Hitachi Construction Machinery Malaysia

The ZW Series is equipped with a clean but powerful engine to comply with Tier 3 and Stage III A. An engine emission regulations effective in the U.S. EPA and European Union from 2006. Exhaust gas is partly re-combusted to reduce particulate matter (PM) output and lower nitrogen oxide (NOx) levels.

An injection pump and an injector are paired at each cylinder to inject fuel into the cylinder at an ultra-high pressure. By electronic control of the governor, fuel injection timing and amount can precisely be controlled. This helps reduce (PM) Particulate Matter, nitrogen oxide (NOx) fuel consumption and vibration.
Important: The use of fuels other than diesel fuel (JIS K-2204) (ASTM 2-D) is prohibited. Otherwise, the engine may be damaged.

Approximately 95 % of the ZW Series can be recycled. The resin parts are marked to facilitate recycling. The machine is completely lead-free. The radiator and oil cooler are made from aluminum and all wires are lead-less. In addition, bio-degradable hydraulic oil is available for jobsites where special environmental care is required.

A number of features make this machine quieter. First, isochronous control of the engine speed means a restriction of engine speed during no-load and light-duty operation to suppress sound. A fan with curved blades reduces air resistance and airflow noise. Third, a time-tested muffler suppresses engine noise significantly and reduces emissions. This advanced low noise design complies with the 2000 / 14 / EC, Stage II, directive effective in the European Union from 2006.

The HS fan is capable of reducing air resistance and air flow sound are utilized at the radiator and oil cooler for quieter operation.

The cylinder block and ladder frame are strengthened to reduce engine sound.