KNOW WHY GASKET IS USED IN ENGINE !

You might have seen a rubber or strip like structure when you disassemble an engine.This rubber like structure is called gasket.We will know the importance of gaskets in engines in this article.

A head gasket is a mechanical seal that sits between the engine block and cylinder head(s) in an internal combustion engine.Modern vehicles are commonly manufactured with an engine block and a cylinder head bolted on top, which makes a head gasket a critical seal. This important component is situated between the engine block and cylinder head. It is a machined casting for an internal combustion engine, designed with cylindrical bored holes for hosting the pistons. A head gasket performs the task of a seal between the engine block and cylinder head.

The head gasket in modern vehicles is comprised of several layers of steel material entwined with elastomer, making them more durable and longer lasting. Vehicles produced in the past were equipped with gaskets created by graphite or asbestos. In comparison, today’s gaskets are better as they are less prone to leakage and have little to no health risks as opposed to asbestos produced gaskets.

The main functions of head gasket as as follows:

1.)The gasket joins irregular surfaces (we speak in terms of millimeter microns). For this reason, it is necessary to insert a softer material, such as a fiber or an elastomer between both surfaces which is able to adapt to those imperfections, which ensuring a perfect sealing.

2.)It maintains the sealing need and prevent leakage between the two crucial engine parts, when being subjected to the compression process.

3.)The gasket performs the task of separating the passage of oil and water that pass through the block and cylinder head of the engine.The head gasket keeps the chambers separated to ensure there is no cross-contamination of fluids.


4.)It prevents dust and dirt from getting into the engine and causing damage.

Various materials can be used in the manufacture of gasket: rubber, silicone, metal, cork, fiber or polymers.On certain occasions it may be found that the compression in the cylinder creates a perforation, or hole in the head gasket; generally known as a blown head gasket.

When the head gasket has blown, it’s critical that it be addressed immediately. Continuing to operate a vehicle with a blown gasket can cause serious and irreparable damage to the engine. When gasket is blown, you may notice a few or all of the following symptoms:


>Overheating – Caused by a lack of or reduced coolant. Also caused by hydrocarbons entering the cooling system.

>White, Blue, or Grey smoke – Indicates coolant or oil has entered the combustion chamber.

>Loss of Power – Due to a lack of compression resulting in sputtering, loss of power, and reduced fuel efficiency.

>Discolored Oil – A chocolate milk-looking oil is indicative of coolant mixing with oil in the engine.

So,next time when you face above problems, do not forget to check your gasket once.Thank you for reading this article.

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DIFFERENCE BETWEEN PIPE AND HOSE EXPLAINED !

Transportation of fluids uses different types of tubes, among which most commonly used tubes are hoses and pipes. They are efficient in transferring liquids from one point to the other.We will discuss the difference between hose and pipe in this article.

Pipe

A pipe is a hollow cylinder or tubular section, which is used in conveying substances that flow. They are typically utilized for structural applications, fabrication and railings. Tube and pipes can be interchangeable. However, when it comes to engineering and the industry, these terms have separate definitions. Pipes are usually put up for long-term purposes. The flow of the liquids is supported by tees and elbows.

Hose

A hose is a hollow-shaped tube created to transmit fluids from one point to the next. Hoses are built based on application and performance. They are usually designed based on their Pressure rating, weight, length, coil hose, straight hose and chemical compatibility. There are various types of hose based on their applications, such as garden hose, fire hose or air hose. They are usually used with spigots or clamps in order manage water flow.

Difference Between Hose and Pipe:

>A hose is a hollow-shaped tube created to transmit fluids from one area to the next.

>A pipe is a hollow cylinder or tubular section, which is used in conveying substances that flow.

>A hose is smaller than pipe.

>Hose is composed of a more flexible material compared to pipes that are composed of rigid tubes.

>Hoses are a combination of various materials from polyurethane, polyethylene, nylon and natural or synthetic fibers while pipes are made from fiberglass, metals, ceramic, plastic and concrete.

