CONTAMINATION CHECK SYSTEM FOR FILTER
To more easily check a contamination state of a filter provided in a blow-by gas passage.SOLUTION: A contamination check system 1 for a filter 62 provided in a blow-by gas passage 60 for connecting a crank chamber 22 of an engine 2 mounted to a vehicle with an intake passage 27, includes: a first ac...
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Zusammenfassung: | To more easily check a contamination state of a filter provided in a blow-by gas passage.SOLUTION: A contamination check system 1 for a filter 62 provided in a blow-by gas passage 60 for connecting a crank chamber 22 of an engine 2 mounted to a vehicle with an intake passage 27, includes: a first acquisition section 4 for acquiring internal pressure P1 of the crank chamber 22; a second acquisition section 5 for acquiring intake pressure P2 of the engine 2; a first calculation section 8A for when the internal pressure P1 of the crank chamber 22 is higher than the intake pressure P2, acquiring an integrated value ΣΔP of a pressure difference ΔP; a second calculation section 8B for calculating differential values D1, D2 each obtained by differentiating the integrated value ΣΔP calculated by the first calculation section 8A by a traveling time T or a traveling distance L of the vehicle; a determination section 9 for determining whether the differential values D1, D2 calculated by the second calculation section 8B exceed a predetermined value; and an information section 7 for informing a contamination state of the filter 62 when the determination section 9 determines that the differential values D1, D2 exceed the predetermined value.SELECTED DRAWING: Figure 1
【課題】ブローバイガス通路内に設けられるフィルタの汚損状態をより簡単に把握できるようにする。【解決手段】車両に搭載されたエンジン2のクランク室22と吸気通路27とを接続するブローバイガス通路60内に設けられたフィルタ62の汚損チェックシステム1は、クランク室22の内圧P1を取得する第一取得部4と、エンジン2の吸気圧P2を取得する第二取得部5と、クランク室22の内圧P1が吸気圧P2よりも高い場合に、その圧力差ΔPの積算値ΣΔPを算出する第一算出部8Aと、第一算出部8Aで算出された積算値ΣΔPを車両の走行時間Tまたは走行距離Lで微分した微分値D1,D2を算出する第二算出部8Bと、第二算出部8Bで算出された微分値D1,D2が所定値を超えたか否かを判定する判定部9と、判定部9で微分値D1,D2が所定値を超えたと判定された場合に、フィルタ62の汚損状態を報知する報知部7とを備える。【選択図】図1 |
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