Scania says it will start production from this autumn of a new, 12-litre engine with an electronic engine management system (EMS) which it says brings high performance, low operating costs and low exhaust emissions.
The DI12M EMS derives from the existing 12-litre engine, says Mr Lennart Hjelte, senior vice president and head of Scania Industrial & Marine Engines, and "Then we added new, and higher, demands on performance, emissions and operating economy."
The EMS evaluates data from the engine to adjust injection timing and fuel injected to ensure optimum combustion and fuel consumption in response to operating conditions. Mr Hjelte says "It makes the engines more complex, but it also makes it possible to manage and control the performance."
EMS also logs engine performance on how the engine has been used, power output at a specified engine speed, running times, water temperature and oil pressure during a cycle and it can report problems that may have arisen. The EMS can communicate with other systems via the CAN-bus interface.
The DI12M EMS has one unit injector per cylinder. "The engine has naturally been developed to comply with all foreseeable future emission regulations" says Mr Hjelte. The DI12M EMS complies with both the U.S. Tier 2 emission standards and the European Stage 3 rules, which will go into force in 2007.
The engine shares several vital engine components such as pistons, connecting rods, cylinder heads, cylinder liners with other engines in the Scania range, making for easier parts handling, distribution and maintenance, says Scania.
