Na aciu uz papyldimus - turiu pripazinti kad sioje vietoje suklydau (netycia... ;) ) parases kad reikia isitikinti ar stumoklis nesidauzys i atvyrus voztuvus- is tiesu, jis gali dauzytis tik i uzdarytus ar besiuzdarancius (taip, taip) voztuvus, kaip parase kolega DARKA - RESPECT
Dabar toliau - apie suspaudimo laipsni ir kompresija mes jau diskutavome, taciau siulau perskaityti stai ka....
The compression ratio is a single number that can be used to predict the performance of any internal-combustion engine. It is a ratio between the volume of a combustion chamber and cylinder when the piston is at the bottom of its stroke, and the volume when the piston is at the top of its stroke. The higher the compression ratio, the more mechanical energy an engine can squeeze from its air-fuel mixture. Higher compression ratios, however, also make detonation more likely.
This minimum volume of the space into which the fuel and air is compressed prior to ignition, usually is measured directly rather than calculated. Due to pinging (detonation), the CR in a gasoline/petrol or LPG or CNG-powered engine will usually not be much higher than 10:1.
In engines with a ping or knock sensor and an electronic control unit, the CR can be as high as 13:1 (2005 BMW K1200S)
In a turbo charged or super charged engine the CR will be around 8.5:1
In a diesel engine the CR will be 14:1 and higher.
Measuring the compression pressure of an engine with a pressure gauge connected to the spark plug opening gives an indication of the engine's state and quality.
If the nominal compression ratio of an engine is given, e.g. as 1:10, then the measured pressure in each cylinder should be equal to or higher than 10 bar (see Boyle's law and combined gas law). If there is a significant (> 10%) difference between cylinders, that may be an indication that valves or cylinder head gaskets are leaking, piston rings are broken, cylinders are worn or that the engine block is cracked.
Straipsnio saltinis
CIA
Siulau ir paciam pagalvoti - juk yra akivaizdu, kad idejes tiek pat oro i cilindra kurio turis buvo sumazintas (nuo normalaus) , tas oras bus suspaustas stipriau - ar cia butina kaz ka aiskinti dar.....
;) - Elementari fizika....
Ir dar sis bei tas kad viskas paaisketu -
Apie variklius