What is a
cam less engine ?
In this
engine, the camshaft functions are
replaced by an electronically controlled set of actuators. These actuators
control the starting air valves. Start and reversing sequences. Governor
function, auxiliary blowers, electronically profiled injection (EPIC) and
exhaust valve actuation. This is done with great precision than camshaft
controlled engines.
The
exhaust valve, as on MC engines, are opened hydraulically and closed by an air
spring. The actuator is hydraulically driven by pressurised control oil via an
on/off type valve. The starting air distributor has now been replaced by
electronically controlled on . Off valve which in conjunction with the ECU and
the CCU. Control the starting air valves. The hydraulic power is provided by
the hydraulic power supply units placed at the aft end of the engine.
The cam
less system, being electronically controlled is fully integrated with other MAN
B&W diesel developments such as more efficient fuel and lube oil injection
and the COCOS engine diagnostic platform.
This
control makes the overall of each system even more effective and reliable. The
ECS can folly control and optimize the combustion process at any load by
electronically controlling the valves according to the crankshaft position
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