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. 01, 1979
Filed:
Nov. 04, 1975
Raymond D Gilbert, Springfield, VA (US);
Other;
Abstract
When individual cylinders of an internal combustion engine are disengaged from their power-consuming, power-producing role, engine efficiency at small to medium engine loads is improved significantly. This improvement is measured in enhanced fuel economy and reduced air pollutants from the engine's remaining active cylinders. Cylinders change from active to an inactive role as typical push rods and rocker arms of the valve trains are replaced with mechanisms which can hold selected intake valves closed and companion exhaust valves open continously. Convertible valve trains change the power characteristics of cylinders in response to the remote operator's sensed conditions of load changes, special desired engine performance and desired fuel conservation.