed on a wide range of diesel, gas and dual-fuel engines, on ships and locomotives and in power and cogeneration plants and pipeline compressor stations all around the world.
Press Release, September - 2020

New cylinder pressure sensor generation with extremely robustness for new thermodynamic control concepts on high efficient marine gas engines


The development of modern gas engines is closely related to the measurement and processing of the cylinder pressure, thus with the development of cylinder pressure sensors itself.
At first, cylinder pressure sensors have been used within gas engines management to detect the peak pressure and the detection of knocking and misfiring. The primary goal was to balance the different cylinders and thus to get a smooth engine run.

During the last 5-10 years the development of gas engines reached operating ranges, where now the knowledge of the combustion process of every cylinder in real-time is strictly needed. Moreover, the trend to higher indicated mean effective pressure (IMEP) for gas engines in the broad range of 100... 1800 rpm comes along with additional challenges to the cylinder pressure sensors. Beside the IMEP, also the Heat Release Rate (HRR), Mass Fraction Burned (MFB) as well as other specific thermodynamic values gain more and more importance for gas engine control, even for serial applications.

Other requirements from engine manufacturer regarding the robustness of cylinder pressure sensors are also getting more challenging. Some examples here are (regular) peak pressures of up to 300 bar, high vibration load, shocks up to 1000g and maximum speed of pressure change of up to 1.000 bar/ms.

IMES as a leading manufacturer of cylinder pressure sensors has developed its new cylinder pressure sensor generation type HTT-06CA and CPS-03CA incl. IP69 protection class to fulfil the engine manufacturer requirements for application on new high efficiency gas engines.