4M42 Hatz 4M42 Specifications & Technical Data (2017—2026)

Wide power range, one engine platform

The M-series of the Hatz diesel engines is available as two-cylinder (2M41) with 15 up to 28 kilowatts, three-cylinder (3M41) with 22 up to 43 kilowatts and four-cylinder (4M41 and 4M42) with 30 up to 56 kilowatts. This saves both time and money for the development and construction of entire machinery series.

Hatz M-series: Always ready for operation

The Hatz M-series is the long-running success among the industrial diesel engines. The 2, 3 and 4 cylinder engines have been successfully established in the market for about 30 years – and they are still considered to be unbeatable. The rugged basic power train, above all the strongest crankshaft of all engines in the market, has remained unchanged since the market launch. So running times of many tens of thousands of hours are no problem for the engines in the Hatz M-series.

Environmental aspects

Hatz diesel engines in the L/M-series are the only exhaust-reduced, air-cooled engines available in this power range. The Hatz 4M42 is fitted with an exhaust gas recirculation. They fulfill the strict emission standards of EU Stage IIIA as well as the regulations of the US EPA Tier 4 interim. In the configuration below 19 kilowatts the Hatz 2M41 even fulfils the requirements of EU Stage V and US EPA Tier 4 final.

Engine Mounting Recommendations

Flexible mounting is normally recommended for M series engines. This mounting keeps the noise level of the driven unit low. Another possibility is the flexible mounting with elevated engine brackets (not shown here). Rigid mounting is only possible up to an operating speed of 2300 rpm.

Unique automatic engine protection

The integrated, intelligent, mechanical automatic engine protection protects the engine. When a cooling fan malfunctions, there is not enough oil, or the inclination is too high, the engine is automatically stopped to prevent engine damage.

Maintenance and repair with little effort

All necessary points for oil and air filter service as well as for valve adjustment are easily accessible from the outside. This facilitates and speeds up the maintenance significantly. The M-series is built with a modular construction principle. Length-independent components such as cylinder heads, cylinders, conrods, bearing shells, injection nozzles, injection pumps, air filters, engine regulators, starter, and alternator are identical for all engines. Engine repair is easier and more cost effective. Furthermore, storekeeping for wearing parts is much easier to organize.

Simple operation

The M-series engines are fitted with an automatic hydraulic belt tensioner, self-bleeding injection pump, automatic cold start feed, and a signal transmitter for air filter maintenance as standard. Operation is also therefore easy even for non-specialists without long familiarization.

Fuel consumption and cold start

M-series engines are among the most efficient in the market. Fuel consumptions of 212 grams per kilowatt hour testify to the optimized combustion process. 6-hole VCO nozzles, as well as the monoblock single pumps, and the optimized combustion chamber geometry all make their contribution to this. Without a pre glow system the engines start reliably as low as –10 °C; with a pre glow system and corresponding resources even –32 °C is no problem.