e) Speed Regulation
The governor shall be electronic capable of regulating the speed of the engine within the
limits approximately 10% of the rated speed within 4 seconds due to a sudden application
or removal of a full load. The steady load speed shall vary within the limits of
approximately 1% of the rated speed.
f) Cooling
The engine cooling system shall be of a closed circuit water re-circulating system to cool
the engine as well as the body to minimise heat radiated into the generator room. The
cooling circuit will exchange heat through a heat exchanger capable to remove the heat
generated under continuous full load operation.
g) Lubricator
1. The lubricating system shall be by a positive displacement oil pump providing a positive
force feed to all lubricating points.
2. Good quality lubricating oil filters with replacement elements shall be provided.
h) Exhaust System
1. Adequate sized piping and fittings shall be installed to carry the engine exhaust discharge
into the atmosphere as indicated in the drawings.
2. Mufflers shall be installed to reduce the engine exhaust noise to a maximum of 5 dBA
above ambient noise level at nearest area accessible to the public within 3m from
Generator Room and at least 2m above floor level. Flexible connection shall be provided
between the engine and the fixed piping. All fittings shall be wrapped in an approved
calcium silicate heat insulation material of 40mm thick and shall be rigidly bonded and
supported