>A hose generally has a circular cross section while pipes may or may not have one. 

Thank you for reading the post. Feel free to comment down your views in comment section.

KNOW WHY PLASTIC COVER IS USED OVER ENGINES IN CAR !

There is one thing you will notice under the bonnet of a modern car that is use of plastics over engine. But why every single car has these plastic engine covers? Why do car manufacturers bother to spend extra time and money to make them?We will answer all these questions in this article.

Under the plastic cover we have fuel lines,spark plugs,fuel injectors,alternator and many other mechanical components.Plastic cover is used with engine to serve following purpose:

1.) A plastic engine cover hides wires and fuel lines, while making them still quite easily accessible. A nicely dressed engine bay typically means that some components can be hard to reach for repair. When you have a big piece of plastic hiding everything, you don’t have to worry about the looks – it is the cheapest way to keep the engine bay looking tidy. This is equivalent to cleaning the mess off of your desk straight into the drawer – out of sight, out of mind.

2.) It provides good insulation that gives a cooler surface that are safer for the general person to interact with. This also helps keep the bonnet cooler.

3.) Plastic engine covers can be heat-resistant and absorb vibrations, making the sound of the engine just that little bit quieter. 

4.) Cover keeps fluids below the cover. In a car with high speeds, usually more oil splatter and coolant being thrown around, up on the hood, etc. If you take cover off, you would find some oil, grease and/or dried coolant under it.

5.)Plastics are easily manufactured to cover the complex engine shape, light weight and are inexpensive. 

So,these are the reasons for the use of plastic cover over engine. It is likely that in the future, engines are going to be tucked away even more and not accessible without specialized equipment.

KNOW WHY MAN DECORATED HIS JAGUAR S-TYPE WITH 4,600 COLOURFUL TOY CARS !!

Malaysian businessman named Datuk Seri Mahadi Badrul Zaman, the CEO of Financial Genius Team, has been turning heads with his unique ride all around Kuala Lumpur.The businessman, who is an avid Hot Wheels toy collector, decorated his prized Jaguar S-Type with 4,600 colorful toy cars from his collection.

Reports of an unusual-looking Jaguar S-Type limousine covered in thousands of miniature cars driving around the Malaysian capital had been circulating on social media for a few weeks, but no one knew anything about it, who the owner was or if it was just some sort of marketing stunt.

The owner stats the reason behind this that he has been a Hot Wheels car enthusiast since he was 13, and now is the proud owner of around 5,000 vehicles, 4,600 of which are as an attachment stick with glue to his car. 

It definitely looks different, but I’m guessing the maintenance for such a “paint job” has got to be a nightmare. You can’t park it anywhere for fear that someone’s going to yank a toy car off the car, and cleaning it can’t be very easy either. But if you’re an attention seeker, this is definitely an eyeball magnet.

KNOW WHAT NOT TO DO IN CASE OF A SNAKE BITE !!

Getting bitten by a venomous snake can be very scary, and can lead people to react in exactly the wrong way: Maybe they panic, try to catch or kill the snake, or apply ice or a tourniquet to the wound, which can be disastrous in certain situations.

So, what should we do in case we are bitten by a snake? In this article we will discuss what to do and what NOT to do in case a person is bitten by snake.

All snake bites require medical attention, even if the snake is nonvenomous. Proper wound care can help prevent infection and limit how severe the injury becomes.It is vital never to assume that a snake is nonvenomous without first consulting an expert. The mis classification of snake species could be fatal.

SYMPTOMS FOR SNAKE BITE:

Usually, people know right away if a snake has bitten them. However, these animals can strike quickly and disappear before people have time to react.

Most snake bites can cause pain and swelling around the bite. Those that are venomous may also cause fever, a headache, convulsions, and numbness. However, these symptoms can also occur due to intense fear following the bite.

