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:
Nov. 17, 1987
Filed:
Jul. 31, 1985
Francis R Draper, Buckhurst Hill, GB;
John H Francis, Cheltenham, GB;
Alan P Ogburn, Cirencester, GB;
Lucas Industries public limited company, Birmingham, GB;
Abstract
A fuel pumping apparatus for supplying fuel to an engine includes a pumping plunger reciprocable in a cylinder by a cam having cam lobes. Fuel is displaced during inward movement of the plunger during forward rotation of the engine by the leading flanks of the lobes. A valve can be closed during the inward movement of the plunger to allow fuel flow through an outlet to an engine. The valve is electrically controlled by a control system which receives plunger position signals. These signals are arranged to occur substantially half way along the trailing flanks of the lobes instead of as is more usual at the top dead center positions of the plunger, whereby if the engine is rotating in reverse the valve will be open while the plunger is moved inwardly by the trailing flanks of the lobes.