PURGE SYSTEM AND VEHICLE

• Main Authors: AKIBA TORU, IKEMOTO SHIRO, KUMADA TETSUYA
• Format: Patent
• Language: English; Japanese
• Published: 07.10.2021
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BLASTING; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL; WEAPONS

To provide a purge system for decreasing the frequency of operations of an air dryer reproducing a desiccant.SOLUTION: A purge system includes: an air dryer having a purge valve; a purge control valve controlled in either of a first control mode and a second control mode, the former in which to start supplying the purge valve with instruction pressure when tank pressure being pressure inside a main tank has reached a first pressure value, and the latter in which to stop the supply of the instruction pressure when the tank pressure has decreased to a second pressure value being lower than the first pressure value; and a control part for switching to the second control more from the first control mode in a case where at least any of the following conditions is met, i.e., a given operation is detected, an air supply volume in a given period is determined to be smaller than a first threshold, and a period of time from a clock time when the supply of instruction pressure has been started to a clock time when the supply of instruction pressure has been stopped is equal to or longer than a reference time.SELECTED DRAWING: Figure 1 【課題】エアドライヤでの乾燥剤の再生動作の頻度を少なくするパージシステムを提供することを目的とする。【解決手段】パージシステムは、パージバルブを有するエアドライヤと、メインタンク内の圧力であるタンク圧が第１の圧力値に達したときにパージバルブへの指示圧の供給を開始し、タンク圧が第１の圧力値よりも小さい第２の圧力値に低下したときに指示圧の供給を停止する第１の制御モード、および、指示圧の供給を停止する第２の制御モードのいずれかで制御されるパージ制御弁と、所定の操作が検出されたこと、所定期間におけるエア供給量が第１の閾値よりも少ないと判定したこと、および、指示圧の供給が開始された時刻から指示圧の供給が停止した時刻までの時間が基準時間以上であることの少なくともいずれかが満たされた場合、第１の制御モードから第２の制御モードに切り替える制御部と、を備える。【選択図】図１