PARTICLE DETECTION SYSTEM

摘要

A particle detection system includes a sensor main body having an electrification section for electrifying particles contained in a gas under measurement so as to produce electrified particles, and detects the particles contained in the gas under measurement by using the electrified particles. The sensor main body has a heater portion which generates heat upon energization so as to heat at least a portion of the electrification section. The particle detection system includes period detection means for detecting a burnable period (for example, fuel cut period) during which the gas under measurement contains oxygen for burning particles adhering to the electrification section, and heater energization control means for energizing the heater portion during the burnable period so as to heat at least a portion of the electrification section to a temperature at which the adhering particles burn.

主权项

1. A particle detection system which includes a sensor main body having an electrification section for electrifying particles contained in a gas under measurement so as to produce electrified particles and which detects the particles contained in the gas under measurement by using the electrified particles, wherein
the sensor main body has a heater portion for heating at least a portion of the electrification section; and the particle detection system comprises: period detection means for detecting a burnable period during which the gas under measurement contains oxygen for burning particles adhering to the electrification section, and heater energization control means for energizing the heater portion during the burnable period so as to heat at least a portion of the electrification section to a temperature at which the particles adhering to the electrification section burn.