Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.143/CHE/2012 A
(19) INDIA
(22) Date of filing of Application :13/01/2012 (43) Publication Date : 21/06/2013
(54) Title of the invention : ELECTRIC-ACTUATED CONTROL VALVE OF A UNIT FUEL INJECTOR
(51) International classification :F01L
(31) Priority Document No :13/010,980
(32) Priority Date :21/01/2011
(33) Name of priority country :Argentina
(86) International Application No
:NA
Filing Date
:NA
(87) International Publication No : NA
(61) Patent of Addition to Application Number :NA
Filing Date
:NA
(62) Divisional to Application Number
:NA
Filing Date
:NA
(71)Name of Applicant :
1)International Engine Intellectual Property Company
LLC
Address of Applicant :4201 Winfield Road Warrenville
Illinois 60555 U.S.A.
(72)Name of Inventor :
1)EL-BESHBEESHY Mahmoud S.
2)SIUCHTA Grzegorz
3)MALHOTRA Rakesh
(57) Abstract :
A unit fuel injector (10) has a control valve (40) in which a valve spool (92) is displaceable within a bore (91) of a valve body (90)
between a limit of displacement that fully opens an oil outlet port (42) to an oil inlet port (44) while closing an oil drain port (106)
to the oil outlet port and a limit of displacement that closes the oil outlet port to the oil inlet port while opening the oil outlet port
to the oil drain port. The valve spool has a spool body (96) whose geometry defines an exterior envelope of the valve spool.
Permanent magnets (98 100) are disposed within a bore of the spool body inside of the exterior envelope and electromagnets
(102 104) are electromagnetically coupled with the permanent magnets for displacing the valve spool within the valve body bore.
No. of Pages : 20 No. of Claims : 10
The Patent Office Journal 21/06/2013 13807