| 摘要 |
PURPOSE:To reduce the frequency of use of an engine starter to enhance the durability thereof and to make a battery small, by attaching a flywheel onto a crankshaft which is adapted to be engaged to the latter by means of compressed gas in order to control stored energy. CONSTITUTION:Upon engine braking and engine idling, fuel injection devices 14 in the number of a half of all engine cylinders cut off the supply of fuel by a signal from a control device 26 and the associated engine cylinders are communicated to an exhaust pipe 20 through a three-way solenoid valve 17 in order to charge exhaust gas into an air-sump 21. When the control device 26 detects a rotational speed exceeding a predetermined rotational speed, the three-way solenoid valve 22 is opened to allow compressed air in the air-sump 21 to actuate a clutch 10 so that a crankshaft 8 and a flywheel 7 are engaged and rotated together. When the control device 26 detects a rotational speed less than the predetermined rotational speed, the three-way solenoid valve 22 is closed to discharge pressure in the clutch 10 to the atmosphere so that the flywheel 7 is released from the crankshaft 8 to rotate freely. When a restarting signal is delivered to the control device 26 after an engine 6 is stopped, the latter is restarted by the inertia torque of the flywheel 7 by means of the three-way solenoid valve 22 and the clutch 10 although a starter 2 is not operated. |
