| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To dilute lubricating oil in a crankcase CK by scraping injected fuel adhered on an inner wall of a combustion chamber 16 using a piston 30 into the crankcase CK when injecting fuel for regeneration control of a DPF 38a by a fuel injection valve 20 into the fuel chamber 16. <P>SOLUTION: Main injection contributing to generation of torque is performed upon the piston 30 of a diesel engine 10 coming near a compression top dead center. Thereafter, in a latter stage of a compression stroke when the piston 30 is moved down, post injection for regeneration control of a DPF 30a is performed. By opening a pressure-reducing valve 46 between the main injection and the post injection, fuel pressure of the common rail 44 is lowered. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
