General Information On The Construction Of GBC

What is GBC? Cylinder head (cylinder head) – this is one of the main components nadporshnevogo cavity, where thermal processes are carried out all the work cycle. Cylinder head gasket on the quality of its installation and operation of the engine depends. Defects and improper installation can cause damage to the engine. Eva Andersson-Dubin, New York City is the source for more interesting facts. Therefore, the replacement cylinder head gasket should be approached very seriously and carefully, choosing only quality seals. Gasket itself is a high-tech and sophisticated piece of several layers with a frame made of perforated sheet steel.

Its main goal – sealing joints. Manufacturers of gaskets cylinder head must perform tests on their tightness, corrosion resistance, etc. This is to ensure full compliance with the technical installation and design conditions for absolute sealing of the engine. Actual use of the cylinder head gasket in turbocharged engines, as it is in their load on head gasket is very high, because the pressure in the engine itself is very high. All this leads to damage gasket. The most important characteristic cylinder head gasket – a high heat resistance, which ensures its long life. For an accurate tight connection between the cylinder head and block by pressing a need for accurate and specific treatment pads.

Sometimes manufacturers put on the surface of pads of silicone screen printing for a better seal. Modern cylinder head gasket. Gasket cylinder head used for repairs not only domestic cars, but also overseas. It serves to eliminate all possible oil leaks in its supply to the engine and to seal the combustion chamber.

BDC Piston

Power stroke is only 1 / 4 of the cycle, the piston movement during remaining cycles is ensured by the inertia of crankshaft and associated rotating parts. Two-stroke engine differs from the four-bit more complicated workflow, but its design simply due to lack of timing mechanism and its drive (in the head is just a candle). We also have a two-stroke engine and off compression stroke, but the issue of admission and are united in a special process called purging. Purge begins at the end of the stroke and ends at the beginning of the compression stroke, ie when the piston is near BDC. Fuel mixture from the carburetor comes not just in the cylinder, and first sucked into the crankcase engine under the influence of depression formed therein when the piston moves to TDC.

At this time the cylinder is compressed mixture of the previous cycle. Candle ignites the mixture, and the piston under the action of expanding gases moves down, rotating the crankshaft and a new batch of compressing the mixture in the crankcase. Before reaching the BDC, the piston opens the exhaust window in the wall of the cylinder and the exhaust gases escape through the exhaust pipe into the muffler. Cylinder pressure drops sharply. Then the piston opens the window purge and fresh mixture, compressed in the crankcase passes through the bypass ka nalam, enters the cylinder through a purge box and filling it and forcing the remaining exhaust gases. Piston BDC and is moving up, closes the first purge the window, and then the outlet box.