| 摘要 |
<p>PURPOSE: A valve control method of four cycle diesel engine is provided to reduce thermal load of an engine by decreasing the temperature of exhaust gas and components. CONSTITUTION: Dwell areas(12a,12b) of an exhaust valve lift(10) are reduced, and guide the exhaust valve to be closed. The collision between a piston and the valve is prevented. A tilt angle of closing areas(13a,13b) of the exhaust valve lift is gentle. The exhaust valve closing time is delayed. The closing section and open sections(11a,11b) of the exhaust valve are crossed.</p> |
