The Keel of a boat

03/18/2014

 
Picture
Structural Keels

A structural keel is a beam around which the  hull of a ship is built. The keel runs in the middle of the ship, from the bow (FRONT) to the stern (REAR), and serves as a basic foundation or spine of the structure, providing the major source of structural strength of the hull. 

The keel is generally the first part of a ship's hull to be constructed. The picture illustrates a sail boat keel. This type of keel will give more stability in the water which, is also refers to the vessels drought, or also called draft. 

Modern ships are now largely built in a series of pre-fabricated, complete hull sections rather than being built around a single keel. 

If a ship suffers severe structural stress that usually would happen during a ship wreck when running aground, it is possible for the keel to break or be strained to the extent that it loses structural integrity.  In this case the ship is commonly said to have broken its back. This type of damage / failure means that the entire structure of the ship and its machinery has been compromised and repairing such damage would require generally require re-building the ship from the ground up. A ship that has broken its back is almost certainly is usually found 
not salvageable and subsequently written off by its insurers.



 
 
Picture
Basic Overview

The simple explanation is that EcoBoost is a combination of turbocharging, and direct fuel injection that improves fuel economy without sacrificing vital engine power. 

Turbocharging component

First off all of the Ford EcoBoost engines are turbocharged. Turbocharged engines use a device that forces in more air than a normal engine would receive. More air and more fuel makes an engine more powerful.

The device that forces this air into an engine is a turbocharger and some use the word "boost" to describe the process of turbocharging. That's where Ford gets the boost in EcoBoost. More important, turbocharging adds power without substantially decreasing your gas mileage. That's different from simply enlarging an engine, which requires more fuel and hurts your gas mileage.

Direct Injection component

The second part of Ford's EcoBoost engine is gasoline direct injection, or simply direct injection. Direct injection is one form of fuel injection, which is the process used to send fuel into an engine. While typical fuel injection uses an extra step known as the intake tract to inject fuel, direct injection cuts out that process entirely. The result is a less complicated fuel injection process, which improves efficiency.

So now what? Should you consider it?

So, is EcoBoost worth considering? It depends on your situation. Nearly all Ford models now offer an EcoBoost variant, but some only offer the system at the very top end of their model line. The Ford F-150, for example, uses EcoBoost to replace its top-shelf V8 model, though standard V6 versions retain the more traditional technology.

Regardless of whether EcoBoost is at the top or bottom of a model lineup, experts think the technology is sound. It adds power and lifts acceleration without many disadvantages to gas mileage. And it brings shoppers the exciting power delivery of a turbocharged engine. Still, we recommend you try it out, like any new technology, to see if it's for you.


 
 
Picture
You Can Do It

Thanks to The Family Handyman a Free E-Book about basic plumbing repairs.

Just click http://hostedmedia.reimanpub.com/TFH/Newsletters/give-away/easy-plumbing-repairs.pdf on the link. 

 
 
Picture
Does your engine have carbon buildup

Back in the days of carburetor-equipped engines and leaded gasoline, a proper engine tune-up included the use of a top engine cleaner to remove the carbon deposits that built up on the intake valves and in the combustion chambers of the engine. Today’s modern fuel-injected engines may go a lot longer between scheduled tune-ups than a vintage carburetor-equipped engine, but engine decarbonization should still be part of your scheduled vehicle maintenance program. That’s because the gasoline the engine uses to make power during the combustion process is still causing power-robbing deposits to build up in your engine.

The air flow from the PCV (positive crankcase ventilation) system and EGR (exhaust gas recirculation) valves will also cause fuel- and carbon-related deposits to build up on the intake valves, which will restrict the airflow into the engine’s cylinders and cause the engine performance to diminish. The combustion process will also cause carbon deposits to build up in the combustion chamber that will negatively affect the combustion process and increase the engine’s need for higher-octane gasoline.

The carbon deposits that form on the top of the piston and in the combustion chamber will increase an engine’s need for high-octane gasoline because the deposits will artificially increase the heat in the engine’s combustion chamber. The carbon deposits that form on the intake valves both restrict the flow of the air/fuel mixture into the cylinders and negatively effect fuel vaporization. If the fuel is not fully vaporized and properly mixed with the air in the engine’s cylinders during the combustion process, part of this fuel may go out of the cylinders as unburned hydrocarbons. These unburned hydrocarbons can cause an engine to fail a smog check because the unburned hydrocarbon (HC) content in the exhaust may exceed the emission test standards. These carbon deposits can also cause cold start and driveability problems as the engine warms up because they can actually act as a sponge by momentarily absorbing some of the fuel that is need for proper combustion.