| 摘要 |
1338888 Function generators BENDIX CORP 3 Aug 1972 [10 Aug 1971] 36316/72 Heading G4G [Also in Division G1] In an I.C. engine fuel supply control system, an interfacing circuit is interposed between an intake manifold pressure transducer producing an electrical signal #, V 0 linearly related to intake air pressure and a computing unit for determining the amount of fuel to be supplied, the interfacing circuit including a plurality of current generators A-E, receiving the electrical signal #, V 0 and generating in response thereto respective currents each having a non-linear variation law, and means for combining the currents to provide an electrical output signal to the computing unit, which signal is a non- linear function of the intake air pressure. As described, the computing unit is part of an intermittent fuel injection system, Figs. 1 and 2 (not shown), and the transducer is a potentiometer. Each current generator B-E has a feedback transistor 112B-112E connected to the preceding current generator, and the output currents of the generators, Fig. 4, are combined on a line 128 and converted into a voltage by resistor 100 to produce the non-linear variation curve shown in Fig. 5. A plurality of current sinks V-Z may be provided and selectably connected to the current generators to produce variations in the current functions. A constant current generator 102 may be provided to provide for level shifting of the final output curve. |
