| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel supply control device for an internal-combustion engine capable of controlling the fuel pressure accurately irrespective of the cam phase even in case a cam phase variable mechanism is installed, and of maintaining well the fuel consumption and the exhaust gas characteristics. <P>SOLUTION: The fuel supply control device of the internal-combustion engine 3 having the cam phase variable mechanism 50 to change the cam phase CAEX of a cam shaft 9 with respect to a crank shaft 3f, is equipped with a delivery pipe 12 to supply the fuel to a fuel injection valve 10, a pump driving cam 17 installed on the cam shaft, a fuel pump 16 driven by the cam 17 and pressurizing the fuel sucked in from a fuel tank 14 and discharging it to the delivery pipe 12, a spill control valve 26 to operate during the fuel pressurization and circulating the fuel back to the fuel tank 14 for controlling the pressure PF of the fuel in the delivery pipe 12, and an operating timing setting means 2 to set the operating timing THEHPSST of the spill control valve 26 in accordance with the cam phase sensed. <P>COPYRIGHT: (C)2008,JPO&INPIT |
