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为了提高发动机的效率和降低排放,在研究和开发试验中对气缸压力进行测量是必不可少的。通常,把压电传感器直接装入气缸盖或发动机机体中。对火花点燃式发动机来说,采用测量用火花塞是减少费用和缩短研制周期的替代方法。测量用火花塞有两种功能。在对发动机的气缸压力进行精确和可靠的测量时,还必须点燃燃烧气体。Kistler公司研制的测量用火花塞有高阻抗型和低阻抗型。然而,测量用火花塞首先
In order to improve engine efficiency and reduce emissions, it is essential to measure cylinder pressure in research and development trials. Piezoelectric sensors are usually mounted directly into the cylinder head or into the engine block. For spark-ignited engines, the use of spark plugs for measurement is an alternative to reducing costs and shortening the development cycle. The spark plugs for measurement have two functions. Burning gas must also be ignited when making accurate and reliable measurements of the engine’s cylinder pressure. Kistler company developed the spark plug with high impedance and low impedance type. However, measuring the spark plug first