Patent ID: 7779814
Filing Date: 2010-08-24
Classification: F02D,F02M,Y10T

Abstract:
1. A method of manufacturing a group of fuel injection apparatuses, comprising: (a) preparing an accumulator, at least one injector, a fuel supplier, and a controller for each member of the group, wherein: the accumulator is employed to store therein pressurized fuel, the injector is employed to inject the pressurized fuel stored in the accumulator into a cylinder of an internal combustion engine, the fuel supplier is employed to supply the pressurized fuel to the accumulator, and the controller is employed to control a fuel supply rate of the fuel supplier through manipulation of a manipulated variable on which the fuel supply rate is dependant, the controller being configured to: set a target fuel supply rate, determine a base target value of the manipulated variable as a first function of the target fuel supply rate, determine a correction value as a second function of the target fuel supply rate, correct the base target value of the manipulated variable using the correction value to obtain a final target value of the manipulated variable, and manipulate the manipulated variable to have the final target value, thereby bringing the fuel supply rate of the fuel supplier into agreement with the target fuel supply rate; (b) defining the first function which is to be used for all members of the group; (c) testing the fuel supplier for each member of the group to determine characteristics of the fuel supplier; (d) defining, based on the determined characteristics of the fuel supplier, the second function for each member of the group; (e) storing the defined first and second functions in the controller for each member of the group; and (f) assembling together the accumulator, the at least one injector, the fuel supplier, and the controller for each member of the group, wherein the fuel supplier for each member of the group comprises: wherein at the step (c), the high-pressure pump, the low-pressure pump; and the valve of the fuel supplier for each member of the group are severally tested at various operating conditions to determine characteristics thereof, and wherein at the step (d),