| 摘要 |
PURPOSE:To give instruction for safe and effective fuel consumption by alarming when the number of rotation exceeds a specified upper limit, or a reference number of rotation between the upper limit rotation and an idling rotation or the fuel adjusting member exceeds a specified upper limit value. CONSTITUTION:A rotation signal from a rotation sensor 2 is input to an integration circuit 7 through a wave form shaping circuit 4, differentiation circuit 5, monostable multi-vibrator 6, and a signal Vr that corresponds to rotation N is input to comparison circuits 8 and 9 and applied to them. Reference signals V1 and V2 for the upper limit value N1 of economical fuel consumption running and the differential rotation N2 between N1 and the idling rotation are input to comparators 8 and 9 through first and second reference voltage generating circuits 10 and 11. A reference signal for the amount theta1 of the upper limit stepping-in and an acceleration signal S1 from a third reference voltage generating circuit 12 and an acceleration signal generating circuit 3 are input to a comparator 13. When N>N1, and theta>theta1, at NN2 through an AND gate 14 and OR gate 17, a signal L is output to give instruction for safe and effective fuel saving. |
