Patent ID: 7063049
Filing Date: 2006-06-20
Classification: F01M,F01P

Abstract:
1. A piston cooling spray jet and installation tool there for comprising: a piston cooling nozzle, the nozzle having a hollow main body portion adapted to be press fit into a through bore of an engine cylinder block, a first end of the through bore located in a piston gallery and a second end of the through bore located in a main bearing journal, the through bore intersecting with an oil circuit in the cylinder block, a nozzle tube affixed thereto so that the nozzle tube is in fluid communication with a partially threaded interior passage in the hollow main body portion and with the oil circuit when the main body portion is mounted in the cylinder block, the main body portion of the nozzle further having an orientation feature; an installation tool comprising a main body portion adapted to mateably engage a surface of the main bearing journal, a cap screw extending through an aperture in the main body portion, and an orientation key affixed to the main body portion and partially surrounding the cap screw; wherein the nozzle is inserted into the through bore from a first side in the piston gallery and the installation tool is inserted in the through bore from a second side in the main bearing journal such that the main body portion of the installation tool mateably engages the surface of the main bearing journal while the cap screw and orientation key are received in the through bore; the cap screw is threaded into the interior passage of the main body portion of the nozzle and the orientation key of the installation tool mateably engages the orientation feature of the nozzle so that when the cap screw is tightened to a predetermined torque the nozzle is pulled into the through bore to a predetermined depth and at a predetermined orientation.