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. 05, 1992
Filed:
Mar. 04, 1991
Applicant:
Inventors:
Assignees:
Dr. Ing. h.c.F. Porsche AG, , DE;
Hydraulik-Ring GmbH, , DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L / ; F01L / ;
U.S. Cl.
CPC ...
123 9015 ; 123 9017 ; 123 9031 ; 474110 ; 474111 ;
Abstract
An arrangement and method for the hydraulic tensioning and adjusting of a camshaft chain drive has a chain which winds around both camshafts. Together with its tensioning arrangement, the chain is shifted into its transverse direction. The load end of the chain is thus lengthened, and the loose end of the chain is shortened, or vice versa. Engine oil can be used as the hydraulic fluid. The fluid pressure rises with the rotational engine speed and is used either directly or by way of a control slide valve for adjustment of the tensioning arrangement.