Combustion condition detector for internal combustion engine

Abstract

Abstract PURPOSE:To educe a combustion information by a simple method, by detecting the revolution velocity of an internal combustion engine, and at the same time seeking a revolution velocity correction quantity against this revolution velocity, and deciding an internal combustion engine combustion condition from a correc tion revolution velocity obtained from the revolution velocity correction quantity. CONSTITUTION:An angle counter 15 is reset at a predetermined timing, and a signal 5a outputted at every fixed crank angle is calculated, and a crank angle theta is calculated by means of a means 16 from this calculated value 13, and a timer signal 14 whose purpose is to detect a revolution velocity by means of a fixed crank angle position and width, is outputted. And a signal from a clock 18 is counted by means of a counter 19 only while the timer signal 14 is being outputted, and a revolution velocity omega is made to be calculated 20 from this count value. Also, a predetermined table value h(theta) is searched 17 on the basis of the crank angle theta, and a revolution velocity correction quan tity omegac and a correction revolution velocity omegag are calculated 21 from the above respective values omegag, theta, and a combustion condition is decided 22 from respective values omegag, theta.

Inventors

• 👤 Yutaka Takaku
• 👤 豊 高久
• 👤 Mineo Kashiwatani
• 👤 峰雄 柏谷
• 👤 Naoyuki Tanaka
• 👤 直行 田中

Bibliographic Details