The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 03, 2009
Filed:
Apr. 26, 2007
Gary J. Hazelton, White Lake, MI (US);
Fabien G. Redon, Southfield, MI (US);
Boris D. Stojkovic, Ann Arbor, MI (US);
Konstantin V. Tanin, Ann Arbor, MI (US);
Sherif H. Tahry, Troy, MI (US);
Gary J. Hazelton, White Lake, MI (US);
Fabien G. Redon, Southfield, MI (US);
Boris D. Stojkovic, Ann Arbor, MI (US);
Konstantin V. Tanin, Ann Arbor, MI (US);
Sherif H. Tahry, Troy, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A method for calibrating an engine is provided. The engine includes a cylinder for combustion of a fuel. The method includes setting combustion parameters of the engine, detecting a combustion noise during combustion proximate to the cylinder, detecting an engine sound radiated from the engine during combustion, adjusting the combustion parameters and repeating the steps of detecting a combustion noise and detecting an engine sound. The method further includes generating a relationship between the combustion noises and the engine sounds, determining a combustion noise level that correlates to a predefined engine sound threshold from the relationship, adjusting a speed of the engine and a load on the engine and repeating the previous steps to determine a combustion noise level for each engine speed and engine load setting, and calibrating the engine using the combustion noise levels.