MARINESHELF publishes articles contributed by seafarers and other marine related sites solely for the benefit of seafarers .All copyright materials are owned by its respective authors or publishers. Lubricating oil sumps are situated immediately underneath the roller bearing and are separate for the roller bearing and are separate for the turbine and compressor ends. Oil pumps are mounted at each end and driven by the shaft, spray oil on to their respective bearings (see sketch above). This enclosed system is self-contained and independent. The lubricating system for a turbocharger with plain bearings can be taken from the main engine system or it can be independent. When the main engine system is used, adequate filtration and safe- guards against interruption of supply must be provided. For an independent lubricating system a drain tank is required, together with duplicate sets of lubricating oil pumps, a cooler, header tank, alarms, filter, shut-off valves, etc. The pressure gravity system is generally used in merchant vessels where height is not restricted. It utilises an overhead tank about 5 meters above the turbochargers. The head from the gravity tank is sufficient to produce a continuous supply of oil to the turbocharger bearings and the capacity should be such that the bearings will not be damaged, should both lubricating oil pumps break down. The alarm in the gravity tank will alert the engineers on watch to slow down or stop the main engine whilst an investigation takes place. The lubricating oil pump draws oil from the drain tank via the suction strainers and delivers the warm oil through fine-mesh filters to the oil coolers and then to the turbochargers and gravity tank. See the figure below. The gravity tanks should have a capacity, which will permit the turbochargers to run for approximately 15 minutes. This reserve flow is extremely important to avoid damage to the bearings. Another benefit is that the gravity system can be isolated and the pressure system used for flushing. Contamination of the lubricating oil reduces the effective life of the bearings considerably and, when changing oil or replacing bearings, extreme cleanliness must be observed.
MARINESHELF publishes articles contributed by seafarers and other marine related sites solely for the benefit of seafarers .All copyright materials are owned by its respective authors or publishers. Lubricating oil sumps are situated immediately underneath the roller bearing and are separate for the roller bearing and are separate for the turbine and compressor ends. Oil pumps are mounted at each end and driven by the shaft, spray oil on to their respective bearings (see sketch above). This enclosed system is self-contained and independent. The lubricating system for a turbocharger with plain bearings can be taken from the main engine system or it can be independent. When the main engine system is used, adequate filtration and safe- guards against interruption of supply must be provided. For an independent lubricating system a drain tank is required, together with duplicate sets of lubricating oil pumps, a cooler, header tank, alarms, filter, shut-off valves, etc. The pressure gravity system is generally used in merchant vessels where height is not restricted. It utilises an overhead tank about 5 meters above the turbochargers. The head from the gravity tank is sufficient to produce a continuous supply of oil to the turbocharger bearings and the capacity should be such that the bearings will not be damaged, should both lubricating oil pumps break down. The alarm in the gravity tank will alert the engineers on watch to slow down or stop the main engine whilst an investigation takes place. The lubricating oil pump draws oil from the drain tank via the suction strainers and delivers the warm oil through fine-mesh filters to the oil coolers and then to the turbochargers and gravity tank. See the figure below. The gravity tanks should have a capacity, which will permit the turbochargers to run for approximately 15 minutes. This reserve flow is extremely important to avoid damage to the bearings. Another benefit is that the gravity system can be isolated and the pressure system used for flushing. Contamination of the lubricating oil reduces the effective life of the bearings considerably and, when changing oil or replacing bearings, extreme cleanliness must be observed.
Rolls-Royce’s Trent XWB engine, fitted to the new Airbus A350, is claimed to be the most efficient aero power unit yet designed.
En 1963, Max Dreher a commencé la conception du turboréacteur TJD 76C Baby Mamba.
The best place to start, is to establish just what a microturbine is and isn’t. The prefix in the word is a giveaway, but just how small is a micro gas turbine?
Aerospace Compressor Arc Rare Earth Sm2Co17 Magnets, steam or gas turbine Samarium Rare Earth Segment Magnets, High Work Temp Turbomachinery
Mengenal Engine CFM56 – 7B Saudara tentu pernah mendengar atau mengenal jenis engine CFM56 – 7B yang digunakan pesawat BOEING 737N...
I will study the characteristics of a turbocharger designed for a small high performance vehicle with the SOLIDWORKS Flow Simulation CFD tool.
ENGINE TYPES and APPLICATIONS Introduction Most of modern passenger and military aircraft are powered by gas turbine engines, which are also called jet engines. There are several types of jet engin…
gas-turbine engine, any internal-combustion engine employing a gas as the working fluid used to turn a turbine. The term also is conventionally used to describe a complete internal-combustion engine consisting of at least a compressor, a combustion chamber, and a turbine. Useful work or propulsive thrust can be obtained from a gas-turbine engine. It may drive a generator, pump, or propeller or, in the case of a pure jet aircraft engine, develop thrust by accelerating the turbine exhaust flow through a nozzle. Large amounts of power can be produced by such an engine that, for the same output, is much
As I wrote about a few months back, the prototype FrankenTurbo F21 with a mixed flow turbine wheel (referred to as F21MF hereafter) is an update to a product that was already on my candidate list. …
ремонт турбокомпрессора или турбины своими руками, принцип работы, причины неисправностей и малоизвестные нюансы Статья
