MAHA Maschinenbau Haldenwang

	MPM-4 measurement unit

MAHA has developed the new MPM-4 measurement unit for this purpose. Its high measurement accuracy is a distinguishing feature. “MPM” stands for diesel particle measurement system. The unit is extremely small (about the size of a shoe box) and therefore easy to handle and – most importantly – reliable for use in the workshop. Its price is competitive with traditional exhaust gas measuring equipment. This innovation also demonstrates MAHA’s capacity for developments for general vehicle inspections, which will be one of the leading future objectives.

Measurement Principle and internal MAHA Development

The measurement procedure analyses the exhaust flow. The particle concentration is displayed as mg/m3. As a result of many years of development at MAHA, a principle of measurement and a device have been produced which can detect very small particles (smaller than 0.001 mm) in the exhaust flow with sufficient accuracy, determine their concentration and display the result by electronic processing. In the principle applied the measurement of exhaust gas opacity is combined with the detection of these tiny particles using lasers. The greater precision and reliability has been proven in comprehensive series of tests. Already in 2004 MAHA completed a concept study on the measurement of fine particulate in diesel exhaust. The time after that was used to create an optimal instrumental implementation with superior user friendliness.

The Importance of Precise Measurement

The effective, precise determination of fine particulates in the emissions of diesel engines, which are common in vehicles today, serves to protect human health on one hand. Recognised exposure limits for damage to health can now be quantified. On the other hand, only in this manner can the statutory limits - which may become stricter in the future - be measured. The basic principle that only accurate measurement results allow meaningful evaluations also applies here.

Particular Characteristics of Diesel Engines

Diesel engines in newer vehicles (not just passenger vehicles, but also the large number of trucks and other commercial vehicles) usually have inherently lower emissions. The poorer emission quality of older engines or the effect of particle filters can now be shown more precisely than before. It has been found that the emission values of engines can be reduced up to 80% with good maintenance and that properly working filters remove more than 95% of the particles generated. Proving such qualities is now easier with the MPM-4.

MAHA Universality

The MPM-4 from MAHA is thus not only an effective measuring unit for the current evaluation of individual engines, but also demonstrates that MAHA intends to expand its product range for exhaust gas measurement technology and is able to do so. Moreover, this measurement method is already used by the Australian government as a measure for reducing the diesel particle concentration.

Quality – from the very beginning to tomorrow

As a pioneer in the field of brake testing technology, Maha has specialised in the testing of safety-relevant components and driving properties of all types of vehicles for over three decades. MAHA has been active in vehicle lifting technology with great success for over 25 years. Our very own production facilities are the assurance that MAHA products maintain a consistently high quality standard.

With a team of over 1000 employees, our engineers and technicians provide answers and solutions for all questions involving vehicle safety testing and lifting technology. Our clients include vehicle manufacturers, test organisations, governments and workshops. Our extensive sales network guarantees an efficient worldwide service readiness and timely spare part supply. Ongoing expansion of our worldwide presence and strengthening of our service network is our goal in order to respond quickly and efficiently to our customer’s needs.

The possibilities are endless; from individual test lanes up to countrywide test systems with communication networks for vehicle testing. MAHA defines its role not only as an equipment manufacturer but also a potential partner for planning and execution of regional and national testing concepts; a “System-Provider” for vehicle testing. Our know-how in designing “end-of-line” test systems integrated into vehicle manufacturer production lines is the result of an intense exchange of information and opinions among vehicle manufacturers, test organisations and us. Of special reference for these are industrial emission dynamometers for automobile manufacturers or performance dynamometers.

W: www.maha.de