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Tool for installing a roller tappet in an internal combustion engine and relative method

An internal combustion engine and roller tappet technology, which is applied to engine components, machines/engines, manufacturing tools, etc., can solve the problems of increasing the manual assembly of roller tappets, complicated time efficiency, and complicated operations, and achieves fast and easy connection. The effect of simple positioning and precise axial arrangement

Inactive Publication Date: 2017-08-08
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] This operation can be particularly complex, not least because usually the upper side of the cylinder head is not a flat surface, for example it typically includes a number of non-planar surfaces
Therefore, correctly positioning the roller lifter in the bore of the cylinder head can be complicated
Furthermore, the roller tappets usually include anti-rotation protrusions to couple with anti-rotation seats obtained in the bore of the cylinder head, thus increasing the difficulty of manual assembly of the roller tappets in the bore of the cylinder head, resulting in Complicated and time-inefficient operations

Method used

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  • Tool for installing a roller tappet in an internal combustion engine and relative method
  • Tool for installing a roller tappet in an internal combustion engine and relative method
  • Tool for installing a roller tappet in an internal combustion engine and relative method

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Embodiment Construction

[0044] Exemplary embodiments will now be described with reference to the disclosed figures without limiting application and use.

[0045] Some embodiments may include such as figure 1 and figure 2The illustrated automotive system 100 includes an internal combustion engine (ICE) 110 having an engine block 120 defining at least one cylinder 125 having a piston 140 coupled to rotate a crankshaft 145 . Cylinder head 130 cooperates with piston 140 to define combustion chamber 150 . A fuel and air mixture (not shown) is disposed in combustion chamber 150 and ignited, producing thermally expanding exhaust gases that cause reciprocating motion of piston 140 . Fuel is provided by at least one fuel injector 160 and air is provided through at least one air intake 210 . Fuel is provided at high pressure to fuel injector 160 from fuel rail 170 in fluid communication with a high pressure fuel pump that increases the pressure of fuel from fuel source 190 . According to a possible embodi...

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Abstract

A tool (1) is disclosed for installing a roller tappet (20) in a bore (130a) of the cylinder head (130) of an internal combustion engine (110). The tool includes an elongated body (2) and a connection head (3) arranged at one end of the elongated body (2) and configured to be at least in part inserted into an opening (20a) of the roller tappet (20). The tool (1) further includes at least one reversible constraining element (15) of the connection head (3) to the roller tappet (20).

Description

technical field [0001] The technical field relates to the installation of roller tappets in cylinder heads of internal combustion engines. Background technique [0002] Roller lifters are used in internal combustion to operatively connect the cam of a rotatable shaft (eg, a camshaft) of an internal combustion engine to a fuel cell pump for actuating the latter. Thus, the roller lifters are housed inside the bore of the cylinder head and are typically manually put into position by inserting them from the upper side of the cylinder head. [0003] This operation can be particularly complex, not least because usually the upper side of the cylinder head is not a flat surface, eg it typically comprises a number of non-planar surfaces. Therefore, correctly positioning the roller lifters in the bore of the cylinder head can be complicated. Furthermore, the roller tappets usually include anti-rotation protrusions to couple with anti-rotation seats obtained in the bore of the cylind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P19/04
CPCB23P19/04B25B27/06F02M59/48B25B27/0035F02M59/102B25B27/00F01L1/46B23P19/042
Inventor A·帕尔马A·康蒂
Owner GM GLOBAL TECH OPERATIONS LLC
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