Lehmann & Michels - Engine Performance Analysis and Measurement Instruments

LEHMANN & MICHELS GmbH provide a performance analysis service for diesel, gas, steam and compressor engines in the marine industry with the aim of achieving optimum use of power and energy and to enable the customer to carry out Condition Based Maintenance (CBM) combined with Planned Maintenance (PM).

LEHMANN & MICHELS also specialise in engine MIP systems, one of the key technical factors for performance reporting. These instruments range from electronic indicators and permanent computerized MIP systems that enable 24hr engine monitoring to shaft power measuring systems.

HFO homogenizers / emulsifiers and calibration instruments for pressure and temperature measurement are a part of the company’s supply program as well as mechanical and electronic deflection indicators, metal thickness measuring instruments, bilge water cleaning and sludge de-watering systems.

ENGINE PERFORMANCE ANALYSIS AND REPORTING

LEHMANN & MICHELS offer engine performance analysis using a team of experts from many different fields. The aims of the engine performance analysis service include increasing availability to achieve better operational reliability and reducing fuel consumption. It is possible to base maintenance and repair costs on hard facts, not just time, paving the way for Condition Based Monitoring (CBM) and to also be well informed about the actual condition of the engine.

PREMET – ELECTRONIC INDICATORS

PREMET electronic indicators are designed and manufactured for use on diesel and gas applications for the marine market and mobile / stationary power stations and are not affected or restricted by heavy fuel oil.

It is possible to measure and record peak of pressure (pmax), course of pressure (p/alpha), maximum increase in pressure (dp/da) and vibration. This data can be used to analyse:

• Indicated power (KW/hp)
• Mean Indicated Pressure (MIP)
• Power distribution
• Ignition pressure distribution
• Revolution (rpm)
• Torsional vibration

The PREMET software offers several diagrams to analyse combustion and pressure changes in the cylinders. The data can easily be compressed to quickly send files by email or satellite to the main office.

PREMET online – PERMANENTLY INSTALLED MIP SYSTEMS

LEMAG PREMET online is a permanently installed system developed for measurement of cylinder pressure on diesel and gas engines. It monitors:

• Mean Indicated Pressure (MIP)
• Maximum cylinder pressure
• Indicated power (KW/hp)
• Torsional vibration
• Expansion pressure
• Main trend function

In this system each cylinder is equipped with a LEMAG PREMET online pressure sensor. These sensors are attached to the existing indicator valves which all measure the cylinder pressure at the same time. This online information is then transmitted to a central computer for analysis.

LEMAG SHAFTPOWER – PERMANENT POWER MEASURING SYSTEMS

LEMAG Shaftpower is a permanently installed system that measures the actual power output of the ship's propulsion engine. It operates absolutely contact free and does not use strain gauges.

The measured data is displayed in 'real-time'. Comparing the actual data with the pre-set 'propeller curve' helps the operator avoid unintentionally overloading the engine.

As an option it is possible to measure fuel consumption, enabling the crew to optimize cruising speed and trim.

LEMAG SLASHPOL – HFO HOMOGENIZER / EMULSIFIER FOR REDUCED Nox EMISSIONS

The LEMAG Slashpol HFO homogenizer / emulsifier reduces NOx emissions and improves the combustion of every engine at low investment costs and reduces visible smoke.

The surface layers of combustion residues on turbochargers, exhaust ducts, piston crowns and rings, cylinder liners and injection nozzles are also significantly reduced.