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:
May. 15, 1984
Filed:
Feb. 03, 1983
Ronald K Mudge, Brighton, MI (US);
Edwin E Rice, Farmington Hills, MI (US);
Ingersoll-Rand Company, Woodcliff Lake, NJ (US);
Abstract
Disclosed is a method and apparatus for cold testing of typical piston engines to determine their internal integrity and tolerance prior to further testing or use which could be destructive if a defect exists. A source of pressure oil is fed to the normal engine oil pressure system while the engine is slowly rotated. The amount of oil flow is measured and recorded by a unique orifice flow device which yields a differential pressure signal in proportion to the oil flow as the engine is rotated. The variation in oil flow in selected segments of rotation is analyzed to determine the engine condition. Such common assembly faults as missing rod or main bearings, loose bearing caps, or excessive bearing clearance may be detected and isolated for repair.