Mechanical Engineering

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A device for dividing the flow into the valve between two outlets. The spool is pressure balanced by the flow across it. When a greater pressure drop occurse at one of the ports the spool moves across to counteract this and divert more flow to one side. They are not perfectly accurate.

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EN 52 steel is generally used in engine valves (Withstand high temperature)

5Cr9Si3

PROBLEM Karen does not have enough apples for her mom to make aple pie. SOLUTION Tommy gives Karen apples from his dad's grocery store.

http://en.wikipedia.org/wiki/IC_engine , Checkout the above link to find out all about Ic engines.

Parachute-aided braking

One of the most common is the bus or heavy goods vehicle - fitted with air brakes. Similarly the brakes on trains. However there is a huge range of industrial tools, machines and control systems powered by compressed-air.

The Air flow meter/sensor measures the volume of air entering the engine. It normally also incorporates an air temperature sensor. If it does not there is usually one fitted somewhere else.

Knowing the volume of air, and it's temperature, enable the fuel injection system to avoid "over fuelling" the engine, as this is not only is a waste of (Very expense) fuel, but also gives rise to excessive levels of pollutants in the exhaust gasses.

It also enables the system to accurately judge when to inject the fuel to get maximum fuel economy.

If you have ever seen a diesel fuelled vehicle giving off clouds of smelly black fumes, this is what the system is trying to avoid.

Make the returned echoes easier to distinguish from Noise, Make target tracking easier with conical scanning, and it have no effect of the range resolution

A wedge

There are a couple possibilities for foam in a gearbox. Gear oil is created with an anti-foaming additive in it, so if the fluid starts to break down because of normal wear, then it will start to foam. The solution is easy. Just change the fluid. The second option is that it got water in it, and the water will cause a foam. Also, just change the fluid.

A feature control frame describes a geometric tolerance on an engineering drawing. Geometric dimensioning and tolerancing is defined by the ASME Y14.5-2009 standard. A feature control frame is basically a rectangle divided into several segments, in the following order:

1 - A geometric characteristic symbol (specifying what the tolerance type is, such as parallelism, position, surface profile, runout, etc.)

2 - The tolerance

3 - Up to three frames (if applicable) of the datums to which the tolerance is related to. Some tolerances (such as flatness) do not relate back to any datums.

For more information:

http://catalog.asme.org/Codes/PDF/Y145_2009_Dimensioning.cfm

http://en.wikipedia.org/wiki/Geometric_dimensioning_and_tolerancing

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i believe its just a cardboard tube

Certainly not. Once you've been doing isometric drawings for a while, the right technique will become second nature without having to use arrows as your guide. Isometric dot paper is also useful for this.

A four stroke internal combustion engine can have any number of pistons, from one to one million. They usually have even numbers in order to maintain engine stability.

The "four stroke internal combustion" signifies the type of engine. There are two stroke internal combustion engines, mostly one or two cylinder engines used in lawn mowers. An internal combustion engine is one that ignites an air fuel mixture within itself and uses the resulting explosion for power. There are external combustion engines, which are usually powered by steam heated in a separate container and pumped into the engine.

Four stoke engine utilize a four step (or stroke) process in order to run. The steps are the intake stroke, where the engine breaths in air and fuel, the compression stroke, where it squeezes the air and fuel, the power stroke, where it ignites the air fuel mixture, and finally the exhaust stroke, where it pushes the remains of the ignition out. See the attached link for a graphic description of how two and four stoke engines work.

Its the jism jasum of the cremonial spism. Designed for massaging your forward facing hamhocks

Obtuse

Margin pressure is a term used in Closed Center, Load Sense type systems in hydraulics. The term refers to the pressure difference between the pump outlet(valve inlet) and the valve tank pressure). The margin pressure is the way the valve signal to the pump it's status.

#2 fuel oil = 140,000 btu/gallon. Psi does not matter.

No. Damascus steel is made by forging multiple layers of thin steel. The process involves a lot of heat and pressure, and the result is like a single piece of steel of high strength. The properties are generally better than what can be had by bonding multiple layers together in a lamination.

The superior strengh of damascus steel is produced by two layers of steel with different properties and forging them together, once this is done forging is continued by folding the two steels over and forging them again. This is continued until the layers produced give it the qualities required.

Fold two pieces of paper you get 4 layers

fold 4 gives 8 fold agin 16 fold again 32 etc. This is possible with steel because of the forgig but couldn't be done with paper, try it.

helps us build buildings faster and stronger