| 摘要 |
PURPOSE:To achieve a higher pressure in a burning chamber by providing a reversal flow inhibiting section in an exhaust pipe, and by causing a spark to be generated at a spark rod for forced ignition every time at the completion of intake of air and fuel gas by means of the negative pressure in the burning chamber in a preceding burning process. CONSTITUTION:When a spark is generated for forced ignition at the point (a) in the diagram, the pressure inside a burning chamber 1 first becomes high, and then, there is a negative pressure once burnt gas is discharged through an exhaust pipe 2. This in turn causes the air and fuel gas to be drawn into the burning chamber 1, and the pressure recovers. In this instance, as a reversal flow inhibiting section 11 is disposed in the exhaust pipe 2, the amount of exhaust gas that returns to the burning chamber 1 is small. As a result, the intake of the air and fuel gas can efficiently be done, and the ignition of the air-fuel mixture due to the returning exhaust gas as the ignition source can be prevented. In this manner, the intake of the air and fuel gas is completed and the pressure in the burning chamber 1 returns to point (b) to complete one cycle. Thereafter, a pulse generator 12 generates a following pulse to cause a spark rod 13 to generate a spark for forced ignition, which starts the burning of the following cycle. |
