A NEW environmentally-friendly power unit for power cars has been developed by MTU, Germany. The MTU Sports Stage 3A-PowerPack is a low-emission compact drive unit incorporating a 6H-1800 engine which has been upgraded to perform at up to 360kW.
The new unit, based on the original PowerPack unit developed two years ago with a 350kW 6H-1800 engine, will meet new European Union Stage 3A regulations on emissions which are due to be introduced in 2006. MTU hopes to begin trials of the unit in a Turbostar dmu next year.
Like its predecessor, the new modular unit offers a complete system for subfloor drive in power cars. It comprises the engine, transmission/generator, hydraulics, cooling system, oil and air filter system, exhaust system, and compressors, plus peripheral components for the drive and power supply.
The latest model is lighter in weight as well as more powerful. It has a six-cylinder horizontal motor with a 12.8-1itre cubic capacity. The engine is designed using four-valve technology and has a high-power injection system in which the pumps are equipped with solenoid valves. A two-cylinder brake air compressor and an enlarged oil pan with a capacity of more than 40 litres supplement the fittings.
MTU says the modular construction of the Stage 3A-PowerPack means that it can be customised to adapt to most standard vehicle types. A varied range of components and auxiliary units can be integrated into the robust common frame, including components for onboard power supply, climate control, and the oil and air filter system. All mechanical and electrical interfaces within the overall system are retained. The PowerPack can be supplied with a diesel-mechanical, diesel-hydraulic, or diesel-electric power system.
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