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A measuring device for measuring a fuel injection quantity comprising fuel volume sensing means including a fuel injection chamber connected to a fuel injection valve and receiving the fuel injection quantity therefrom, a back pressure chamber which faces the fuel injection chamber, bulkhead means l

A measuring device for measuring a fuel injection quantity comprising fuel volume sensing means including a fuel injection chamber connected to a fuel injection valve and receiving the fuel injection quantity therefrom, a back pressure chamber which faces the fuel injection chamber, bulkhead means located between the fuel injection chamber and the back pressure chamber as an intercept therebetween and responsive to the fuel injection quantity for generating a displacement, sensing means for sensing the displacement of the bulkhead means, pressure means for holding a pressure of the back pressure chamber to be of a constant value, fuel injection quantity computing means responsive to the sensing means for determining a fuel injection quantity, discharging means including fuel discharging means for discharging the injected fuel quantity from the fuel injection chamber to its exterior, discharging quantity computing means responsive to the fuel injection quantity computing means for computing a discharged quantity, and discharge control means responsive to the discharging quantity computing means for controlling the fuel discharging means so as to control the discharged quantity.

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A measuring device for measuring a fuel injection quantity, comprising: fuel volume sensing means including a fuel injection chamber connected to a fuel injection valve and receiving said fuel injection quantity therefrom, a back pressure chamber which faces said fuel injection chamber, bulkhead mea

A measuring device for measuring a fuel injection quantity, comprising: fuel volume sensing means including a fuel injection chamber connected to a fuel injection valve and receiving said fuel injection quantity therefrom, a back pressure chamber which faces said fuel injection chamber, bulkhead means located between said fuel injection chamber and said back pressure chamber as an intercept therebetween and responsive to said fuel injection quantity for generating a displacement, sensing means for sensing said displacement of said bulkhead means, and pressure means for holding a pressure of the back pressure chamber to be of a constant value, fuel injection quantity computing means responsive to said sensing means for determining a fuel injection quantity, discharging means including fuel discharging means for discharging said injected fuel quantity from said fuel injection chamber to its exterior, discharging quantity computing means responsive to said fuel injection quantity computing means for computing a discharged quantity, and discharge control means responsive to said discharging quantity computing means for controlling said fuel discharging means so as to control said discharged quantity.