Education is to cultivate a new generation of ready to engage in the social life of the whole process, also is the human society production experience of inheriting the key link to develop, mainly refers to the process of pairs of school-age children, youth, youth culture. Broadly speaking, that improve people’s knowledge and skills,
Overhead valve, ohv. The camshaft in the cylinder side, when the gear is driven directly by. Due to this arrangement must use the valve tappet to transfer power, reciprocating parts more, inertial mass, easy to cause vibration, so it has basically does not use this layout.Today the more common of the two type is: overhead valve, overhead camshaft ( SOHC ) and overhead valve, DOHC ( DOHC ). Read the rest of this entry »
Overhead camshaft classification:According to the cam shaft number, generally can be divided into single overhead camshaft ( SOHC ) and double overhead camshaft ( DOHC ) two common, and of course the production process more complex four overhead camshaft.Single overhead camshaft ( SOHC ) is the Single Overhead Camshaft. Read the rest of this entry »
OHV and OHC :Engine camshaft installation position is lower, middle, top three forms. Car engine rpm is due to more than 5000, to ensure that the exhaust efficiency, have adopted the intake and exhaust door hanging form, namely the overhead valve device.The modern car engine camshaft engine configuration in above, compared to lower,
The camshaft is a component in the piston engine. Its role is to control the valve opening and closing action. It is generally made of cast iron, and occasionally by forging. Cam shaft main body is a cylinder group is the same as the length of cylindrical rod body. Above the sleeve has a plurality of cam, used to drive the valve. Camshaft end bearing supporting point, and the other end of the driving wheel is connected.
In general, the same displacement of more cases, valve, exhaust efficiency is better, like a man running, tired and pant for breath, need big mouth breathing. Large displacement, large power engine to use multi-valve technology.Cylinder and valve number can be used as the criterion of judging the engine, but it is not the only standard.
Torque is the engine performance is an important parameter, is refers to when the engine is running from the end of crankshaft output average torque, commonly known as the” engine to jin”.
The maximum power is also called the maximum horsepower, the unit of power is kilowatt ( kw ), horsepower unit is a ( PS, =1.36) of 1 kilowatts.Output power and engine speed is important, as the speed increases, the engine power is also a corresponding increase in. To a certain speed, power will not increase, and may decline.
The piston from TDC to BDC the sweep gas volume, also known as the cylinder displacement, it depends on the cylinder bore and piston stroke. Engine displacement is the cylinder volume sum, generally used for ml (ML ) to represent, exhaust volume is the most important structural parameters of engine.Exhaust volume calculation formula of diameter of the piston is simple: mm×mm×mm×stroke piston diameter0.7854( as a constant ) / 1000( converted to CC ) x number of cylinders
Do you want to have a charming chest muscle? Do you want to have a strong build chest muscle? Do you want to be around a woman a sense of security? Then take a look below.
In order to obtain the best strength training effect, people usually use a heavier load to do the less the number of times. But if your goal is just trying to pectoral turn out to be a tension type, and perhaps use a lighter weight, increased range of motion will lead to better results, but can also avoid shoulder injury. This is California, a private coach S & P Castro put forward the latest proposal. He designed set of exercises at the same time improve the pectoral appearance but also to some extent, to strengthen the muscle strength and endurance. Read the rest of this entry »