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:
Jul. 21, 1987
Filed:
Nov. 21, 1985
Bruno Schukoff, Graz, AT;
Abstract
Devices for dividing the process of fuel injection into two phases, i.e., pre-injection and main injection, with a pressure relief body opening up an expansion space when the fuel injection pump has reached a given level of pressure, are known to be provided with a by-pass line which can shut off by a spring-loaded slide valve. A simpler design of such a pressure relief system is achieved by having the by-pass line lead from the expansion space to a by-pass opening which is located in the cylinder wall of the pressure chamber of the pump and is intermittently covered by the pump plunger, and by making this opening cooperate with control edges on the pump plunger, leaving it uncovered in the injection-free state.