WHAT TO DO:

• Get to an emergency room as soon as possible. Even if the bite isn't poisonous, you’re at risk of tetanus, a serious bacterial infection, if your shot isn't up to date.
• Move the limb where the bite happened as little as possible. This will help slow the spread of the venom.
• Take note of the snake’s appearance. Your description will help the doctor identify what bit you. (Your location will also be a clue.)
• Note the time the bite happened so the doctor knows how much time has passed.
• Remove any jewelry around the area of the bite before swelling begins.
• Use Tylenol for pain, if needed.

  WHAT NOT TO DO:

• Do not pick up the snake or try to wrap it up or kill it, as this will increase the chance of getting another bite. Even a dead snake is able to bite.
• Do not apply a tourniquet.
• Do not cut across the site of the bite marks.
• Do not try to suck out the venom.
• Do not apply ice.
• Do not immerse the wounded area in water.
• Do not drink beverages with caffeine.

In most cases, it is necessary to remain in the hospital for up to 24 hours in order to monitor blood pressure and overall health.

KNOW WHY THERE IS BULGE IN EXHAUST PIPE OF DIRT BIKE !

Dirt bike engine uses two stroke gasoline engine.The exhaust pipes of dirt bikes are shaped strange. They expand into a wide diameter and then shrink down to a very small diameter where the exhaust gasses emerge into the environment.In this article we will understand why these exhaust pipes are shaped in that manner.

That bulge is called an expansion chamber, and it is used to increase the horsepower of the engine . This technique only works on two-stroke engines, which is why you see it on a lot of dirt bikes but not on street bikes. Most street bikes use four-stroke engines.

The basic idea behind an expansion chamber is to use the momentum and pressure of the exhaust gases to create a pump that squeezes more air and fuel into the cylinder during the intake stroke. It does the same sort of thing that a turbocharger does, but it does it without moving parts.

How it works:

While moving downwards after ignition, the piston exposes the exhaust opening, and the burned gas streams into the exhaust pipe like a (high pressure) shock wave.

Due to the inertia, this gas will create a slight vacuum wave behind it, which helps to suck out more burned gas, but also fresh gas as soon as the intake opening is uncovered. 

The first cone helps to increase the vacuum: When the gas travels through the pipe with a certain speed, it travels through a certain volume per time. If the cross section is increased and the speed remains the same, the wave travels through a larger volume. This creates more vacuum volume behind the wave.

Now we have fresh gas in the cylinder, but also in the manifold. The shock wave now hits the right cone and gets reflected.That is, you now have a shock wave running towards the cylinder. It hits the fresh gas right in the moment when the intake opening is covered by the piston, and presses this gas into the cylinder. When the piston covers the exhaust opening, too, the fresh gas already is under some pressure.

This way, the exhaust forms some kind of compressor, increasing the volumetric efficiency / power of the motor.

KNOW WHY MANHOLES ARE ROUND IN SHAPE !!

You might have noticed that most manholes, and their covers, are round in shape.We will discuss the reason behind the round shape of manhole cover in this article.

1.Mishandling the Manhole cover-A round manhole cover cannot fall through its circular opening, whereas a square manhole cover could fall in if it were inserted diagonally in the hole.

2. Rolling the Manhole Cover -A round manhole cover is easily moved and rolled.

3. Strongest shape-When a square or rectangular manhole cover is subjected to sudden vertical compression (think of a very heavy truck driving over it), the weakest spot, the center, isn't equidistant to all supporting sides, especially the corners, which give support from two directions and are thus the strongest points (for similar reasons, experts recommend you stand in the corner of a room during an earthquake). With a circular cover, the center is equidistant from all supporting sides, and due to the gradual curve, any point along the edge gives almost as much support as a corner on a square cover. Circular shape results in uniform stress distribution.

4. Circular covers don’t need to be rotated or precisely aligned when placing them on the opening.

5. Round tubes are the strongest shape against the compression of the earth around them, so the cover of the tube would naturally be round as well.

6. It’s easier to dig a circular hole.