CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

• Main Author: HATA YOSHIHARU
• Format: Patent
• Language: English; Japanese
• Published: 13.07.2017
• Subjects: BLASTING; COOLING OF INTERNAL-COMBUSTION ENGINES; COOLING OF MACHINES OR ENGINES IN GENERAL; CRANKCASE VENTILATING; ENGINE PLANTS IN GENERAL; HEATING; LIGHTING; LUBRICATING INTERNAL COMBUSTION ENGINES; LUBRICATING OF MACHINES OR ENGINES IN GENERAL; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

PROBLEM TO BE SOLVED: To prevent an oil film between a bore and a piston from being formed by a clearance (bore diameter R-piston diameter r) which is reduced during the abnormality of a control valve when making the opening of the control valve larger.SOLUTION: When using a motor control part 502 for making the opening larger, an oil jet device control part 505 instructs an OSV 161 to increase an oil injection amount. As a result, a difference in contraction amount between a bore diameter R and a piston diameter r becomes smaller to suppress a reduction in the clearance (bore diameter R-piston diameter r).SELECTED DRAWING: Figure 10 【課題】制御弁の異常時等に、制御弁の開度を大きくした際に間隙（ボア径Ｒ−ピストン径ｒ）が小さくなり、ボアおよびピストンの間のオイルの油膜の形成が阻害される。【解決手段】モータ制御部５０２により開度を大きくした際に、オイルジェット装置制御部５０５はＯＳＶ１６１に対してオイル噴射量を増大させるように指示をする。その結果、ボア径Ｒおよびピストン径ｒの収縮量の差が小さくなり、間隙（ボア径Ｒ−ピストン径ｒ）の減少を抑制することができる。【選択図】図１０