Since 1994, German engine builder MTU Friedrichshafen and its wholly owned subsidiary L'Orange, have been collaborating closely on the development of a common rail fuel injection system, In 1997, MTU launched its series 4000, 8-, 12-, 16- and 20-cylinder vee-configuration diesels (4.06 or 4.49 L/cyl bore 165 x stroke 190 or 210 mm), the first of its production diesel engines to be fitted with electronically controlled common rail fuel injection.
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机译：自1994年以来，德国发动机制造商MTU Friedrichshafen及其全资子公司L'Orange一直密切合作开发共轨燃油喷射系统。1997年，MTU推出了4000、8、12、16和20缸V型柴油（4.06或4.49 L /缸径165 x行程190或210 mm），这是其首款生产的柴油发动机，装有电子控制的共轨燃油喷射。
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