Machine Parts

Valve thermal conductivity, corrosion resistance is high. When air-fuel mixture gas is burn in cylinder, it’s temperature is   increased. Valve material should be use high thermal resistance which is not under the wrap influence the heat. Otherwise it will be leaked. Valve head and valve seat material should be hardness with high temperature. Without it   can nod work accurately.   In valve mechanism also should be used lubrication. Because rapidly open and close valve there have no corrosion. If any one want to good working efficiency   they must be used speedy   by using lubrication. If do not use lubrication, or small amount use which is not enough stems do not work. In outlet valve where gas burning much. And exhaust gas speed is up to three hundred fps.   It create corrosion by air-fuel mixture. When working temperature is maximum that’s time valve may be broken or destroyed much which is short distance. It is generally occu...

A Poppet valve up and down in a fixed distance which is predetermined. For it’s up and down mechanism it is called mushroom valve. Poppet valve size also looks as like as mushroom. A Poppet valve contain two main parts one is Head and another is Stem. One can construct his or her automobile engine by various way such as construction of sealing efficiency which is more easier than any other construction, self centering, the stem to rotate which is more freely and construction is easily. Inlet and Outlet Valve:   Exhaust valve is smaller than inlet valve. Because inlet valve receive mixture of air-fuel which contain high pressure and it is released in exhaust valve where some energy lost . Outer gas volume is less than inner gas volume. Someone use larger exhausted valve, but smaller exhaust gas is more prefer by people because it contain a small   loading place which is fully load of thermal loading. Valve Diameter distance:   Most o...

Now scientist use solar cell in smart phone. By using glass on smart phone screen now used solar energy.   A researcher team of University of California recently invent solar energy used in smart phone. By this way one smart phone user no need charge his/her smart phone. In this technology Smart phone screen work as a solar cell. This types of device is thin and it contain two polymer solar cell.   Two polymer solar cell collect heat from sun. After collecting heat energy from sunlight and then it is convert into electric energy. This solar energy people can used their house windows, car windows and smart phone. Initially researcher team work with only one solar cell, now they invent new device where they can collect 80   % energy from sun. In former way a device can collect only 40% solar energy and it take loss about 40 %. Now more popular is monocrystalline solar charger, cell and silicon water which looks small and it creates good feedback....

Generally camshaft control valve when it is closed or open. There are two types of engine more used valve mechanism such as 4 stroke cycle engine and 2 stroke cycle engine.   Valve should be open and closed time to time which is more preferable and helpful by control camshaft. There are three types of valves one is Rotary valve, Poppet Valve   and another is sleeve valves.  Valve and Valve Mechanism: For exhaust gas which is residue and input of cylinder air fuel mixture which should be provide time to time, all of this input and output from a cylinder or a system controlled by valves. Among of the three valves types Poppet valves is more popular and used worldwide universal automobile engine.         Poppet valve mainly contain a circular disc which is up and down with a spring. When valves open spring must be applied external force. But now scientist is more developed their technology and proce...

At closer inspection, the silver semicircle at the back of the room contains a microphone rig rather than a wormhole leading to other planets, and the instrument pointing at it is an enormously high-pressured air jet, not a teleporter. Computers in the adjoining office can create 3D soundscapes of the noise recorded inside the chamber. The £500,000 facility is one of a suite of testing labs built at the university's Institute of Sound and Vibration Research (ISVR) in an effort to create quieter aircraft. It was created when Rolls-Royce asked the team to explore a potential noise issue regarding one specific valve on a particular turbo fan engine, explains Prof Jeremy Astley, director of the ISVR. The valve's job was to blast extremely hot air out of the the engine. "In previous engines there were other noise sources so we hadn't noticed this one," he said. "In noise control when you bring ...