Marine turbochargers : Marine engines require a turbocharger because it recycles exhaust gases to improve efficiency. It is made up of two parts: the blower and the turbine, both of which require equal attention during routine maintenance.
Need of turbocharger in marine engine:
An adequate supply of air in a marine diesel engine, results in fine combustion. By increasing the density of air entering the engine, the total output power of the entire engine can be dramatically increased. This is accomplished with the help of a device known as a turbocharger, and we will look at how turbochargers work in this article.
Air is sucked into an engine without a turbocharger, such as naturally aspirated automobile engines, by a low pressure area created by the piston's downward stroke. However, this system relies on a constant air inlet pressure that cannot be changed and is insufficient for complete combustion.
Function of Marine Turbocharger:
For this reason, turbochargers are used to increase the engine's air density. As a result, a turbocharger is a forced-induction mechanism for marine diesel engines As a result of this forced-induction system, a large amount of fuel can be introduced into the engine. The engines' power-to-weight ratio improves as a result of this.
As part of a watch, a marine engineer would be responsible for monitoring the performance of the turbochargers and performing maintenance.
How Does a Turbocharger Work?
Two main engine parts make up a turbocharger: the turbine and the compressor There are two main components to a turbine, which are the turbine wheel As the exhaust gas enters the turbine wheel, the turbine housing's job is to direct it The turbine wheel is spun by the exhaust gas, which then exits the turbine housing through an exhaust outlet.
There are two parts to the compressor as well: the compressor wheel and the compressor casing. Unlike the turbine, the compressor works in the opposite direction. In order to compress air, a high-velocity compressor wheel is attached to a turbine by a forged steel shaft. As the turbine turns the compressor wheel, the high-velocity This low-pressure high-velocity air stream is then transformed into a high-pressure, low velocity high-velocity air stream by a process called diffusion. As a result of the compressed air entering the engine, the engine can burn more fuel, resulting in more power.
Use of turbocharger:
Heavy machinery such as locomotives, ships, and auxiliary power generation use turbocharging as well as diesel engines in cars, trucks, tractors and boats.
In non-turbocharged diesel engines, performance characteristics such as specific power and power-to-weight ratio can be dramatically improved by turbocharging.
Unlike internal combustion engines, diesel engines don't have detonation because diesel fuel is injected at the end of or just before a compression stroke, and is ignited solely by A diesel engine's maximum boost pressure is limited only by the engine's ability to withstand additional heat and pressure as a result of this fact.
Application of turbocharger:
Also, some two-stroke diesel engines use turbochargers instead of a Roots blower for aspiration. Specifically, the turbocharger is driven by the crankshaft & cylinder block of Electro-Motive Diesel (EMD) 567, 645, and 710 Series engines through a gear train and an overrunning clutch, providing aspiration for combustion.
The overrunning clutch is automatically disengaged once combustion has been achieved and the exhaust gases have reached a sufficient heat energy level. The turbo-compressor is then powered solely by the exhaust gases.
For starting and low power output settings, the turbocharger acts as a compressor for normal aspiration, and for medium and high power output settings, it acts as a true turbocharger. This is especially useful at high altitudes, such as those found on the western U.S. railroads' tracks While a large increase in engine power is being requested, it is possible for the turbocharger to briefly switch to compressor mode.
Features of turbocharger:
In order to increase the intake air pressure of an internal combustion engine, a turbocharger is made up of a compressor wheel and an exhaust gas turbine wheel that are connected by a solid shaft Using the exhaust gas turbine's energy to drive the compressor and overcome friction, it converts the exhaust gas into Radial flow compressors and turbine wheels are commonly used in automotive applications, with the latter being the most common. As an alternative to radial flow turbines, an axial flow turbine wheel can be used in certain applications, such as medium- and low-speed diesel engines For example, a typical turbocharger would have an air compressor that uses radial flow, and turbine wheels
Best brands of turbocharger:
HKS GT II 7460.
Garrett GTX2860R and GTX3067R.
Turbonetics GT-K.
Godspeed Upgrade turbo.
Maintenance of turbochargers:
Turbochargers are inspected and overhauled on a regular basis as part of the ship' There are a number of things that need to be done such as checking the oil level in the sump, cleaning the air inlet filters and inspecting or replacing the bearing based on the number Water is also washed off of each side after every inspection.
It's possible that dust and oil sucked from the engine room will get stuck to the impeller blades, reducing its
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