Invention Grant
- Patent Title: Method to diagnose a failure of an OPCJ valve of an internal combustion engine
- Patent Title (中): 诊断内燃机的OPCJ阀的故障的方法
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Application No.: US13043144Application Date: 2011-03-08
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Publication No.: US09140152B2Publication Date: 2015-09-22
- Inventor: Morena Bruno , Davide Donna , Roberto Argolini
- Applicant: Morena Bruno , Davide Donna , Roberto Argolini
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Agency: Ingrassia Fisher & Lorenz PC
- Priority: GB1003852.9 20100309
- Main IPC: G01M15/00
- IPC: G01M15/00 ; F01M1/08 ; F01P3/06
Abstract:
A method is provided to diagnose a failure of an OPCJ valve of an internal combustion engine. The OPCJ valve is located in an auxiliary line connecting an engine lubrication line to at least an oil jet for squirting lubricating oil from the engine lubrication line towards a piston surface. The method provides for monitoring the pressure variation in the engine lubrication line due to a switching signal sent to the OPCJ valve.
Public/Granted literature
- US20110224883A1 METHOD TO DIAGNOSE A FAILURE OF AN OPCJ VALVE OF AN INTERNAL COMBUSTION ENGINE Public/Granted day:2011-09-15
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