| 摘要 |
The present invention relates to a method for Combustion ventilation (scavenging) in a two stroke internal combustion engine, and in the internal combustion engine, each air cylinder (1) is provided with at least one gas admittance valve (3) and exhaust valve (4) on a air cylinder head (10), wherein a piston (2) plays stroke movement between a upper dead point (OT) and a lower dead point (UT) inside the air cylinder (1), and is provided with a air cylinder chamber (11) with volume variable relative to the air cylinder head (10). The ventilation (scavenging) controls by means of the gas admittance valve (3) and the exhaust valve (4), and improves intake pressure higher than delivery pressure by means of a pressurization system. The method is capable of realizing effective scavenging and energy produced in combustion can be maximally utilized, namely efficiency is enhanced. A suggestion is give to complete the ventilation (scavenging) in upper section of the stroke sport (9) from the UT to the OT by the piston. |
