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. 06, 1980
Filed:
Jul. 31, 1978
Applicant:
Inventor:
Norbert W Overfield, Bloomfield, CT (US);
Assignee:
Stanadyne, Inc., Windsor, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02M / ; F04B / ;
U.S. Cl.
CPC ...
1231 / ; 1231 / ; 417456 ;
Abstract
A diesel fuel injection system having a positive displacement fuel delivery valve with a valve piston with a conventional passage for delivering fuel to injection nozzles and a second more restricted passage at an intermediate axial position of the valve piston for delivering such fuel at lower pumping rates, such as during low speed engine cranking, so that the valve piston is displaced a lesser amount at lower pumping rates and thereby increase the downstream residual fuel pressure when the pumping rate is lower.