Exhaust emission aftertreatment

Ready today for the EU Stage V emission regulation

The demands on engine design are becoming ever greater due to stricter exhaust gas regulations. With the introduction of EU Stage V (according to the proposal of the EU Commission from September 25th, 2014), the permissible emission values are being driven to even lower levels. With its engines in the power range up to 56 kilowatts, Hatz already chose the right technology at an early stage in order to meet these challenges successfully.

Always one step ahead. Hatz engines up to 19 kilowatts.

Since 2010, Hatz has been the only manufacturer whose entire engine range below 19 kilowatts has qualified to EPA Tier 4. As the requirements of the new EU Stage V emission level in this engine class correspond with the previous US standards, the Hatz engines already fulfil the future EU exhaust gas regulations today.

Meets all expectations up to 8 kW
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Single-cylinders with maximum power
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No changes with Stage V for Hatz customers

With the introduction of EU Stage V, diesel engines with a power output of less than 19 kilowatts will also be subject to exhaust gas regulation in the European Union for the first time. Since 2010, all Hatz engines in this performance class had been delivered around the world subject to EPA Tier 4 specifications. EU Stage V corresponds in emission values and test specifications to EPA Tier 4 of model year 2012. Thus, Hatz engines up to 19 kilowatts already meet the requirements of EU Stage V today. No additional exhaust gas treatment is required.

Fit for the future. Hatz engines above 18.4 kilowatts.

The anticipated requirements of the new EU Stage V emission level cannot be fulfilled by diesel engines with a power output of more than 19 kilowatts without diesel particulate filters. Hatz already took this path at an early stage in the development of the new H-series engine generation and is thus well prepared for the future.

The highest torque in its class in the market today
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Designed for compact machines
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The most powerful Hatz Diesel in a small space
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Based on a perfectly designed basic engine

In the development of the H-series, Hatz had already placed the emphasis on future stricter exhaust gas regulations. The specifications for the H-engines included low fuel and oil consumption, friction losses as low as possible and downsizing for optimum load profile. In addition, the combustion is perfected with iHACS (intelligent Hatz Advanced Combustion Strategy). All of this results in fewer particulates being emitted, hence making the exhaust gas treatment more efficient. Engines of the H-family are therefore designed to be extremely compact and provide maximum flexibility during installation in the machine.

Customized DPF system for Stage V models

With optiHEAT and intensive research and development work, the Hatz engineers have been successful in the design of the matching DPF. Here, reasonable dimensioning of the DPF substrate (high storage capacity vs. long heating time) plays a role – as does a reasonable temperature range or the technical execution as an active or passive system. The regeneration strategy is also crucial for the conception of the DPF system. It must be brought into compliance with the operation time per machine use and service life of the machine.

In this context, “optimised” not only means the ideal model size design of the DPF system for the requirements of the machine, but also optimum adaptation to the load/temperature profile under real conditions as well as a regeneration strategy matched to requirements. The expandable modular system also allows flexible installation and simple maintenance.

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