Knocking detector for internal combustion engine

Abstract

Abstract PURPOSE: To carry out judgement of knocking, detecting engine vibration value with a detector, comparing average value with the peak value, by detecting whether its difference is more than prescribed number of time. CONSTITUTION: Signal from vibration detector 4 installed to the engine is put into comparator 15 constructed knocking judgement circuit through amplifier 8 magnitude circuit 9 as peak value of vibration, permitting to input to comparator 15 through the first, the second integrator 10, 11 composed of analog switch 104, 106, 126, and computing amplifier 121 and multiplier 12, sample hold circuit 13 as average value of vibration, when the difference of both signal is more than certain value, knocking is detected with the number of times classifying circuit 16. Signal of distributer 1 and the number of times sensor 3 is sent through pulse generator 7, the factor is compensated in accordance with speed. COPYRIGHT: (C)1979,JPO&Japio

Inventors

• 👤 Norio Omori
• 👤 Hideya Fujisawa
• 👤 Yutaka Kawashima
• 👤 Masakazu Ninomiya
• 👤 Hisashi Kawai
• 👤 Takeshi Matsui

Bibliographic Details