Dieseldriven Generators

jacket-water circulating pumps A diesel engine that drives a generator is often furnished with an attached centrifugal-type jacket-water circulating pump that circulates freshwater through passages in the engine's cylinders and cylinder heads, the engine's tur-bocharger, and the engine's lubricating-oil cooler. In addition, the jacket-water system may include a preheater that is used to warm-up the water prior to engine start-up. When the jacket water is air cooled, it will also pass through a radiator. Alternatively, the jacket water may be cooled by seawater or freshwater in a heat exchanger. When seawater is used as the cooling medium in a jacket-water cooler, the seawater may be circulated by a centrifugal pump that is attached to and driven by the diesel engine or by a separate electric-motor-driven centrifugal pump.

fuel-oil pumps A diesel engine that drives a generator frequently has an attached rotary gear-type fuel-oil (FO) pump that is mounted on and driven by the engine. The pump typically takes suction from a daily service tank and delivers fuel oil to the engine's injector pumps. Excess oil delivered to the engine is ordinarily returned through a recirculation line to the service tank. A filter is typically included in the system. A separate hand-operated FO pump that can be used to prime the engine-driven FO pump (for example, following maintenance performed on the FO system, such as filter replacement) may also be provided. A diesel engine's FO supply line is often fitted with a valve that can be closed from outside the machinery space to stop the engine in case of a fire or other emergency.

LUBRICATING-OIL PUMPS A diesel engine that drives a generator is usually fitted with an attached rotary gear-type lubricating-oil (LO) pump that is mounted on and driven by the engine. The pump typically takes suction from a sump located below the engine and discharges oil to the engine's bearings. A filter and cooler are also ordinarily included in an engine's LO system. In addition, a hand-operated or air-motor-driven rotary-type LO pump is often provided to permit the engine's bearings to be prelubricated prior to startup. A diesel engine that drives a generator is often protected by a trip that stops the engine if the pressure in the LO system drops below a preset value.

Renewable Energy Eco Friendly

Renewable Energy Eco Friendly

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable.

Get My Free Ebook


Post a comment