| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a crankcase ventilator for an internal combustion engine, efficiently ventilating the inside of a crankcase of the internal combustion engine. Ž<P>SOLUTION: The inside of the crankcase 11 is divided into a plurality of crank compartments 11a-11d with respect to each cylinder 3 having at least a different phase of vertical movement of a piston 4. A fresh air introducing port 43 formed in each of the crank compartments 11a-11d is opened in a position with a counterweight 17 approaching when the piston 4 in the same section as the fresh air introducing port 43 is lowered and with no counterweight 17 approaching when the piston 4 is lifted. A blowby gas discharge opening 44 formed in each of the crank compartments 11a-11d is opened in a position with the counterweight 17 approaching when the piston 4 in the same section as the blowby gas discharge opening 44 is lifted and with no counterweight 17 approaching when the piston 4 is lowered. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
|
