| 摘要 |
PURPOSE:To use an intake heater near its limit of thermal resistance by forming the heater by ceramics and by controlling the voltage impressed on the heater on the basis of the data obtained through direct sensing of heater temperature. CONSTITUTION:A heater 10 is given a rod form and enclosed in a cylindrical holder 13 from the gasification end 11 to combustion end 12. The heater 10 is formed by ceramics by means of hot press, and inside it two elements are installed by means of printed wiring, where one is a pyrogenic resistance 14 consisting of tungsten and the other, a thermo-couple 15. The thermo-couple 15 can inform the temp. of the heater accurately by sensing it directly with its electromotive force, and through monitoring in the ceramics can be used near its limit of thermal resistance. Thereby heating of suction gas can be made in good performance to ensure enhancement of the starting characteristics of engine. |
