22-05-2012, 11:31 AM
Common Rail Retrofit Improves Consumption
070402- Common Rail Retrofit.pdf (Size: 52.45 KB / Downloads: 39)
As a further development of a well-proven engine
originally designed with conventional FIE, common rail
technology can also be retrofitted to 32/40 engines
already in the field. Indeed, in anticipation of the
expansion of common rail technology in its four stroke,
medium-speed engine range, retrofit capability was a
major product objective in the design of the MAN Diesel
common rail system and is reflected in many of its
features. For example, the high pressure pumps of the
MAN Diesel common rail system are installed in the
same bores used for the conventional unit pumps in a
conventional injection system, the pressure accumulators
(common rails) are segmented so as to make best use of
available space on the engine between the injection
pumps and the injectors, and the injectors themselves
are standard, pressure controlled units controlled by
magnetic valves mounted at the accumulator outlets.
Captions:
1. The MAN Diesel 32/40 CR engine following
retrofitting of common rail fuel injection and the
associated electronic management system.
Clearly visible are the segmented pressure
accumulators.
2. MAN Diesel designed it common rail fuel injection
system with retrofit capability. Features include
installation of high pressure common rail pumps in
the same bores used for conventional unit
pumps, segmented pressure accumulators to
make best use of available space and standard,
injectors pressure controlled by magnetic valves
on the accumulators.
3. Schematic of the MAN Diesel PrimeServ Online
engine monitoring and system.
About MAN Diesel
MAN Diesel is the world’s leading provider of large-bore diesel
engines for marine and power plant applications. The company
develops two-stroke and four-stroke engines, auxiliary engines,
turbochargers and propulsion packages that are manufactured
both by the MAN Diesel Group and its licensees and deliver
between 450 kW and 97.3 MW of power. MAN Diesel employs
over 6,400 staff, primarily in Germany, Denmark, France, the UK,
the Czech Republic and China. The global after-sales
organisation, MAN Diesel PrimeServ, comprises a network of the
company’s own service centres and authorised partners. MAN
Diesel is a company of MAN AG, which is listed on the DAX
share index of the 30 leading companies in Germany.