EXPERIMENTAL TRIAL OF VIT SYSTEM OF THE LOW-SPEED DIESEL MAN 6L80MCE
The analysis of work of mechanical VIT system (Variable Injection Timing) of the marine low-speed diesels MAN B&W of MC series is given. Features of VIT are given. By the example of the ship low-speed main diesel 6L80MCE influence of VIT on the diesel working process is shown. The general signs of late fuel injection in the cylinder are shown. It is shown that the work of VIT system, provided by the MAN Diesel & Turbo SE developers, is necessary for high-quality and economic operation of the diesel. During the regular work of VIT daily fuel consumption of the main diesel 6L80MCE can be reduced at the expense of fuel feed phases correction. Besides, the average temperature of exhaust gases that leads to reduction of the general level of thermal stress and increase in motor potential of the engine thus decreases.