| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection quantity control device calculating return pressure by computing without using a pressure sensor and inhibiting increase of a cost without increasing the number of parts of an accumulator fuel injection device. SOLUTION: The fuel injection quantity control device for controlling the accumulator fuel injection device includes a target injection quantity computing part computing a fuel injection quantity to a diesel engine; a fuel injection valve control part controlling operation of a fuel injection valve, based on the fuel injection quantity; and a return pressure computing part calculating pressure in a return passage in which fuel let out from a back pressure control chamber flows, based on the rotational speed of the diesel engine, the fuel injection quantity to the diesel engine and pressure in a common rail. COPYRIGHT: (C)2011,JPO&INPIT |
