| 摘要 |
PURPOSE:To enable an intake pipe pressure to be correctly detected by a simplified device, by correcting the intake pipe pressure, detected by a pressure detecting means, in accordance with a throttle opening and an engine speed as necessary. CONSTITUTION:An internal-combustion engine EG, having a throttle valve T in every intake pipe I in each cylinder, provides in the downstream side of the throttle valve T for the cylinder in quantity smaller than the number of cylinders a pressure detecting means M11 detecting an intake pipe pressure synchronously with a crank angle of the internal-combustion engine EG. While the engine provides a speed detecting means M12 and a throttle opening detecting means M13 detecting a throttle opening in a frequancy higher than the detecting frequency of the pressure detecting means M11. And the engine, correcting in a correcting means M14 a detection value of the intake pipe pressure in accordance with a speed and a detection value of the throttle opening, obtains a value in accordance with the intake pipe pressure of the engine EG.
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