Cummins B Series 3.3L Diesel Engine Wins Innovation&Enviroment Rewards
2009-05-14 Source：english.chinabuses.com
Summarize：Recently, Cummings B series 3.3L Diesel Engine carrying French Mecalac 12MTX Hybrid Excavator won Machinery Innovation&Enviroment Contribution Rewards in Paris International Engineering Machinery Expo ...
Recently, Cummings B series 3.3L Diesel Engine carrying French Mecalac 12MTX Hybrid Excavator won Machinery Innovation&Enviroment Contribution Rewards in Paris International Engineering Machinery Expo,France, on April 21, 2009. The device with Cummins B3.3L 4-cylinder engine, rated power 68 hp (51 kW), driving a set of electric generator and lithium-ion battery system, can save 25% of fuel consumption ,reduce emissions of carbon dioxide from diesel engine and reduce the noise.
The 12MTX hybrid machinery, with a total weight of 9 tons, is a versatile, it can be used as excavators, loaders, material handling equipment, and by installing other tools it can rapidly realize other functions. This compact, flexible hybrid 12MTX machinery, which is produced by Mecalac Ahlmann Company, is a new innovative model, and it is fit for projects construction in urban centers which need operations within the limited space.
Cummins B3.3 engine, combined with diesel-electric hybrid system, improve fuel economy by optimizing the engine speed. With 68 horsepower (51 KW) mechanical output to meet the demands of the average power. When power demand is lower than 68 horsepower, the remaining power is used for the recharging battery pack; when power demand is higher than 68 horsepower, the generator can effectively replenish the gap of power, it can achieve maximum 99 horsepower (74 KW) of power output. Through a closed-loop electronic control system precisely regulate conversion of mechanical energy and electrical energy between diesel engine and electric motor.
Cummins B3.3 L engine can meet the fourth stage（Stage IIIA/ Tier 4 Interim） emission standard in Europe and America, emissions of particulate matter go down to 0.3 / g. KWH. B3.3 makes use of a clean-burning mode to control fuel injection and turbocharger, it can significantly enhance environmental standard of the hybrid excavator 12MTX.
B3.3 takes enhanced cast-iron cylinder body, deep and rigid crankcase, and stiffener design, it has long performance life and excellent durability.
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