|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||123/09011; 251/12915; 251/12918|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 9 인용 특허 : 1|
An electromagnetic valve unit in an internal combustion engine is controlled by determining a difference between the output of a displacement sensor when a valve head is in an open position and the output of the displacement sensor when the valve head is in a closed position in each period of an opening and closing action of the valve head. The difference corresponds to a full displacement of the valve head between the open position and the closed position. The electromagnetic valve unit is also controlled by establishing, using the difference, a thresho...
1. A method of controlling an electromagnetic valve unit in an internal combustion engine, having a valve head reciprocally movable between an open position for opening an intake or exhaust port of a combustion chamber in the internal combustion engine and a closed position for closing the intake or exhaust port, biasing means for biasing said valve head to a neutral position between said open position and said closed position, a valve-opening electromagnet for displacing said valve head into said open position under electromagnetic forces, a valve-closi...