Title:
The control method of a pressure accumulation type fuel injection control device and a pressure accumulation type fuel injection control device
Document Type and Number:
Japanese Patent JP5975571
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve silence of an internal combustion engine by reducing combustion noise under low load, typically during idling of the internal combustion engine.SOLUTION: In an accumulator type fuel injection control device including an injector for supplying a fuel to an internal combustion engine, a common rail to which the injector is connected, a high-pressure pump for force feeding the high-pressure fuel to the common rail, a flow rate control valve for adjusting a fuel supply amount to a pressure chamber of the high-pressure pump, a pressure control valve for adjusting a discharge amount of the high-pressure fuel, and a control device for controlling a rail pressure of the common rail, the control device is constituted to execute at least a control mode for closed-loop controlling both of the flow rate control valve and the pressure control valve, and a control mode for closed-loop controlling only the flow rate control valve, and the rail pressure of the common rail is controlled in the control mode for closed-loop controlling both of the flow rate control valve and the pressure control valve when the rail pressure of the common rail is less than a prescribed threshold value.
Inventors:
Kota Hashimoto
Kazuyuki Matsumura
Kazuyuki Matsumura
Application Number:
JP2012277651A
Publication Date:
August 23, 2016
Filing Date:
December 20, 2012
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
F02D41/04; F02M55/02; F02M59/36; F02M63/00; F02M69/54
Domestic Patent References:
| JP2009174451A | ||||
| JP2011247220A | ||||
| JP2004036498A | ||||
| JP2003322067A |
Foreign References:
| US20110041808 |
Attorney, Agent or Firm:
Oba Reiji
Hajime Takahashi
Hajime Takahashi