| 摘要 |
PURPOSE:To prevent unstable idling of engine by increasing the opening area of bypath by predetermined amount upon dropping of battery voltage below setting level under idling. CONSTITUTION:An electronic control circuit 20 comprising a microcomputer will vary the open area of bypath 23 for air to be fed to an engine 1 while detouring a throttle valve 10, under idling of engine 1, on the basis of the difference between engine revolution and target level from a crank angle sensor 18 to feedback control the idle revolution. Upon dropping of battery voltage 26 for storing power generated from engine below 12.5V, open area is increased by predetermined amount to additionally control 1SCV quickly upon variation of electric load. Consequently stable idling can be achieved. |
