| 摘要 |
PURPOSE:To report it to a driver whether fuel charge is normal or not, by displaying the fuel charge on a display element on a basis of the output of a detection signal, which is obtained when a vehicle speed, an intake negative pressure, and an engine rotation number satisfy set conditions, in a vehicle provided with a manual speed change gear. CONSTITUTION:A speed detector 1 outputs a high level for the vehicle speed higher than a set speed v1 and outputs a low level for the vehicle speed lower than the set speed v1 and gives this output to AND circuits 2 and 3. An intake negative pressure detector 4 outputs a high level when an intake negative pressure PB1 is within a set range, and the detector 4 outputs a low level when this intake negative pressure PB1 is outside the set range, and this output is given to the circuit 2 through a delay circuit 5. Rotation number detectors 6 and 7 detect the relation between set rotation numbers Ne1 and Ne2 and give it to the circuit 2 through a changeover switch 8. A speed detector 10 detects a set speed v2 (v2>v1) to control the switch 8 through an exciting coil 9. An intake negative pressure detector 11 detects an intake negative pressure PB2 (PB2>PB1) and gives it to the circuit 3. Outputs of circuits 2 and 3 light a lamp 14 through an OR circuit 12 and a transistor 13. |
